iankelling.org Git - distro-setup/blob - brc

   1 #!/bin/bash
   2 # Copyright (C) 2019 Ian Kelling
   3 # SPDX-License-Identifier: AGPL-3.0-or-later
   4 # this gets sourced. shebang is just for file mode detection
   5
   6 # Use source ~/.bashrc instead of doing bash -l when running a script
   7 # so this can set extdebug and avoid the bash debugger.
   8
   9
  10 if [[ -s /a/bin/errhandle/err ]]; then
  11   # shellcheck source=/a/bin/errhandle/err
  12   source /a/bin/errhandle/err
  13   # wtf, shellcheck doesn't allow disabling warnings in elifs
  14 else
  15   # bleh shellcheck can't handle disabling in an elif, so nesting this if.
  16   # shellcheck disable=SC2154 # set in .bashrc
  17   if [[ -s $bashrc_dir/err ]]; then
  18     # shellcheck source=/a/bin/errhandle/err
  19     source $bashrc_dir/err
  20   fi
  21 fi
  22
  23 # In t8, it runs clear_console for login shells by default. I don't want
  24 # my console cleared. And linux ttys get cleared without this.
  25 if shopt login_shell >/dev/null && [[ -e ~/.bash_logout ]]; then
  26   rm ~/.bash_logout
  27 fi
  28
  29 # if [[ -s /usr/share/bash-completion/completions/git ]]; then
  30 #   source /usr/share/bash-completion/completions/git
  31 # fi
  32 # if [[ -s /usr/share/bash-completion/completions/gitk ]]; then
  33 #   source /usr/share/bash-completion/completions/gitk
  34 # fi
  35
  36 # for testing error catching:
  37 # t2() {
  38 #   echo t2
  39 #   grep sdf sdfd
  40 #   echo wtf
  41 # }
  42 # t1() {
  43 #   echo t1
  44 #   t2 a b c
  45 # }
  46
  47 # * settings
  48
  49 CDPATH=.
  50
  51
  52 # remove all aliases. aliases provided by the system tend to get in the way,
  53 # for example, error happens if I try to define a function the same name as an alias
  54 unalias -a
  55
  56 # remove gnome keyring warning messages
  57 # there is probably a more proper way, but I didnt find any easily on google
  58 # now using xfce+xmonad instead of vanilla xmonad, so disabling this
  59 #unset GNOME_KEYRING_CONTROL
  60
  61 # use extra globing features.
  62 shopt -s extglob
  63 # include .files when globbing, but ignore files name . and ..
  64 # setting this also sets dotglob.
  65 export GLOBIGNORE="*/.:*/.."
  66
  67 # Useful info. see man bash.
  68 PS4='$LINENO+ '
  69
  70
  71 # broken with bash_completion package. Saw a bug for this once. dont anymore.
  72 # still broken in wheezy
  73 # still buggered in latest stable from the web, version 2.1
  74 # perhaps its fixed in newer git version, which fails to make for me
  75 # this note is from 6-2014.
  76 # still broken in flidas.
  77 #shopt -s nullglob
  78
  79 # make tab on an empty line do nothing
  80 shopt -s no_empty_cmd_completion
  81
  82 # fix spelling errors for cd, only in interactive shell
  83 shopt -s cdspell
  84 # append history instead of overwritting it
  85 shopt -s histappend
  86 # for compatibility, per gentoo/debian bashrc
  87 shopt -s checkwinsize
  88 # attempt to save multiline single commands as single history entries.
  89 shopt -s cmdhist
  90 # enable **
  91 shopt -s globstar
  92
  93
  94 # inside emacs fixes
  95 if [[ $LC_INSIDE_EMACS ]]; then
  96   # EMACS is used by bash on startup, but we dont need it anymore.
  97   # plus I hit a bug in a makefile which inherited it
  98   unset EMACS
  99   export LC_INSIDE_EMACS
 100   export PAGER=cat
 101   export MANPAGER=cat
 102   # scp completion does not work, but this doesnt fix it. todo, figure this out
 103   #complete -r scp &> /dev/null
 104   # todo, remote file completion fails, figure out how to turn it off
 105   export NODE_DISABLE_COLORS=1
 106   # This gets rid of ugly terminal escape chars in node repl
 107   # sometime, Id like to have completion working in emacs shell for node
 108   # the offending chars can be found in lib/readline.js,
 109   # things that do like:
 110   # stream.write('\x1b[' + (x + 1) + 'G');
 111   # We can remove them and keep readline, for example by doing this
 112   # to start a repl:
 113   #!/usr/bin/env nodejs
 114   # var readline = require('readline');
 115   # readline.cursorTo = function(a,b,c) {};
 116   # readline.clearScreenDown = function(a) {};
 117   # const repl = require('repl');
 118   # var replServer = repl.start('');
 119   #
 120   # no prompt, or else readline complete seems to be confused, based
 121   # on our column being different? node probably needs to send
 122   # different kind of escape sequence that is not ugly. Anyways,
 123   # completion doesnt work yet even with the ugly prompt, so whatever
 124   #
 125   export NODE_NO_READLINE=1
 126
 127 fi
 128
 129 export SSH_CONFIG_FILE_OVERRIDE=/root/.ssh/confighome
 130
 131 # emacs has a different default search path than the info command. This
 132 # adds the info defaults to emacs, but not the reverse, because I dun
 133 # care much about the cli. The search path is only on the cli if you run
 134 # "info xxx", or in emacs if you run '(info xxx)', so not that
 135 # important, but might as well fix it.
 136
 137 # info info says this path is what was compiled, and its not documented
 138 # anywhere. Through source grepping, i found it in filesys.h of the info
 139 # source in trisquel flidas.
 140 #
 141 # Traling : means for emacs to add its own stuff on to the end.
 142
 143 export INFOPATH=$PATH:/usr/local/info:/usr/info:/usr/local/lib/info:/usr/lib/info:/usr/local/gnu/info:/usr/local/gnu/lib/info:/usr/gnu/info:/usr/gnu/lib/info:/opt/gnu/info:/usr/share/info:/usr/share/lib/info:/usr/local/share/info:/usr/local/share/lib/info:/usr/gnu/lib/emacs/info:/usr/local/gnu/lib/emacs/info:/usr/local/lib/emacs/info:/usr/local/emacs/info:.:
 144
 145 # for openwrt system that has no stty, this is easier than
 146 # guarding every time i use it.
 147 if ! type -p stty >/dev/null; then
 148   stty() { :; }
 149 fi
 150
 151
 152 use_color=false
 153 if [[ $- == *i* ]]; then
 154   # for readline-complete.el
 155   if [[ $LC_INSIDE_EMACS ]]; then
 156     # all for readline-complete.el
 157     stty echo
 158     bind 'set horizontal-scroll-mode on'
 159     bind 'set print-completions-horizontally on'
 160     bind '"\C-i": self-insert'
 161   else
 162
 163
 164     if [[ $TERM != dumb ]] && test -t 1; then
 165       use_color=true
 166     fi
 167
 168     if [[ $KONSOLE_PROFILE_NAME ]]; then
 169       TERM=xterm-256color
 170     fi
 171
 172     if [[ $TERM == alacritty && ! -e /usr/share/terminfo/a/alacritty ]]; then
 173       # todo: we should try installing the alacritty terminfo if it is not found
 174       # https://github.com/alacritty/alacritty/issues/2838
 175       TERM=xterm-256color
 176     fi
 177
 178     # copying from the alacritty example above,
 179     if [[ $TERM == xterm-kitty ]]; then
 180       if [[ ! -e /usr/share/terminfo/x/xterm-kitty ]]; then
 181         TERM=xterm-256color
 182       else
 183         if [[ -e /a/opt/kitty/shell-integration/bash/kitty.bash ]]; then
 184           KITTY_SHELL_INTEGRATION=t
 185           source /a/opt/kitty/shell-integration/bash/kitty.bash
 186         fi
 187       fi
 188     fi
 189
 190     # todo: not sure this works in sakura
 191     #stty werase undef
 192     #bind "\C-w": kill-region
 193     # sakura == xterm-256color
 194     # konsole == xterm
 195     if [[ $TERM != xterm-kitty && $TERM == xterm* ]]; then
 196       # control + arrow keys. for other terminals, see http://unix.stackexchange.com/questions/10806/how-to-change-previous-next-word-shortcut-in-bash
 197       bind '"\e[1;5C": shell-forward-word' 2>/dev/null
 198       bind '"\e[1;5D": shell-backward-word' 2>/dev/null
 199     else
 200       # make ctrl-backspace work. for konsole, i fixed it through
 201       # /home/iank/.local/share/konsole/default.keytab
 202       stty werase ^h
 203       bind '"\eOc": shell-forward-word'
 204       bind '"\eOd": shell-backward-word'
 205     fi
 206     # i cant remember why i did this, probably to free up some keys to bind
 207     # to other things in bash.
 208     # other than C-c and C-z, the rest defined by stty -a are, at least in
 209     # gnome-terminal, overridden by bash, or disabled by the system
 210     stty  lnext undef stop undef start undef
 211   fi
 212
 213 fi
 214
 215 case $TERM in
 216   # fixup broken backspace in chroots
 217   xterm-kitty|alacritty)
 218     chroot() {
 219       TERM=xterm-256color command chroot "$@"
 220     }
 221     ;;
 222 esac
 223
 224 export BC_LINE_LENGTH=0
 225
 226 # ansible option
 227 export PROFILE_TASKS_TASK_OUTPUT_LIMIT=100
 228
 229 # note, if I use a machine I dont want files readable by all users, set
 230 # umask 077  # If fewer than 4 digits are entered, leading zeros are assumed
 231
 232 # i for insensitive. the rest from
 233 # X means dont remove the current screenworth of output upon exit
 234 # R means to show colors n things
 235 # a useful flag is -F aka --quit-if-one-screen
 236 export LESS=RXij12
 237 export SYSTEMD_LESS=$LESS
 238
 239 export NNN_COLORS=2136
 240
 241 export SL_FILES_DIR=/b/ds/sl/.iank
 242 export SL_INFO_DIR=/p/sshinfo
 243
 244
 245 ### begin pyenv ###
 246
 247 # this is adapted from things printed to term after install
 248 # pyenv. commented for now since I'm not actually using pyenv.
 249
 250 # export PYENV_ROOT="$HOME/.pyenv"
 251 # command -v pyenv &>/dev/null || export PATH="$PYENV_ROOT/bin:$PATH"
 252 # command -v pyenv &>/dev/null && eval "$(pyenv init -)"
 253
 254
 255 # output showed this example for pyenv-virtualenv, which i have no idea
 256 # what it is, but leaving it as a comment in case I end up doing python
 257 # dev.
 258
 259 #eval "$(pyenv virtualenv-init -)"
 260 ### end begin pyenv ###
 261
 262
 263
 264 # * include files
 265
 266 if [[ -s $bashrc_dir/path-add-function ]]; then
 267   source $bashrc_dir/path-add-function
 268   if [[ $SSH_CLIENT ]]; then
 269     if grep -qF /home/iank/.iank/e/e /etc/exports &>/dev/null; then
 270       export EMACSDIR=/home/iank/.iank/e/e
 271     fi
 272     path-add $bashrc_dir
 273   fi
 274 fi
 275
 276 # if someone exported $SOE (stop on error), catch errors.
 277 #
 278 # Note, on debian this results in the following warning when in ssh,
 279 # hich I haven't figured out how to fix. It doesn't happen if we source
 280 # after the shell has started
 281 #
 282 # bash: /usr/share/bashdb/bashdb-main.inc: No such file or directory
 283 # bash: warning: cannot start debugger; debugging mode disabled
 284 if [[ $SOE ]]; then
 285   if [[ -e /a/bin/errhandle/err ]]; then
 286     source /a/bin/errhandle/err
 287   fi
 288 fi
 289
 290
 291 mysrc() {
 292   local path dir file
 293   path=$1
 294   dir=${path%/*}
 295   file=${path##*/}
 296   if [[ -s $path ]]; then
 297     # shellcheck disable=SC1090 # this is dynamic, shellcheck can't follow it.
 298     source $path
 299   elif [[ -s $bashrc_dir/$file ]]; then
 300     # shellcheck disable=SC1090 # this is dynamic, shellcheck can't follow it.
 301     source $bashrc_dir/$file
 302   fi
 303 }
 304
 305
 306 mysrc /a/bin/small-misc-bash/ll-function
 307 mysrc /a/bin/distro-functions/src/package-manager-abstractions
 308
 309 # things to remember:
 310 # ALT-C - cd into the selected directory
 311 # CTRL-T - Paste the selected file path into the command line
 312 #
 313 # good guide to some of its basic features is the readme file
 314 # https://github.com/junegunn/fzf
 315
 316 # if [[ -s /usr/share/doc/fzf/examples/key-bindings.bash ]]; then
 317 #   source /usr/share/doc/fzf/examples/key-bindings.bash
 318 # fi
 319
 320 # * functions
 321
 322
 323 # temporary functions
 324 y() {
 325   m "${@//spring/fall}"
 326 }
 327 h() {
 328   e "${@//spring/fall}"
 329 }
 330
 331
 332 ### begin FSF section ###
 333
 334 # Comments before functions are meant to be good useful
 335 # documentation. If they fail at that, please improve them or send Ian a
 336 # note.
 337
 338 ## copy bash completion
 339 #
 340 # It copies how the bash completion works from one command to other
 341 # commands. Generally just use within a .bashrc.
 342 #
 343 # Usage: ORIGINAL_COMMAND TARGET_COMMAND...
 344 #
 345 ccomp() {
 346   local c src
 347   src=$1
 348   shift
 349   if ! c=$(complete -p $src 2>/dev/null); then
 350     _completion_loader $src &>/dev/null ||:
 351     c=$(complete -p $src 2>/dev/null) || return 0
 352   fi
 353   # remove $src( .*|$)
 354   c=${c% "$src"}
 355   c=${c%% "$src" *}
 356   eval $c $*
 357 }
 358
 359 ## BEGIN functions to change directory better than cd ##
 360 #
 361 # The functions:
 362 #
 363 # c: acts like cd, but stores directory history: you could alias to cd if you wanted.
 364 # b: go back
 365 # f: go forward
 366 # cl: list recent directories and optionally choose one.
 367 #
 368 # Finer details you may want to skip:
 369 #
 370 # bl: print the list of back and forward directories.
 371 #
 372 # We keep 2 stacks of directories, forward and back. Unlike with a web
 373 # browser, the forward stack is not erased when going somewhere new.
 374 #
 375 # Recent directories are stored in ~/.cdirs.
 376 #
 377 declare -a _dir_forward _dir_back
 378 c() {
 379   # normally, the top of _dir_back is our current dir. if it isn't,
 380   # put it on there, except we don't want to do that when we
 381   # just launched a shell
 382   if [[ $OLDPWD ]]; then
 383     if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 384       _dir_back+=("$PWD")
 385     fi
 386   fi
 387   command cd "$@"
 388   if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 389     _dir_back+=("$PWD")
 390   fi
 391   echo "$PWD" >> ~/.cdirs
 392 }
 393 ccomp cd c
 394
 395 # back
 396 b() {
 397   local top_back
 398   if (( ${#_dir_back[@]} == 0 )); then
 399     echo "nothing left to go back to" >&2
 400     return 0
 401   fi
 402   top_back="${_dir_back[-1]}"
 403
 404   if [[ $top_back == "$PWD" ]] && (( ${#_dir_back[@]} == 1 )); then
 405     echo "already on last back entry" >&2
 406     return 0
 407   fi
 408
 409
 410   if [[ $top_back == "$PWD" ]]; then
 411     # add to dirf if not already there
 412     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$top_back" ]]; then
 413       _dir_forward+=("$top_back")
 414     fi
 415     unset "_dir_back[-1]"
 416     command cd "${_dir_back[-1]}"
 417   else
 418     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$PWD" ]]; then
 419       _dir_forward+=("$PWD")
 420     fi
 421     command cd "$top_back"
 422   fi
 423
 424   # Interesting feature, not sure I want it.
 425   # give us a peek at what is next in the list
 426   # if (( ${#_dir_back[@]} >= 2 )); then
 427   #   printf "%s\n" "${_dir_back[-2]}"
 428   # fi
 429   #
 430
 431   # c/b/f Implementation notes:
 432   #
 433   # The top of the back is $PWD
 434   # as long as the last directory change was due to c,b,or cl.
 435   #
 436   # Example of stack changes:
 437   #
 438   # a b c (d)
 439   ## back
 440   # a b (c)
 441   # d
 442   #back
 443   #a (b)
 444   #d c
 445   #back
 446   #(a)
 447   #d c b
 448   #forward
 449   #a (b)
 450   #d c
 451   #
 452   # a b c
 453   ## back
 454   # a b
 455   # (c)
 456   ## forward
 457
 458 }
 459 # forward
 460 f() {
 461   local top_forward
 462   if (( ${#_dir_forward[@]} == 0 )); then
 463     echo "no forward dir left" >&2
 464     return 0
 465   fi
 466   top_forward="${_dir_forward[-1]}"
 467   unset "_dir_forward[-1]"
 468   c "$top_forward"
 469
 470   # give us a peek at what is next in the list
 471   # if (( ${#_dir_forward[@]} )); then
 472   #   printf "%s\n" "${_dir_forward[-1]}"
 473   # fi
 474 }
 475 # cl = cd list
 476 cl() {
 477   local i line input start
 478   local -A buttondirs alines
 479   local -a buttons dirs lines
 480   buttons=( {a..z} {2..9} )
 481   if [[ ! -s ~/.cdirs ]]; then
 482     echo nothing in ~/.cdirs
 483     return 0
 484   fi
 485
 486   i=0
 487
 488   mapfile -t lines <~/.cdirs
 489   start=$(( ${#lines[@]} - 1 ))
 490
 491   # we have ~33 buttons as of this writing, so lets
 492   # prune down the history every once in a while.
 493   if (( start > 500 )); then
 494     tac ~/.cdirs | awk '!seen[$0]++' | head -n 200 | tac | sponge ~/.cdirs || [[ $? == 141 ]]
 495   fi
 496
 497   for (( j=start; j >= 0; j-- )); do
 498     line="${lines[$j]}"
 499     if [[ ! $line || ${alines[$line]} || ! -d "$line" || $line == "$PWD" || line == "$HOME"  ]]; then
 500       continue
 501     fi
 502     alines[$line]=t
 503     buttondirs[${buttons[i]}]="$line"
 504     printf "%s %s\n" ${buttons[i]} "$line"
 505     # the LINES bit is for when we have a short terminal, just dont print all
 506     # the directories. alternative would be to do something like less the list.
 507     if (( i == ${#buttons[@]} - 1 )) || { [[ $LINES ]] && (( i == LINES - 3 )); }; then
 508       break
 509     fi
 510     i=$(( i + 1 ))
 511   done
 512
 513   if (( i == 0 )); then
 514     echo "no dirs in ~/.cdirs"
 515     return 0
 516   fi
 517   read -r -N 1 input
 518   if [[ $input != $'\n' ]]; then
 519     c "${buttondirs[$input]}"
 520   fi
 521 }
 522 # bl = back list. lists the back and forward directories. i tend to
 523 # forget this exists and use cl instead.
 524 bl() {
 525   local start i j max
 526   max=10
 527   start=$(( ${#_dir_back[@]} - 1 ))
 528
 529   # cleanup possible repeating of pwd
 530   if (( start >= 0 )) && [[ ${_dir_back[$start]} == "$PWD" ]]; then
 531     start=$(( start - 1 ))
 532   fi
 533   j=1
 534   if (( start >= 0 )); then
 535     for (( i=start; i >= 0 ; i-- )); do
 536       printf "%s %s\n" $j ${_dir_back[i]}
 537       j=$(( j + 1 ))
 538       if (( j >= max )); then
 539         break
 540       fi
 541     done
 542   fi
 543
 544   max=10
 545   start=$(( ${#_dir_forward[@]} - 1 ))
 546
 547   # cleanup possible repeating of pwd
 548   if (( start >= 0 )) && [[ ${_dir_forward[$start]} == "$PWD" ]]; then
 549     start=$(( start - 1 ))
 550   fi
 551   if (( start < 0 )); then
 552     return 0
 553   fi
 554   echo --
 555   j=1
 556   for (( i=start; i >= 0 ; i-- )); do
 557     printf "%s %s\n" $j ${_dir_forward[i]}
 558     j=$(( j + 1 ))
 559     if (( j >= max )); then
 560       break
 561     fi
 562   done
 563 }
 564 ## END functions to change directory better than cd ##
 565
 566 # pee do. run args as a command with output copied to syslog.
 567 #
 568 # Usage: pd [-t TAG] COMMAND...
 569 #
 570 # -t TAG Override the tag in the syslog. The default is COMMAND with
 571 #        any path part is removed, eg. for /bin/cat the tag is cat.
 572 #
 573 # You can view the log via "journalctl -t TAG"
 574 pd() {
 575   local tag ret
 576   ret=0
 577   tag=${1##*/}
 578   case $1 in
 579     -t) tag="$2"; shift 2 ;;
 580   esac
 581   echo "PWD=$PWD command: $*" | logger -t $tag
 582   "$@" |& pee cat "logger -t $tag" || ret=$?
 583   echo "exited with status=$ret" | pee cat "logger -t $tag"
 584   # this avoids any err-catch
 585   (( ret == 0 )) || return $ret
 586 }
 587 ccomp time pd
 588
 589 # jdo = journal do. Run command as transient systemd service, tailing
 590 # its output in the journal until it completes.
 591 #
 592 # Usage: jdo COMMAND...
 593 #
 594 # Compared to pd: commands recognize this is a non-interactive shell.
 595 # The service is unaffected if our ssh connection dies, no need to run
 596 # in screen or tmux.
 597 #
 598 # Note: The last few lines of any existing entries for a unit by that
 599 # name will be output first, and there will be a few second delay at the
 600 # start of the command, and a second or so at the end.
 601 #
 602 # Note: Functions and aliases obviously won't work, we resolve the
 603 # command to a file.
 604 #
 605 # Note: requires running as root.
 606 jdo() {
 607   local cmd cmd_name jr_pid ret
 608   ret=0
 609   cmd="$1"
 610   shift
 611   if [[ $EUID != 0 ]]; then
 612     echo "jdo: error: rerun as root"
 613     return 1
 614   fi
 615   cmd_name=${cmd##*/}
 616   if [[ $cmd != /* ]]; then
 617     cmd=$(type -P "$cmd")
 618   fi
 619   # -q = quiet
 620   journalctl -qn2 -f -u "$cmd_name" &
 621   # Trial and error of time needed to avoid missing initial lines.
 622   # .5 was not reliable. 1 was not reliable. 2 was not reliable
 623   sleep 4
 624   jr_pid=$!
 625   systemd-run --unit "$cmd_name" --wait --collect "$cmd" "$@" || ret=$?
 626   # The sleep lets the journal output its last line
 627   # before the prompt comes up.
 628   sleep .5
 629   kill $jr_pid &>/dev/null ||:
 630   unset jr_pid
 631   fg &>/dev/null ||:
 632   # this avoids any err-catch
 633   (( ret == 0 )) || return $ret
 634 }
 635 ccomp time jdo
 636 #### end fsf section
 637
 638
 639 ..() { c ..; }
 640 ...() { c ../..; }
 641 ....() { c ../../..; }
 642 .....() { c ../../../..; }
 643 ......() { c ../../../../..; }
 644
 645 chere() {
 646   local f path
 647   for f; do
 648     path=$(readlink -e "$f")
 649     echo "cat >$path <<'EOF'"
 650     cat "$f"
 651     echo EOF
 652   done
 653 }
 654
 655
 656 # file cut copy and paste, like the text buffers :)
 657 # I havnt tested these.
 658 _fbufferinit() { # internal use
 659   ! [[ $my_f_tempdir ]] && my_f_tempdir="$(mktemp -d)"
 660   rm -rf "${my_f_tempdir:?}"/*
 661 }
 662 fcp() { # file cp
 663   _fbufferinit
 664   cp "$@" "$my_f_tempdir"/
 665 }
 666 fct() { # file cut
 667   _fbufferinit
 668   mv "$@" "$my_f_tempdir"/
 669 }
 670 fpst() { # file paste
 671   [[ $2 ]] && { echo too many arguments; return 1; }
 672   target=${1:-.}
 673   cp "$my_f_tempdir"/* "$target"
 674 }
 675
 676 _khfix_common() {
 677   local host ip port file key
 678   read -r host ip port < <(timeout -s 9 2 ssh -oBatchMode=yes -oControlMaster=no -oControlPath=/ -v $1 |& sed -rn "s/debug1: Connecting to ([^ ]+) \[([^\]*)] port ([0-9]+).*/\1 \2 \3/p" ||: )
 679   file=$(readlink -f ~/.ssh/known_hosts)
 680   if [[ ! $ip ]]; then
 681     echo "khfix: ssh failed"
 682     return 1
 683   fi
 684   if [[ $port != 22 ]]; then
 685     ip_entry="[$ip]:$port"
 686     host_entry="[$host]:$port"
 687   else
 688     ip_entry=$ip
 689     host_entry=$host
 690   fi
 691   if [[ $host != "$ip" ]]; then
 692     key=$(ssh-keygen -F "$host_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 693     if [[ $key ]]; then
 694       grep -Fv "$key" "$file" | sponge "$file"
 695     fi
 696   fi
 697   key=$(ssh-keygen -F "$ip_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 698   if [[ $key ]]; then
 699     grep -Fv "$key" "$file" | sponge "$file"
 700   fi
 701   ll ~/.ssh/known_hosts
 702   rootsshsync
 703 }
 704 khfix() { # known hosts fix
 705   _khfix_common "$@" || return 1
 706   ssh $1 :
 707 }
 708 khcopy() {
 709   _khfix_common "$@"
 710   ssh-copy-id $1
 711 }
 712
 713 a() {
 714   local x
 715   x=$(readlink -nf "${1:-$PWD}")
 716   # yes, its kinda dumb that xclip/xsel cant do this in one invocation
 717   echo -n "$x" | xclip -selection clipboard
 718   echo -n "$x" | xclip
 719 }
 720
 721 # a1 = awk {print $1}
 722 for field in {1..20}; do
 723   eval a$field"() { awk '{print \$$field}'; }"
 724 done
 725 # h1 = head -n1
 726 for num in {1..9}; do
 727   eval h$num"() { head -n$num || [[ \$? == 141 ]]; }"
 728 done
 729
 730
 731 hexipv4() {
 732   # shellcheck disable=SC2046 disable=SC2001 disable=SC2183 # hacks, expected
 733   printf '%d.%d.%d.%d\n' $(echo $1 | sed 's/../0x& /g')
 734 }
 735
 736 vp9() {
 737   local f out outdir in fname origdir skip1
 738   origdir="$PWD"
 739   outdir=vp9
 740   skip1=false
 741   while [[ $1 == -* ]]; do
 742     case $1 in
 743       # if we got interrupted after 1st phase
 744       -2)
 745         skip1=true
 746         shift
 747         ;;
 748       --out)
 749         outdir=$2
 750         shift 2
 751         ;;
 752     esac
 753   done
 754   m mkdir -p $outdir
 755   # first pass only uses about 1 cpu, so run in parallel
 756   for f; do
 757     {
 758       fname="${f##*/f}"
 759       if [[ $f == /* ]]; then
 760         in="$f"
 761       else
 762         in=$origdir/$f
 763       fi
 764       out="$origdir/$outdir/$fname"
 765       mkdir -p /tmp/vp9/$fname
 766       cd /tmp/vp9/$fname
 767       if ! $skip1 && [[ ! -s ffmpeg2pass-0.log ]]; then
 768         # -nostdin or else wait causes ffmpeg to go into stopped state. dunno why, random stackoverflow answer.
 769         m ffmpeg -nostdin -hide_banner -loglevel error -i $in -g 192 -vcodec libvpx-vp9 -vf scale=-1:720 -max_muxing_queue_size 9999  -b:v 750K -pass 1 -an -f null /dev/null
 770       fi
 771       if [[ -e $out ]]; then rm -f $out; fi
 772       m ffmpeg -nostdin -hide_banner -loglevel error -y -i $in -g 192 -vcodec libvpx-vp9 -tile-rows 2 -vf scale=-1:720 -max_muxing_queue_size 9999 -b:v 750K -pass 2 -c:a libvorbis -qscale:a 5 $out
 773     } &
 774   done
 775   wait -f
 776   cd "$origdir"
 777 }
 778
 779 utcl() { # utc 24 hour time to local hour 24 hour time
 780   echo "print( ($1  $(date +%z | sed -r 's/..$//;s/^(-?)0*/\1/')) % 24)"|python3
 781 }
 782
 783 bwm() {
 784   s bwm-ng -T avg -d
 785 }
 786
 787
 788 # for running in a fai rescue. iank specific.
 789 kdrescue() {
 790   d=vgata-Samsung_SSD_850_EVO_2TB_S2RLNX0J502123D
 791   for f in $d vgata-Samsung_SSD_870_QVO_8TB_S5VUNG0N900656V; do
 792     cryptsetup luksOpen --key-file /p /dev/$f/root crypt-$f-root
 793     cryptsetup luksOpen --key-file /p /dev/$f/o crypt-$f-o
 794   done
 795   mount -o subvol=root_trisquelaramo /dev/mapper/crypt-$d-root /mnt
 796   mount -o subvol=a /dev/mapper/crypt-$d-root /mnt/a
 797   mount -o subvol=o /dev/mapper/crypt-$d-o /mnt/o
 798   mount -o subvol=boot_trisquelaramo /dev/sda2 /mnt/boot
 799   cd /mnt
 800   chrbind
 801 }
 802
 803
 804
 805
 806 c4() { c /var/log/exim4; }
 807
 808 caa() { git commit --amend --no-edit -a; }
 809
 810 cf() {
 811   for f; do
 812     hr
 813     echo "$f"
 814     hr
 815     cat "$f"
 816   done
 817 }
 818 caf() {
 819
 820   local file
 821 find -L "$@" -type f -not \( -name .svn -prune -o -name .git -prune \
 822        -o -name .hg -prune -o -name .editor-backups -prune \
 823        -o -name .undo-tree-history -prune \) -printf '%h\0%d\0%p\n' | sort -t '\0' -n \
 824   | awk -F '\0' '{print $3}' 2>/dev/null | while read -r file; do
 825     hr
 826     printf "%s\n" "$file"
 827     hr
 828     cat "$file"
 829 done
 830 }
 831 ccomp cat cf caf
 832
 833 calc() { echo "scale=3; $*" | bc -l; }
 834 # no having to type quotes, but also no command history:
 835 clc() {
 836   local x
 837   read -r x
 838   echo "scale=3; $x" | bc -l
 839 }
 840
 841 cx() {
 842   chmod +X "$@"
 843   }
 844
 845 cam() {
 846   git commit -am "$*"
 847 }
 848
 849 ccat () { # config cat. see a config without extra lines.
 850   sed -r '/^[[:space:]]*([;#]|--|\/\/|$)/d' "$@"
 851 }
 852 ccomp grep ccat
 853
 854 chrbind() {
 855   local d
 856   # dev/pts needed for pacman signature check
 857   for d in dev proc sys dev/pts; do
 858     [[ -d $d ]]
 859     if ! mountpoint $d &>/dev/null; then
 860       m s mount -o bind /$d $d
 861     fi
 862   done
 863 }
 864 chumount() {
 865   local d
 866   # dev/pts needed for pacman signature check
 867   for d in dev/pts dev proc sys; do
 868     [[ -d $d ]]
 869     if mountpoint $d &>/dev/null; then
 870       m s umount $d
 871     fi
 872   done
 873 }
 874
 875
 876 _cdiff-prep() {
 877   # join options which are continued to multiples lines onto one line
 878   local first=true
 879   while IFS= read -r line; do
 880     # remove leading spaces/tabs. assumes extglob
 881     if [[ $line == "[   ]*" ]]; then
 882       line="${line##+( )}"
 883     fi
 884     if $first; then
 885       pastline="$line"
 886       first=false
 887     elif [[ $line == *=* ]]; then
 888       echo "$pastline" >> "$2"
 889       pastline="$line"
 890     else
 891       pastline="$pastline $line"
 892     fi
 893   done < <(grep -vE '^([ \t]*#|^[ \t]*$)' "$1")
 894   echo "$pastline" >> "$2"
 895 }
 896
 897 cdiff() {
 898   # diff config files,
 899   # setup for format of postfix, eg:
 900   # option = stuff[,]
 901   #    [more stuff]
 902   local pastline unified f1 f2
 903   unified="$(mktemp)"
 904   f1="$(mktemp)"
 905   f2="$(mktemp)"
 906   _cdiff-prep "$1" "$f1"
 907   _cdiff-prep "$2" "$f2"
 908   cat "$f1" "$f2" |  grep -Po '^[^=]+=' | sort | uniq > "$unified"
 909   while IFS= read -r line; do
 910     # the default bright red / blue doesnt work in emacs shell
 911     dwdiff -cblue,red -A best -d "      ," <(grep "^$line" "$f1" || echo ) <(grep "^$line" "$f2" || echo ) | colordiff
 912   done < "$unified"
 913 }
 914
 915
 916 cat-new-files() {
 917   local start=$SECONDS
 918   local dir="$1"
 919   # shellcheck disable=SC2030
 920   inotifywait -m "$dir" -e create -e moved_to | \
 921     while read -r filedir _ file; do
 922       cat "$filedir$file"
 923       hr
 924       calc $((SECONDS - start)) / 60
 925       sleep 5
 926     done
 927
 928 }
 929
 930 chownme() {
 931   s chown -R $USER:$USER "$@"
 932 }
 933
 934 # shellcheck disable=SC2032
 935 chown() {
 936   # makes it so chown -R symlink affects the symlink and its target.
 937   if [[ $1 == -R ]]; then
 938     shift
 939     command chown -h "$@"
 940     command chown -R "$@"
 941   else
 942     command chown "$@"
 943   fi
 944 }
 945
 946 cim() {
 947   git commit -m "$*"
 948 }
 949
 950
 951 d() { builtin bg "$@"; }
 952 ccomp bg d
 953
 954 # f would be more natural, but i already am using it for something
 955 z() { builtin fg "$@"; }
 956 ccomp fg z
 957
 958 x() { builtin kill %%; }
 959
 960 dc() {
 961   diff --strip-trailing-cr -w "$@"   # diff content
 962 }
 963 ccomp diff dc
 964
 965 despace() {
 966   local x y
 967   for x in "$@"; do
 968     y="${x// /_}"
 969     safe_rename "$x" "$y"
 970   done
 971 }
 972
 973 # df progress
 974 # usage: dfp MOUNTPOINT [SECOND_INTERVAL]
 975 # SECOND_INTERVAL defaults to 90
 976 dfp() {
 977   # mp = mountpoint
 978   local a b mp interval
 979   mp=$1
 980   interval=${2:-90}
 981   if [[ ! $mp ]]; then
 982     echo "dfp: error, missing 1st arg" >&2
 983     return 1
 984   fi
 985   while true; do
 986     a=$(df --output=used $mp | tail -n1)
 987     sleep $interval
 988     b=$(df --output=used $mp | tail -n1)
 989     printf "used mib: %'d  mib/min: %s\n" $(( b /1000 )) $(( (b-a) / (interval * 1000 / 60 ) ))
 990   done
 991 }
 992
 993 # get ipv4 ip from HOST. or if it is already a number, return that
 994 hostip() {
 995   local host="$1"
 996   case $host in
 997     [0-9:])
 998       echo "$host"
 999       ;;
1000     *)
1001       getent ahostsv4 "$host" | awk '{ print $1 }' | head -n1
1002       ;;
1003   esac
1004 }
1005
1006 dig() {
1007   command dig +nostats +nocmd "$@"
1008 }
1009 # Output with sections sorted, and removal of query id, so 2 dig outputs can be diffed.
1010 digsort() {
1011   local sec
1012   sec=
1013   dig +nordflag "$@" | sed -r 's/^(;; ->>HEADER<<-.*), id: .*/\1/' | while read -r l; do
1014     if [[ $l == [^\;]* ]]; then
1015       sec+="$l"$'\n'
1016     else
1017       if [[ $sec ]]; then
1018         printf "%s" "$sec" | sort
1019         sec=
1020       fi
1021       printf "%s\n" "$l"
1022     fi
1023   done
1024 }
1025 ccomp dig digsort
1026 # compare digs to the 2 servers
1027 # usage: digdiff @server1 @server2 DIG_ARGS
1028 # note: only the soa master nameserver will respond with
1029 # ra "recursive answer" flag. That difference is meaningless afaik.
1030 digdiff() {
1031   local s1 s2
1032   s1=$1
1033   shift
1034   s2=$1
1035   shift
1036   digsort $s1 "$@" | tee /tmp/digdiff
1037   diff -u /tmp/digdiff <(digsort $s2 "$@")
1038 }
1039
1040 # date in a format i like reading
1041 dt() {
1042   date "+%A, %B %d, %r" "$@"
1043 }
1044 dtr() {
1045   date -R "$@"
1046 }
1047 # date with all digits in a format i like
1048 dtd() {
1049   date +%F_%T% "$@"
1050 }
1051 ccomp date dt dtr dtd
1052
1053 dus() { # du, sorted, default arg of
1054   du -sh ${@:-*} | sort -h
1055 }
1056 ccomp du dus
1057
1058
1059 e() { printf "%s\n" "$*"; }
1060
1061 # echo args
1062 ea() {
1063   if (( ! $# )); then
1064     echo no args
1065   fi
1066   for arg; do
1067     printf "%qEOL\n" "${arg}"
1068     printf "%s" "${arg}" |& hexdump -C
1069   done
1070 }
1071
1072 # echo variables. print var including escapes, etc, like xxd for variable
1073 ev() {
1074   if (( ! $# )); then
1075     echo no args
1076   fi
1077   for arg; do
1078     if [[ -v $arg ]]; then
1079       printf "%qEOL\n" "${!arg}"
1080       printf "%s" "${!arg}" |& hexdump -C
1081     else
1082       echo arg $arg is unset
1083     fi
1084   done
1085 }
1086
1087 ediff() {
1088   [[ ${#@} == 2 ]] || { echo "error: ediff requires 2 arguments"; return 1; }
1089   emacs --eval "(ediff-files \"$1\" \"$2\")"
1090 }
1091
1092 # mail related
1093 # shellcheck disable=SC2120 # we expect to pass arguments in use outside this file
1094 etail() {
1095   ngset
1096   tail -F /var/log/exim4/mainlog /var/log/exim4/*main /var/log/exim4/paniclog /var/log/exim4/*panic -n 200 "$@"
1097   ngreset
1098 }
1099 etailm() {
1100   tail -F /var/log/exim4/mainlog -n 200 "$@"
1101 }
1102 etail2() {
1103   tail -F /var/log/exim4/mymain -n 200 "$@"
1104 }
1105 ccomp tail etail etail2
1106
1107 # ran into this online, trying it out
1108 detach() {
1109   ( "$@" &>/dev/null & disown )
1110 }
1111
1112 showkeys() {
1113   ssh "$@" cat .ssh/authorized_keys{,2}
1114 }
1115
1116
1117 # print exim old pids
1118 eoldpids() {
1119   local configtime pid piduptime now daemonpid
1120   printf -v now '%(%s)T' -1
1121   configtime=$(stat -c%Y /var/lib/exim4/config.autogenerated)
1122   if [[ -s /run/exim4/exim.pid ]]; then
1123     daemonpid=$(cat /run/exim4/exim.pid)
1124   fi
1125   for pid in $(pgrep -f '^/usr/sbin/exim4( |$)'); do
1126     # the daemonpid gets reexeced on HUP (service reloads), keeping its same old timestamp
1127     if [[ $pid == "$daemonpid" ]]; then
1128       continue
1129     fi
1130     piduptime=$(awk -v ticks="$(getconf CLK_TCK)" 'NR==1 { now=$1; next } END { printf "%9.0f\n", now - ($20/ticks) }' /proc/uptime RS=')' /proc/$pid/stat) ||: # sometimes pids disappear pretty fast
1131     if (( configtime > now - piduptime )); then
1132       echo $pid
1133     fi
1134   done
1135 }
1136
1137 # exim tail but only watch lines from new pids
1138 etailnew() {
1139   local pid oldpids
1140   for pid in $(eoldpids); do
1141     oldpids+="$pid|"
1142   done
1143   if [[ $oldpids ]]; then
1144     etail | awk '$3 !~ /^\[('"${oldpids%|}"')\]$/'
1145   else
1146     etail
1147   fi
1148 }
1149 # exim watch as old pids go away
1150 ewatchold() {
1151   local configtime pid piduptime now tmpstr
1152   local -i count
1153   local -a oldpids
1154   count=0
1155   while true; do
1156     tmpstr=$(eoldpids)
1157     mapfile -t oldpids <<<"$tmpstr"
1158     if (( ! ${#oldpids[@]} )); then
1159       return
1160     fi
1161     # print the date every 20 iterations
1162     if (( ! count % 20 )); then
1163       date
1164     fi
1165     count+=1
1166     ps -f -p "${oldpids[*]}"
1167     sleep 1
1168   done
1169 }
1170
1171 eless() {
1172   less /var/log/exim4/mainlog
1173 }
1174 ccomp less eless
1175 eqcat() {
1176   exiqgrep -ir.\* -o 60 | while read -r i; do
1177     hlm exim -Mvc $i
1178     echo
1179     hlm exigrep $i /var/log/exim4/mainlog | cat ||:
1180   done
1181 }
1182 eqrmf() {
1183   # other ways to get the list of message ids:
1184   # exim -bp | awk 'NF == 4 {print $3}'
1185   # # this is slower 160ms, vs 60.
1186   # exipick -i
1187   exiqgrep -ir.\* | xargs exim -Mrm
1188 }
1189
1190 econfdevnew() {
1191   rm -rf /tmp/edev
1192   mkdir -p /tmp/edev/etc
1193   cp -ra /etc/exim4 /tmp/edev/etc
1194   cp -ra /etc/alias* /tmp/edev/etc
1195   find /tmp/edev/etc/exim4 -type f -execdir sed -i "s,/etc/,/tmp/edev/etc/,g" '{}' +
1196   econfdev
1197 }
1198 econfdev() {
1199   update-exim4.conf -d /tmp/edev/etc/exim4 -o /tmp/edev/e.conf
1200 }
1201
1202 # exim grep in
1203 # show important information about incoming mail in the exim log
1204 egrin() {
1205   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p' <${1:-/var/log/exim4/mainlog}
1206 }
1207
1208 # 2nd line is message-id:
1209 egrinid() {
1210   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).* id=([^ ]+) T="(.*)" from (<[^ ]+> .*$)/\1 \5\n \3\n \4/p' <${1:-/var/log/exim4/mainlog}
1211 }
1212 etailin() {
1213   tail -F /var/log/exim4/mainlog | sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p'
1214 }
1215
1216
1217
1218
1219 fa() {
1220   # find array. make an array of file names found by find into $x
1221   # argument: find arguments
1222   # return: find results in an array $x
1223   while read -rd ''; do
1224     x+=("$REPLY");
1225   done < <(find "$@" -print0);
1226 }
1227
1228 faf() { # find all files. use -L to follow symlinks
1229   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1230        -o -name .hg -prune -o -name .editor-backups -prune \
1231        -o -name .undo-tree-history -prune \) -type f 2>/dev/null
1232 }
1233
1234 # usage ffconcat FILES_TO_CONCAT OUTPUT_FILE
1235 ffconcat() {
1236   local tmpf
1237   tmpf=$(mktemp)
1238   printf "file '%s'\n" "$1" >$tmpf
1239   while (( $# > 1 )); do
1240     shift
1241     printf "file '%s'\n" "$1" >>$tmpf
1242   done
1243   # https://trac.ffmpeg.org/wiki/Concatenate
1244   ffmpeg -f concat -safe 0 -i $tmpf -c copy "$1"
1245   rm $tmpf
1246 }
1247 ffremux() {
1248   local tmpf tmpd
1249   if (( $# == 0 )); then
1250     echo ffremux error expected args >&2
1251     return 1
1252   fi
1253   tmpd="$(mktemp -d)"
1254   for f; do
1255     tmpf=$tmpd/"${f##*/}"
1256     ffmpeg -i "$f" -c:v copy -c:a copy $tmpf
1257     cat $tmpf >"$f"
1258   done
1259   rm -r $tmpd
1260 }
1261
1262
1263
1264 # absolute path of file/dir without resolving symlinks.
1265 #
1266 # Most of the time, I want this where I would normally use readlink.
1267 # This is what realpath -s does in most cases, but sometimes it
1268 # actually resolves symlinks, at least when they are in /.
1269 #
1270 # Note, if run on a dir, if the final component is relative, it won't
1271 # resolve that. Use the below fpd for that.
1272 #
1273 # note: we could make a variation of this which
1274 # assigns to a variable name using eval, so that we don't have to do
1275 # x=$(fp somepath), which might save subshell overhead and look nice,
1276 # but I'm not going to bother.
1277 fp() {
1278   local initial_oldpwd initial_pwd dir base
1279   initial_oldpwd="$OLDPWD"
1280   initial_pwd="$PWD"
1281   if [[ $1 == */* ]]; then
1282     dir="${1%/*}"
1283     base="/${1##*/}"
1284     # CDPATH because having it set will cause cd to possibly print output
1285     CDPATH='' cd "$dir"
1286     printf "%s%s\n" "$PWD" "$base"
1287     CDPATH='' cd "$initial_pwd"
1288     OLDPWD="$initial_oldpwd"
1289   else
1290     printf "%s/%s\n" "$PWD" "$1"
1291   fi
1292 }
1293 # full path of directory without resolving symlinks
1294 fpd() {
1295   local initial_oldpwd initial_pwd dir
1296   initial_oldpwd="$OLDPWD"
1297   initial_pwd="$PWD"
1298   dir="$1"
1299   CDPATH='' cd "$dir"
1300   printf "%s%s\n" "$PWD" "$base"
1301   cd "$initial_pwd"
1302   OLDPWD="$initial_oldpwd"
1303 }
1304
1305
1306 # mail related
1307 frozen() {
1308   rm -rf /tmp/frozen
1309   sudo mailq |gr frozen|awk '{print $3}' | while read -r id; do
1310     sudo exim -Mvl $id
1311     echo
1312     sudo exim -Mvh $id
1313     echo
1314     sudo exim -Mvb $id
1315     echo -e '\n\n##############################\n'
1316   done | tee -a /tmp/frozen
1317 }
1318 frozenrm() {
1319   local ids=()
1320   while read -r line; do
1321     printf '%s\n' "$line"
1322     ids+=("$(printf '%s\n' "$line" |gr frozen|awk '{print $3}')")
1323   done < <(s mailq)
1324   echo "sleeping for 2 in case you change your mind"
1325   sleep 2
1326   sudo exim -Mrm "${ids[@]}"
1327 }
1328
1329 funce() {
1330   # like -e for functions. returns on error.
1331   # at the end of the function, disable with:
1332   # trap ERR
1333   trap 'echo "${BASH_COMMAND:+BASH_COMMAND=\"$BASH_COMMAND\" }
1334 ${FUNCNAME:+FUNCNAME=\"$FUNCNAME\" }${LINENO:+LINENO=\"$LINENO\"  }\$?=$?"
1335 trap ERR
1336 return' ERR
1337 }
1338
1339 getdir () {
1340   local help="Usage: getdir [--help] PATH
1341 Output the directory of PATH, or just PATH if it is a directory."
1342   if [[ $1 == --help ]]; then
1343     echo "$help"
1344     return 0
1345   fi
1346   if [[ $# -ne 1 ]]; then
1347     echo "getdir error: expected 1 argument, got $#"
1348     return 1
1349   fi
1350   if [[ -d $1 ]]; then
1351     echo "$1"
1352   else
1353     local dir
1354     dir="$(dirname "$1")"
1355     if [[ -d $dir ]]; then
1356       echo "$dir"
1357     else
1358       echo "getdir error: directory does not exist"
1359       return 1
1360     fi
1361   fi
1362 }
1363
1364 git_empty_branch() { # start an empty git branch. carefull, it deletes untracked files.
1365   [[ $# == 1 ]] || { echo 'need a branch name!'; return 1;}
1366   local root
1367   root=$(gitroot) || return 1 # function to set gitroot
1368   builtin cd "$root"
1369   git symbolic-ref HEAD refs/heads/$1
1370   rm .git/index
1371   git clean -fdx
1372 }
1373
1374 # shellcheck disable=SC2120
1375 gitroot() {
1376   local help="Usage: gitroot [--help]
1377 Print the full path to the root of the current git repo
1378
1379 Handles being within a .git directory, unlike git rev-parse --show-toplevel,
1380 and works in older versions of git which did not have that."
1381   if [[ $1 == --help ]]; then
1382     echo "$help"
1383     return
1384   fi
1385   local p
1386   p=$(git rev-parse --git-dir) || { echo "error: not in a git repo" ; return 1; }
1387   [[ $p != /* ]] && p=$PWD
1388   echo "${p%%/.git}"
1389 }
1390
1391 g() {
1392
1393   local args gdb=false
1394
1395   if [[ $EMACSDIR ]]; then
1396     path-add "$EMACSDIR/lib-src" "$EMACSDIR/src"
1397   fi
1398
1399   if [[ $DISPLAY ]]; then
1400     args=-n
1401   fi
1402
1403   if (( $# == 0 )); then
1404     args+=" -c"
1405   fi
1406   # duplicate -c, but oh well
1407   if ! pgrep -u $EUID emacsclient; then
1408     if (( $# == 0 )) && type -p gdb &>/dev/null; then
1409       gdb=true
1410     else
1411       args+=" -c"
1412     fi
1413   fi
1414   if [[ $EMACSDIR ]]; then
1415
1416     # todo: we don't have to alter HOME since emacs 29+, we can set
1417     # user-emacs-directory with the flag --init-directory
1418
1419     # Alter the path here, otherwise the nfs mount gets triggered on the
1420     # first path lookup when emacs is not being used.
1421     # shellcheck disable=SC2098 disable=SC2097 # false positive
1422     PATH="$EMACSDIR/lib-src:$EMACSDIR/src:$PATH" EHOME=$HOME HOME=$EMACSDIR m emacsclient -a "" $args "$@"
1423   else
1424     if $gdb; then
1425       # due to a bug, we cant debug from the start unless we get a new gdb
1426       # https://sourceware.org/bugzilla/show_bug.cgi?id=24454
1427       # m gdb -ex="set follow-fork-mode child" -ex=r -ex=quit --args emacs --daemon
1428       m emacsclient -a "" $args "$@"
1429       sleep 1
1430       cd "/a/opt/emacs-$(distro-name)$(distro-num)"
1431       s gdb -p "$(pgrep -f 'emacs --daemon')" -ex c
1432       cd -
1433     else
1434       m emacsclient -a "" $args "$@"
1435     fi
1436   fi
1437 }
1438
1439 # force terminal version
1440 gn() {
1441   g -n "$@"
1442 }
1443
1444 gmacs() {
1445   # quit will prompt if the program crashes.
1446   gdb -ex=r -ex=quit --args emacs "$@"; r;
1447 }
1448
1449 gdkill() {
1450   # kill the emacs daemon
1451   pk1 emacs --daemon
1452 }
1453
1454 gr() {
1455   grep -iIP --color=auto "$@" || return $?
1456 }
1457 grr() { # grep recursive
1458   # Don't return 1 on nonmatch because this is meant to be
1459   # interactive, not in a conditional.
1460   if [[ ${#@} == 1 ]]; then
1461     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" . || [[ $? == 1 ]]
1462   else
1463     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" || [[ $? == 1 ]]
1464   fi
1465 }
1466 ccomp grep gr grr
1467
1468 rg() { grr "$@"; }
1469 ccomp grep rg
1470
1471 # recursive everything. search for files/dirs and lines. rs = easy chars to press
1472 re() {
1473   local query
1474   query="$1"
1475   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1476        -o -name .hg -prune -o -name .editor-backups -prune \
1477        -o -name .undo-tree-history -prune \) 2>/dev/null | grep -iP --color=auto "$query"
1478   grr -m 5 "$@"
1479 }
1480
1481 # horizontal row. used to break up output
1482 hr() {
1483   local blocks
1484   # 180 is long enough.
1485   blocks=██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████
1486   printf "%s\n" "$(tput setaf 5 2>/dev/null ||:)${blocks:0:${COLUMNS:-180}}$(tput sgr0 2>/dev/null||:)"
1487 }
1488 # highlight
1489 hl() {
1490   local col input_len=0
1491   for arg; do
1492     input_len=$((input_len + 1 + ${#arg}))
1493   done
1494   col=$((60 - input_len))
1495   printf "\e[1;97;41m%s" "$*"
1496   if (( col > 0 )); then
1497     # shellcheck disable=SC2046 # needed to work as intended. a better way would be like hr above.
1498     printf "\e[1;97;41m \e[0m%.0s" $(eval echo "{1..${col}}")
1499   fi
1500   echo
1501 }
1502 hlm() { hl "$*";  "$@"; }
1503
1504 hrcat() { local f; for f; do [[ -f $f ]] || continue; hr; echo "$f"; cat "$f"; done }
1505
1506
1507 # get latest hub and run it
1508 # main command to use:
1509 # hub pull-request --no-edit
1510 # --no-edit means to use the first commit\'s message as the pull request message.
1511 # If that fails, try doing
1512 # hub pull-request --no-edit -b UPSTREAM_OWNER:branch
1513 # where branch is usually master. it does the pr against your current branch.
1514 #
1515 # On first use, you input username/pass and it gets an oath token so you dont have to repeat
1516 # it\'s at ~/.config/hub
1517 hub() {
1518   local up uptar updir p re
1519   # example https://github.com/github/hub/releases/download/v2.14.2/hub-linux-amd64-2.14.2.tgz
1520   up=$(wget -q -O- https://api.github.com/repos/github/hub/releases/latest | jq -r .assets[].browser_download_url | grep linux-amd64)
1521   re='[[:space:]]'
1522   if [[ ! $up || $up =~ $re ]]; then
1523     echo "failed to get good update url. got: $up"
1524   fi
1525   uptar=${up##*/}
1526   updir=${uptar%.tgz}
1527   if [[ ! -e /a/opt/$updir ]]; then
1528     rm -rf /a/opt/hub-linux-amd64*
1529     wget -P /a/opt $up
1530     tar -C /a/opt -zxf /a/opt/$uptar
1531     rm -f /a/opt/$uptar
1532   fi
1533   if ! which hub &>/dev/null; then
1534     sudo /a/opt/$updir/install
1535   fi
1536
1537   # save token across computers
1538   if [[ ! -L ~/.config/hub ]]; then
1539     if [[ -e ~/.config/hub  ]]; then
1540       mv ~/.config/hub /p/c/subdir_files/.config/
1541     fi
1542     if [[ -e /p/c/subdir_files/.config/hub ]]; then
1543       conflink
1544     fi
1545   fi
1546   command hub "$@"
1547 }
1548
1549 i() { git "$@"; }
1550 ccomp git i
1551
1552 # git status:
1553 # cvs -qn update
1554
1555 # git checkout FILE
1556 # cvs update -C FILE
1557
1558 # git pull
1559 # cvs up[date]
1560
1561 # potentially useful command translation
1562 # https://fling.seas.upenn.edu/~giesen/dynamic/wordpress/equivalent-commands-for-git-svn-and-cvs/
1563
1564 # importing cvs repo into git using git-cvs package:
1565 # /f/www $ /usr/lib/git-core/git-cvsimport -C /f/www-git
1566
1567 ic() {
1568   # fast commit all
1569   git commit -am "$*"
1570 }
1571
1572 ipp() {
1573   git pull
1574   git push
1575 }
1576
1577 ifn() {
1578   local glob
1579   glob="$1"
1580   shift
1581   find -L "$@" -not \( -name .svn -prune -o -name .git -prune \
1582        -o -name .hg -prune -o -name .editor-backups -prune \
1583        -o -name .undo-tree-history -prune \) -iname "*$glob*" 2>/dev/null
1584 }
1585
1586 ifh() {
1587   # insensitive find here. args are combined into the search string.
1588   # -L = follow symlinks
1589   find -L . -not \( -name .svn -prune -o -name .git -prune \
1590        -o -name .hg -prune -o -name .editor-backups -prune \
1591        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1592 }
1593
1594 ifd() {
1595   # insensitive find directory
1596   find -L . -type d -not \( -name .svn -prune -o -name .git -prune \
1597        -o -name .hg -prune -o -name .editor-backups -prune \
1598        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1599 }
1600
1601
1602 ipdrop() {
1603   sudo iptables -A INPUT -s $1 -j DROP
1604 }
1605
1606
1607 istext() {
1608   grep -Il "" "$@" &>/dev/null
1609 }
1610
1611 pst() {
1612   pstree -apnA
1613 }
1614
1615 # journalctl with times in the format the --since= and --until= options accept
1616 jrt() { journalctl -e -n100000 -o short-full "$@"; }
1617 jr() { journalctl -e -n100000 "$@" ; }
1618 jrf() { journalctl -n1000 -f "$@" ; }
1619 jru() {
1620   # the invocation id is "assigned each time the unit changes from an inactive
1621   # state into an activating or active state" man systemd.exec
1622   journalctl -e --no-tail -u exim4 _SYSTEMD_INVOCATION_ID="$(systemctl show -p InvocationID --value $1)"
1623 }
1624 ccomp journalctl jr jrf jru
1625
1626
1627
1628 l() {
1629   if [[ $PWD == /[iap] ]]; then
1630     command ls -A --color=auto -I lost+found "$@"
1631   else
1632     command ls -A --color=auto "$@"
1633   fi
1634 }
1635
1636 lcn() { locate -i "*$**"; }
1637
1638 lg() { LC_COLLATE=C.UTF-8 ll --group-directories-first "$@"; }
1639
1640 lt() { ll -tr "$@"; }
1641
1642 lld() { ll -d "$@"; }
1643
1644 ccomp ls l lg lt lld ll
1645
1646 # low recursively
1647 lowr() {
1648   local f dirs i a
1649   local -a all
1650   for dirs in false true; do
1651     for f; do
1652       if [[ -d $f ]]; then
1653         all=("$f"/**)
1654         # reverse the order to rename the nested dirs first.
1655         # note: 0 element is the dir itself
1656         for ((i=${#all[@]}-1; i>=1; i--)); do
1657           a="${all[i]}"
1658           if $dirs && [[ -d $a ]]; then
1659             # e dirs low "$a" # debug
1660             low "$a"
1661           elif ! $dirs && [[ ! -d $a && -e $a ]]; then
1662             # debug
1663             # e not dirs low "$a" # debug
1664             low "$a"
1665           fi
1666         done
1667       fi
1668       # just rename all the top level args on the second pass
1669       if $dirs; then
1670         # e final dirs low "$f" # debug
1671         low "$f"
1672       fi
1673     done
1674   done
1675 }
1676
1677 low() {  # make filenames lowercase, remove bad chars
1678   local arg new dir f
1679   for arg; do
1680     arg="${arg%%+(/)}" # remove trailing slashes. assumes we have extglob on.
1681     dir="${arg%/*}"
1682     if (( ${#dir} == ${#arg} )); then
1683       dir=.
1684     fi
1685     f="${arg##*/}"
1686     new="${f,,}" # downcase
1687     # shellcheck disable=SC2031 # seems like a shellcheck bug
1688     new="${new//[^a-zA-Z0-9._-]/_}" # sub bad chars
1689     new="${new#"${new%%[[:alnum:]]*}"}" # remove leading/trailing non-alnum
1690     new="${new%"${new##*[[:alnum:]]}"}"
1691     # remove bad underscores, like __ and _._
1692     new=$(echo $new | sed -r 's/__+/_/g;s/_+([.-])|([.-])_+/\1/g')
1693     safe_rename "$dir/$f" "$dir/$new" || return 1
1694   done
1695   return 0
1696 }
1697
1698 lower() { # make first letter of filenames lowercase.
1699   local x
1700   for x in "$@"; do
1701     if [[ ${x::1} == [A-Z] ]]; then
1702       y=$(tr '[:upper:]' '[:lower:]' <<<"${x::1}")"${x:1}"
1703       safe_rename "$x" "$y" || return 1
1704     fi
1705   done
1706 }
1707
1708
1709 k() { # history search
1710   grep -iP --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | tail -n 80 || [[ $? == 1 ]];
1711 }
1712 ks() { # history search with context
1713   # args are an extended regex used by sed
1714   history | sed -nr "h;s/^\s*(\S+\s+){4}//;/$*/{g;p}" | tail -n 80 || [[ $? == 1 ]];
1715 }
1716 ksu() { # history search unique
1717   grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | uniq || [[ $? == 1 ]];
1718 }
1719
1720 # todo: id like to do maybe a daily or hourly cronjob to
1721 # check that my history file size is increasing. Ive had it
1722 # inexplicably truncated in the past.
1723 histrm() {
1724   history -n
1725   HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/'
1726   read -r -p "press anything but contrl-c to delete"
1727   for entry in $(HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/ { print a }' | tac); do
1728     history -d $entry
1729   done
1730   history -w
1731 }
1732
1733 # history without the date
1734 histplain() {
1735   history "$@" | cut -d' ' -f 7-
1736 }
1737
1738 ccomp grep k ks ksu histrm
1739
1740
1741 make-targets() {
1742   # show make targets, via http://stackoverflow.com/questions/3063507/list-goals-targets-in-gnu-make
1743   make -qp | awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ {split($1,A,/ /);for(i in A)print A[i]}'
1744 }
1745
1746 mkc() {
1747   mkdir "$1"
1748   c "$1"
1749 }
1750 ccomp mkdir mkc
1751
1752 mkct() {
1753   mkc "$(mktemp -d)"
1754 }
1755 # mkdir the last arg, cp the rest into it
1756 mkcp() {
1757   mkdir -p "${@: -1}"
1758   cp "${@:1:$#-1}" "${@: -1}"
1759 }
1760 mkmv() {
1761   mkdir -p "${@: -1}"
1762   mv "${@:1:$#-1}" "${@: -1}"
1763 }
1764
1765 mkt() { # mkdir and touch file
1766   local path="$1"
1767   mkdir -p "$(dirname "$path")"
1768   touch "$path"
1769 }
1770
1771 # shellcheck disable=SC2032
1772 mkdir() { command mkdir -p "$@"; }
1773
1774 nags() {
1775   # https://github.com/HenriWahl/Nagstamon/issues/357
1776   if ! pgrep -f /usr/bin/dunst >/dev/null; then
1777     /usr/bin/dunst &
1778   fi
1779   /usr/bin/nagstamon &
1780 }
1781
1782 # profanity screen
1783 profsrc() {
1784   screen -RD -S profanity
1785 }
1786
1787 # i dont want to wait for konsole to exit...
1788 prof() {
1789   command prof &>/dev/null &
1790 }
1791 # self chat
1792 sc() {
1793   while read -r l; do
1794     printf '\033[1A\033[K'; printf "%s\n" "$l"| ts "%F %T" | tee -a /p/self-chat.log
1795   done
1796 }
1797
1798 nmt() {
1799   # cant use s because sudo -i doesnt work for passwordless sudo command
1800   case $EUID in
1801     0)
1802       sudo nmtui-connect "$@"
1803       ;;
1804     *)
1805       nmtui-connect "$@"
1806       ;;
1807   esac
1808 }
1809
1810
1811 ngset() {
1812   if shopt nullglob >/dev/null; then
1813     ngreset=false
1814   else
1815     shopt -s nullglob
1816     ngreset=true
1817   fi
1818 }
1819 ngreset() {
1820   if $ngreset; then
1821     shopt -u nullglob
1822   fi
1823 }
1824
1825 nopanic() {
1826   # shellcheck disable=SC2024
1827   ngset
1828   for f in /var/log/exim4/paniclog /var/log/exim4/*panic; do
1829     base=${f##*/}
1830     if [[ -s $f ]]; then
1831       echo ================== $f =============
1832       s tee -a /var/log/exim4/$base-archive <$f
1833       s truncate -s0 $f
1834     fi
1835   done
1836   ngreset
1837 }
1838
1839
1840 ping() { command ping -O "$@"; }
1841 p8() { ping "$@" 8.8.8.8; }
1842 p6() { ping6 "$@" 2001:4860:4860::8888; }
1843
1844 pkx() { # package extract
1845   local pkg cached tmp f
1846   c "$(mktemp -d)"
1847   pkg=$1
1848   # shellcheck disable=SC2012
1849   cached=$(ls -t /var/cache/apt/archives/${pkg}_* | tail -n1 2>/dev/null) ||:
1850   if [[ $cached ]]; then
1851     m cp $cached .
1852   else
1853     m aptitude download $pkg || return 1
1854   fi
1855   tmp=(*); f=${tmp[0]} # only 1 expected
1856   m ex $f
1857   m rm -f $f
1858 }
1859
1860 # pgrep and kill
1861 pk1() {
1862   local tmpf
1863   local -a pids
1864   tmpf=$(pgrep -f "$*")
1865   mapfile -t pids <<<"$tmpf"
1866   case ${#pids[@]} in
1867     1)
1868       # shellcheck disable=SC2128
1869       {
1870         ps -F ${pids[0]}
1871         m kill ${pids[0]}
1872       }
1873       ;;
1874     0) echo "no pid found" ;;
1875     *)
1876       ps -F ${pids[@]}
1877       ;;
1878   esac
1879 }
1880
1881 psg () {
1882   local x y help
1883   help="Usage: psg [--help] GREP_ARGS
1884 grep ps and output in a nice format"
1885   if [[ $1 == --help ]]; then
1886     echo "$help"
1887     return
1888   fi
1889   x=$(ps -eF)
1890   # final grep is because some commands tend to have a lot of trailing spaces
1891   y=$(echo "$x" | grep -iP "$@" | grep -o '.*[^ ]') ||:
1892   if [[ $y ]]; then
1893     echo "$x" | head -n 1 || [[ $? == 141 ]]
1894     echo "$y"
1895   fi
1896 }
1897
1898 pubip() { curl -4s https://icanhazip.com; }
1899 pubip6() { curl -6s https://icanhazip.com; }
1900 whatismyip() { pubip; }
1901
1902
1903 q() { # start / launch a program in the backround and redir output to null
1904   "$@" &> /dev/null &
1905 }
1906
1907 # shellcheck disable=SC2120
1908 r() {
1909   if [[ $HISTFILE ]]; then
1910     history -a # save history
1911   fi
1912   trap ERR # this avoids a segfault
1913   exit ${1:0}
1914   # i had this redir, not sure why
1915   #  exit "$@" 2>/dev/null
1916 }
1917
1918 # scp is insecure and deprecated.
1919 scp() {
1920   rsync -Pt --inplace "$@"
1921 }
1922 ccomp rsync scp
1923
1924 randport() {
1925   # available high ports are 1024-65535,
1926   # but lets skip things that are more likely to be in use
1927   python3 <<'EOF'
1928 import secrets
1929 print(secrets.SystemRandom().randrange(10002,65500))
1930 EOF
1931 }
1932
1933 # reapply bashrc
1934 reb() {
1935   # shellcheck disable=SC1090 # expected to not follow
1936   source ~/.bashrc
1937 }
1938
1939 rl() {
1940   readlink -f "$@"
1941 }
1942 ccomp readlink rl
1943
1944 rsd() {
1945   # rsync, root is required to keep permissions right.
1946   # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
1947     #                                   --no-times --delete
1948   # basically, make an exact copy, use checksums instead of file times to be more accurate
1949   rsync -ahvic --delete "$@"
1950 }
1951 rsa() {
1952   # like rlu, but dont delete files on the target end which
1953   # do not exist on the original end.
1954   rsync -ahvic "$@"
1955 }
1956 rst() {
1957   # rl without preserving modification time.
1958   rsync -ahvic --delete --no-t "$@"
1959 }
1960 # [RSYNC_OPTS] HOST PATH
1961 rsu() {
1962   # eg. rsu -opts frodo /testpath
1963   # relative paths will expanded with readlink -f.
1964   opts=("${@:1:$#-2}") #  1 to last -2
1965   path="${*:$#}" # last
1966   host="${*:$#-1:1}" # last -1
1967   if [[ $path == .* ]]; then
1968     path=$(readlink -f $path)
1969   fi
1970   m rsync -ahvi --relative --no-implied-dirs "${opts[@]}" "$path" "root@$host:/";
1971 }
1972 ccomp rsync rsd rsa rst rsu
1973
1974 # find programs listening on a port
1975 ssp() {
1976   local port=$1
1977   # to figure out these args, i had to look at the man page from git version, as of 2022-04.
1978   s ss -lpn state listening sport = $port
1979 }
1980
1981 resolvcat() {
1982   local f
1983   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1984     m s nscd -i hosts
1985   fi
1986   f=/etc/resolv.conf
1987   echo $f:;  ccat $f
1988   hr; s ss -lpn sport = 53
1989   if systemctl is-enabled dnsmasq &>/dev/null || [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1990     # this will fail is dnsmasq is failed
1991     hr; m ser status dnsmasq | cat || :
1992     f=/etc/dnsmasq.conf
1993     hr; echo $f:;  ccat $f
1994     hr; m grr '^ *(servers-file|server) *=|^ *no-resolv *$' /etc/dnsmasq.conf /etc/dnsmasq.d
1995     f=/etc/dnsmasq-servers.conf
1996     hr; echo $f:;  ccat $f
1997   fi
1998   hr
1999   echo /etc/nsswitch.conf:
2000   grep '^ *hosts:' /etc/nsswitch.conf
2001   if systemctl is-enabled systemd-resolved &>/dev/null || [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
2002     hr; m ser status systemd-resolved | cat || :
2003     hr; m resolvectl status | cat
2004   fi
2005
2006 }
2007 rcat() {
2008   resolvcat | less
2009 }
2010 reresolv() {
2011   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
2012     m ser stop nscd
2013     sleep .5
2014     m ser start nscd
2015     m sudo nscd -i hosts
2016   fi
2017   if [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
2018     m sudo systemctl restart dnsmasq
2019   fi
2020   if [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
2021     m sudo systemctl restart systemd-resolved
2022   fi
2023   if type -P resolvectl &>/dev/null; then
2024     resolvectl flush-caches
2025   fi
2026 }
2027
2028 # add annoyingly long argument which should be the default
2029 sedi() {
2030   sed -i --follow-symlinks "$@"
2031 }
2032
2033 rmstrips() {
2034   ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
2035 }
2036
2037 urun () {
2038   umask $1
2039   shift
2040   "$@"
2041 }
2042 sudo () {
2043   command sudo "$@" || return $?
2044   DID_SUDO=true
2045 }
2046 s() {
2047   # background
2048   # I use a function because otherwise we cant use in a script,
2049   # cant assign to variable.
2050   #
2051   # note: gksudo is recommended for X apps because it does not set the
2052   # home directory to the same, and thus apps writing to ~ fuck things up
2053   # with root owned files.
2054   #
2055   if [[ $EUID != 0 || $1 == -* ]]; then
2056     # shellcheck disable=SC2034
2057     SUDOD="$PWD" command sudo -i "$@"
2058     DID_SUDO=true
2059   else
2060     "$@"
2061   fi
2062 }
2063 sb() { # sudo bash -c
2064   # use sb instead of s is for sudo redirections,
2065   # eg. sb 'echo "ok fine" > /etc/file'
2066   # shellcheck disable=SC2034
2067   local SUDOD="$PWD"
2068   sudo -i bash -c "$@"
2069 }
2070 # secret sudo
2071 se() { s urun 0077 "$@"; }
2072 ccomp sudo s sb se
2073
2074 safe_rename() { # warn and dont rename if file exists.
2075   # mv -n exists, but it\'s silent
2076   if [[ $# != 2 ]]; then
2077     echo safe_rename error: $# args, need 2 >&2
2078     return 1
2079   fi
2080   if [[ $1 != "$2" ]]; then # yes, we want to silently ignore this
2081     if [[ -e $2 || -L $2 ]]; then
2082       echo "Cannot rename $1 to $2 as it already exists."
2083     else
2084       mv -vi "$1" "$2"
2085     fi
2086   fi
2087 }
2088
2089
2090 sd() {
2091   sudo dd status=none of="$1"
2092 }
2093
2094 ser() {
2095   if type -p systemctl &>/dev/null; then
2096     s systemctl "$@"
2097   else
2098     if (( $# >= 3 )); then
2099       echo iank: ser expected 2 or less arguments
2100       return 1
2101     fi
2102     s service $2 $1
2103   fi
2104 }
2105 serstat() {
2106   systemctl -n 40 status "$@"
2107 }
2108
2109 seru() { systemctl --user "$@"; }
2110 # like restart, but do nothing if its not already started
2111 srestart() {
2112   local service=$1
2113   if [[ $(s systemctl --no-pager show -p ActiveState $service ) == ActiveState=active ]]; then
2114     systemctl restart $service
2115   fi
2116 }
2117
2118 setini() { # set a value in a .ini style file
2119   key="$1" value="$2" section="$3" file="$4"
2120   if [[ -s $file ]]; then
2121     sed -ri -f - "$file" <<EOF
2122 # remove existing keys
2123 / *\[$section\]/,/^ *\[[^]]+\]/{/^\s*${key}[[:space:]=]/d}
2124 # add key
2125 /^\s*\[$section\]/a $key=$value
2126 # from section to eof, do nothing
2127 /^\s*\[$section\]/,\$b
2128 # on the last line, if we haven't found section yet, add section and key
2129 \$a [$section]\\
2130 $key=$value
2131 EOF
2132   else
2133     cat >"$file" <<EOF
2134 [$section]
2135 $key=$value
2136 EOF
2137   fi
2138 }
2139
2140 sgo() { # service go
2141   service=$1
2142   ser restart $service || return 1
2143   if type -p systemctl &>/dev/null; then
2144     ser enable $service
2145   fi
2146 }
2147 soff () {
2148   for service; do
2149     # ignore services that dont exist
2150     if systemctl cat $service &>/dev/null; then
2151       ser stop $service;
2152       ser disable $service
2153     fi
2154   done
2155 }
2156
2157 sgu() {
2158   systemctl list-unit-files | rg "$@"
2159 }
2160
2161
2162 sk() {
2163   # disable a warning with:
2164   # shellcheck disable=SC2206 # reasoning
2165
2166   # see bash-template/style-guide.md for justifications
2167
2168   local quotes others
2169   quotes=2048,2068,2086,2206,2254
2170   others=2029,2032,2033,2054,2164,
2171   shellcheck -W 999 -x -e $quotes,$others "$@" || return $?
2172 }
2173 # sk with quotes. For checking scripts that we expect to take untrusted
2174 # input in order to verify we quoted vars.
2175 skq() {
2176   local others
2177   others=2029,2033,2054,2164
2178   shellcheck -W 999 -x -e $others "$@" || return $?
2179 }
2180
2181 skgit() {
2182   local f
2183   for f in $(i s | awk '$1 == "modified:" {print $2}'); do
2184     if [[ $(head -n1 "$f") == '#!/bin/bash'* ]]; then
2185       sk $f ||:
2186     fi
2187   done
2188 }
2189
2190 # sl: ssh, but firsh rsync our bashrc and related files to a special
2191 # directory on the remote host if needed.
2192
2193 # Some environment variables and files need to be setup for this to work
2194 # (mine are set at the beginning of this file)
2195
2196 # SL_FILES_DIR: Environment variable. Path to folder which should at
2197 # least have a .bashrc file or symlink. This dir will be rsynced to ~ on
2198 # remote hosts (top level symlinks are resolved) unless the host already
2199 # has a $SL_FILES_DIR/.bashrc. In that case, we assume it is a host you
2200 # control and sync files to separately and already has the ~/.bashrc you
2201 # want. The remote bash will also take its .inputrc config from this
2202 # folder (default of not existing is fine). Mine looks like this:
2203 # https://iankelling.org/git/?p=distro-setup;a=tree;f=sl/.iank
2204
2205 # SL_INFO_DIR: Environment variable. This folder stores info about what
2206 # we detected on the remote system and when we last synced. It will be created
2207 # if it does not exist. Sometimes you may want to forget about a
2208 # remote system, you can use sl --rsync, or the function for that slr
2209 # below.
2210
2211 # SL_TEST_CMD: Env var. Meant to be used to vary the files synced
2212 # depending on the remote host. Run this string on the remote host the
2213 # first time sl is run (or if we run slr). The result is passed to
2214 # SL_TEST_HOOK. For example,
2215 # export SL_TEST_CMD=". /etc/os-release ; echo \${VERSION//[^a-zA-Z0-9]/}"
2216
2217 # SL_TEST_HOOK: Env var. It is run as $SL_TEST_HOOK. This can set
2218 # $SL_FILES_DIR to vary the files synced.
2219
2220 # SL_RSYNC_ARGS: Env var. String of arguments passed to rsync. For
2221 # example to exclude files within a directory. Note, excluded
2222 # files wont be deleted on rsync, you can add --delete-excluded
2223 # to the rsync command if that is desired.
2224
2225 # SL_SSH_ARGS: Env var. Default arguments passed to ssh.
2226
2227 # For when ~/.bashrc is already customized on the remote server, you
2228 # might find it problematic that ~/.bashrc is sourced for ALL ssh
2229 # commands, even in scripts. This paragraph is all about that. bash
2230 # scripts dont source ~/.bashrc, but call ssh in scripts and you get
2231 # ~/.bashrc. You dont want this. .bashrc is meant for interactive shells
2232 # and if you customize it, probably has bugs from time to time. This is
2233 # bad. Here's how I fix it. I have a special condition to "return" in my
2234 # .bashrc for noninteractive ssh shells (copy that code). Then use this
2235 # function or similar that passes LC_USEBASHRC=t when sshing and I want
2236 # my bashrc. Also, I don't keep most of my bashrc in .bashrc, i source a
2237 # separate file because even if I return early on, the whole file gets
2238 # parsed which can fail if there is a syntax error.
2239 sl() {
2240   # Background on LC_USEBASHRC var (no need to read if you just want to
2241   # use this function): env variables sent across ssh are strictly
2242   # limited, but we get LC_* at least in debian based machines, so we
2243   # just make that * be something no normal program would use. Note, on
2244   # hosts that dont allow LC_* I start an inner shell with LC_USEBASHRC
2245   # set, and the inner shell also allows running a nondefault
2246   # .bashrc. This means the outer shell still ran the default .bashrc,
2247   # but that is the best we can do.
2248
2249   local now args remote dorsync haveinfo tmpa sshinfo tmp tmp2 type info_sec force_rsync \
2250         sync_dirname testcmd extra_info testbool files_sec sl_test_cmd sl_test_hook
2251   declare -a args tmpa
2252
2253   args=($SL_SSH_ARGS)
2254
2255   # ssh [-1246Antivivisectionist] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port]
2256   # [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11] [-i identity_file] [-L address]
2257   # [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port] [-Q query_option]
2258   # [-R address] [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]] [user@]hostname
2259   # [command]
2260
2261   # ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
2262   # [-D [bind_address:]port] [-E log_file] [-e escape_char]
2263   # [-F configfile] [-I pkcs11] [-i identity_file]
2264   # [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
2265   # [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address]
2266   # [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
2267
2268   force_rsync=false
2269   if [[ $1 == --rsync ]]; then
2270     force_rsync=true
2271     shift
2272   fi
2273   # shellcheck disable=SC2153 # intentional
2274   sl_test_cmd=$SL_TEST_CMD
2275   # shellcheck disable=SC2153 # intentional
2276   sl_test_hook=$SL_TEST_HOOK
2277   # shellcheck disable=SC2153 # intentional
2278   sl_rsync_args=$SL_RSYNC_ARGS
2279   while [[ $1 ]]; do
2280     case "$1" in
2281       --rsync)
2282         force_rsync=true
2283         ;;
2284       --sl-test-cmd)
2285         sl_test_cmd="$2"
2286         shift
2287         ;;
2288       --sl-test-hook)
2289         sl_test_hook="$2"
2290         shift
2291         ;;
2292       --sl-rsync-args)
2293         sl_rsync_args="$2"
2294         shift
2295         ;;
2296       *)
2297         break
2298         ;;
2299     esac
2300     shift
2301   done
2302
2303   while [[ $1 ]]; do
2304     case "$1" in
2305       # note we dont support things like -4oOption
2306       -[46AaCfGgKkMNnqsTtVvXxYy]*)
2307         args+=("$1"); shift
2308         ;;
2309       -[bcDEeFIiJLlmOopQRSWw]*)
2310         # -oOption etc is valid
2311         if (( ${#1} >= 3 )); then
2312           args+=("$1"); shift
2313         else
2314           args+=("$1" "$2"); shift 2
2315         fi
2316         ;;
2317       *)
2318         break
2319         ;;
2320     esac
2321   done
2322   remote="$1"
2323   if [[ ! $remote ]]; then
2324     echo $0: error hostname required >&2
2325     return 1
2326   fi
2327   shift
2328
2329   if [[ ! $SL_INFO_DIR  ]]; then
2330     echo 'error: missing SL_INFO_DIR env var' >&2
2331     return 1
2332   fi
2333
2334   dorsync=false
2335   haveinfo=false
2336   tmpa=($SL_INFO_DIR/???????????"$remote")
2337   sshinfo=${tmpa[0]}
2338   if [[ -e $sshinfo ]]; then
2339     if $force_rsync; then
2340       rm -f $sshinfo
2341     else
2342       haveinfo=true
2343     fi
2344   fi
2345   if $haveinfo; then
2346     tmp=${sshinfo[0]##*/}
2347     tmp2=${tmp::11}
2348     type=${tmp2: -1}
2349     extra_info=$(cat $sshinfo)
2350   else
2351     # we test for string to know ssh succeeded
2352     testbool="test -e $SL_FILES_DIR/.bashrc -a -L .bashrc -a -v LC_USEBASHRC"
2353     testcmd="if $testbool; then printf y; else printf n; fi"
2354     if ! tmp=$(LC_USEBASHRC=y command ssh "${args[@]}" "$remote" "$testcmd; $sl_test_cmd"); then
2355       echo failed sl test. doing plain ssh -v
2356       command ssh -v "${args[@]}" "$remote"
2357     fi
2358     if [[ $tmp == y* ]]; then
2359       type=a
2360     else
2361       dorsync=true
2362       type=b
2363     fi
2364     extra_info="${tmp:1}"
2365   fi
2366   if [[ $sl_test_hook ]]; then
2367     RSYNC_RSH="ssh ${args[*]}" $sl_test_hook "$extra_info" "$remote"
2368   fi
2369
2370   if $haveinfo && [[ $type == b ]]; then
2371     info_sec=${tmp::10}
2372     read -r files_sec _ < <(find -L $SL_FILES_DIR -printf "%T@ %p\n" | sort -nr || [[ $? == 141 || ${PIPESTATUS[0]} == 32 ]]  )
2373     files_sec=${files_sec%%.*}
2374     if (( files_sec > info_sec )); then
2375       dorsync=true
2376       rm -f $sshinfo
2377     fi
2378   fi
2379
2380   sync_dirname=${SL_FILES_DIR##*/}
2381
2382   if [[ ! $SL_FILES_DIR  ]]; then
2383     echo 'error: missing SL_FILES_DIR env var' >&2
2384     return 1
2385   fi
2386
2387   if $dorsync; then
2388     RSYNC_RSH="ssh ${args[*]}" m rsync -rptL --delete $sl_rsync_args $SL_FILES_DIR "$remote":
2389   fi
2390   if $dorsync || ! $haveinfo; then
2391     sshinfo=$SL_INFO_DIR/$EPOCHSECONDS$type"$remote"
2392     [[ -e $SL_INFO_DIR ]] || mkdir -p $SL_INFO_DIR
2393     printf "%s\n" "$extra_info" >$sshinfo
2394     chmod 666 $sshinfo
2395   fi
2396   if [[ $type == b ]]; then
2397     if (( ${#@} )); then
2398       # Theres a couple ways to pass arguments, im not sure whats best,
2399       # but relying on bash 4.4+ escape quoting seems most reliable.
2400       command ssh "${args[@]}" "$remote" \
2401               LC_USEBASHRC=t bash -c '.\ '$sync_dirname'/.bashrc\;"\"\$@\""' bash ${@@Q}
2402     elif [[ ! -t 0 ]]; then
2403       # This case is when commands are being piped to ssh.
2404       # Normally, no bashrc gets sourced.
2405       # But, since we are doing all this, lets source it because we can.
2406       cat <(echo . $sync_dirname/.bashrc) - | command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2407     else
2408       command ssh -t "${args[@]}" "$remote" LC_USEBASHRC=t INPUTRC=$sync_dirname/.inputrc bash --rcfile $sync_dirname/.bashrc
2409     fi
2410   else
2411     if [[ -t 0 ]]; then
2412       LC_USEBASHRC=t command ssh "${args[@]}" "$remote" ${@@Q}
2413     else
2414       command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2415     fi
2416   fi
2417   # this function inspired from https://github.com/Russell91/sshrc
2418 }
2419
2420 slr() {
2421   sl --rsync "$@"
2422 }
2423 sss() { # ssh solo
2424   sl -oControlMaster=no -oControlPath=/ "$@"
2425 }
2426 # kill off old shared socket then ssh
2427 ssk() {
2428   m ssh -O exit "$@" || [[ $? == 255 ]]
2429   m sl "$@"
2430 }
2431 ccomp ssh sl slr sss ssk
2432 # plain ssh
2433 ssh() {
2434   if [[ $TERM == alacritty || $TERM == xterm-kitty ]]; then
2435     TERM=xterm-256color LC_USEBASHRC=t command ssh "$@"
2436   else
2437     LC_USEBASHRC=t command ssh "$@"
2438   fi
2439 }
2440
2441
2442 slog() {
2443   # log with script. timing is $1.t and script is $1.s
2444   # -l to save to ~/typescripts/
2445   # -t to add a timestamp to the filenames
2446   local logdir do_stamp arg_base
2447   (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
2448   logdir="/a/dt/"
2449   do_stamp=false
2450   while getopts "lt" option
2451   do
2452     case $option in
2453       l) arg_base=$logdir ;;
2454       t) do_stamp=true ;;
2455       *)
2456         echo error: bad option
2457         return 1
2458         ;;
2459     esac
2460   done
2461   shift $((OPTIND - 1))
2462   arg_base+=$1
2463   [[ -e $logdir ]] || mkdir -p $logdir
2464   $do_stamp && arg_base+=$(date +%F.%T%z)
2465   script -t $arg_base.s 2> $arg_base.t
2466 }
2467 splay() { # script replay
2468   #logRoot="$HOME/typescripts/"
2469   #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
2470   scriptreplay "$1.t" "$1.s"
2471 }
2472
2473 sr() {
2474   # sudo redo. be aware, this command may not work right on strange distros or earlier software
2475   if [[ $# == 0 ]]; then
2476     sudo -E bash -c -l "$(history -p '!!')"
2477   else
2478     echo this command redos last history item. no argument is accepted
2479   fi
2480 }
2481
2482 srm () {
2483   # with -ll, less secure but faster.
2484   command srm -ll "$@"
2485 }
2486
2487 srun() {
2488   scp $2 $1:/tmp
2489   ssh $1 "/tmp/${2##*/}" "$(printf "%q\n" "${@:2}")"
2490 }
2491
2492
2493 swap() {
2494   local tmp
2495   tmp=$(mktemp)
2496   mv $1 $tmp
2497   mv $2 $1
2498   mv $tmp $2
2499 }
2500
2501 tclock() { # terminal clock
2502   local x
2503   clear
2504   date +%l:%_M
2505   len=60
2506   # this goes to full width
2507   #len=${1:-$((COLUMNS -7))}
2508   x=1
2509   while true; do
2510     if (( x == len )); then
2511       end=true
2512       d="$(date +%l:%_M)   "
2513     else
2514       end=false
2515       d=$(date +%l:%M:%_S)
2516     fi
2517     echo -en "\r"
2518     echo -n "$d"
2519     for ((i=0; i<x; i++)); do
2520       if (( i % 6 )); then
2521         echo -n _
2522       else
2523         echo -n .
2524       fi
2525     done
2526     if $end; then
2527       echo
2528       x=1
2529     else
2530       x=$((x+1))
2531     fi
2532     sleep 5
2533   done
2534 }
2535
2536
2537 te() {
2538   # test existence / exists
2539   local ret=0
2540   for x in "$@"; do
2541     [[ -e "$x" || -L "$x" ]] || ret=1
2542   done
2543   return $ret
2544 }
2545
2546 psoff() {
2547   # normally, i would just execute these commands in the function.
2548   # however, DEBUG is not inherited, so we need to run it outside a function.
2549   # And we want to run set -x afterwards to avoid spam, so we cram everything
2550   # in here, and then it will run after this function is done.
2551   # # set as array to satisfy shellcheck, but it is equivalent to setting it as non-array
2552   PROMPT_COMMAND=('trap DEBUG; unset PROMPT_COMMAND; PS1="\w \$ "')
2553 }
2554 pson() {
2555   PROMPT_COMMAND=(prompt-command)
2556   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2557     trap 'settitle "$BASH_COMMAND"' DEBUG
2558   fi
2559 }
2560
2561 # prometheus node curl
2562 pnodecurl() {
2563   local host
2564   host=${1:-127.0.0.1}
2565   s curl --cert-type PEM --cert /etc/prometheus/ssl/prometheus_cert.pem --key /etc/prometheus/ssl/prometheus_key.pem --cacert /etc/prometheus/ssl/prom_node_cert.pem --resolve prom_node:9100:$host -v https://prom_node:9100/metrics
2566 }
2567
2568 tx() { # toggle set -x, and the prompt so it doesnt spam
2569   if [[ $- == *x* ]]; then
2570     set +x
2571     pson
2572   else
2573     psoff
2574   fi
2575 }
2576
2577 psnetns() {
2578   # show all processes in the network namespace $1.
2579   # blank entries appear to be subprocesses/threads
2580   local x netns
2581   netns=$1
2582   ps -w | head -n 1
2583   sudo find -L /proc/[1-9]*/task/*/ns/net -samefile /run/netns/$netns | cut -d/ -f5 | \
2584     while read -r l; do
2585       x=$(ps -w --no-headers -p $l);
2586       if [[ $x ]]; then echo "$x"; else echo $l; fi;
2587     done
2588 }
2589 nonet() {
2590   if ! s ip netns list | grep -Fx nonet &>/dev/null; then
2591     s ip netns add nonet
2592   fi
2593   sudo -E env /sbin/ip netns exec nonet sudo -E -u iank /bin/bash
2594 }
2595
2596 m() { printf "%s\n" "$*";  "$@"; }
2597
2598 # update file. note: duplicated in mail-setup.
2599 # updates $ur u result to true or false
2600 # updates $reload to true if file updated is in /etc/systemd/system
2601 u() {
2602   local tmp tmpdir dest="$1"
2603   local base="${dest##*/}"
2604   local dir="${dest%/*}"
2605   if [[ $dir != "$base" ]]; then
2606     # dest has a directory component
2607     mkdir -p "$dir"
2608   fi
2609   # shellcheck disable=SC2034 # see comment at top of function
2610   ur=false # u result
2611   tmpdir="$(mktemp -d)"
2612   cat >$tmpdir/"$base"
2613   tmp=$(rsync -ic $tmpdir/"$base" "$dest")
2614   if [[ $tmp ]]; then
2615     printf "%s\n" "$tmp"
2616     # shellcheck disable=SC2034 # see comment at top of function
2617     ur=true
2618     if [[ $dest == /etc/systemd/system/* ]]; then
2619       # shellcheck disable=SC2034 # see comment at top of function
2620       reload=true
2621     fi
2622   fi
2623   rm -rf $tmpdir
2624 }
2625
2626
2627 uptime() {
2628   if type -p uprecords &>/dev/null; then
2629     uprecords -B
2630   else
2631     command uptime
2632   fi
2633 }
2634
2635 virshrm() {
2636   for x in "$@"; do virsh destroy "$x"; virsh undefine "$x"; done
2637 }
2638
2639 vm-set-listen(){
2640   local t
2641   t=$(mktemp)
2642   local vm=$1
2643   local ip=$2
2644   sudo virsh dumpxml $vm | sed -r "s/(<listen.*address=')([^']+)/\1$ip/" | \
2645     sed -r "s/listen='[^']+/listen='$ip/"> $t
2646   sudo virsh undefine $vm
2647   sudo virsh define $t
2648 }
2649
2650
2651 vmshare() {
2652   vm-set-listen $1 0.0.0.0
2653 }
2654
2655
2656 vmunshare() {
2657   vm-set-listen $1 127.0.0.1
2658 }
2659
2660 myiwscan() {
2661   # find input, copy to pattern space, when we find the first field, print the copy in different order without newlines.
2662   # instead of using labels, we could just match a line and group, eg: /signal:/,{s/signal:(.*)/\1/h}
2663   sudo iw dev wls1 scan | sed -rn  "
2664 s/^\Wcapability: (.*)/\1/;Ta;h;b
2665 :a;s/^\Wsignal: -([^.]+).*/\1/;Tb;H;b
2666 # padded to min width of 20
2667 :b;s/\WSSID: (.*)/\1                    /;T;s/^(.{20}(.*[^ ])?) */\1/;H;g;s/(.*)\n(.*)\n(.*)/\2 \3  \1/gp;b
2668 "|sort -r
2669 }
2670
2671 # Run script by copying it to a temporary location first,
2672 # and changing directory, so we don't have any open
2673 # directories or files that could cause problems when
2674 # remounting.
2675 zr() {
2676   local tmp
2677   tmp=$(type -p "$1")
2678   if [[ $tmp ]]; then
2679     cd "$(mktemp -d)"
2680     cp -a "$tmp" .
2681     shift
2682     ./"${tmp##*/}" "$@"
2683   else
2684     "$@"
2685   fi
2686 }
2687
2688
2689 # * spark
2690 # spark 1 5 22 13 53
2691 #   # => ▁▁▃▂▇
2692
2693 # The MIT License
2694 # Copyright (c) Zach Holman, https://zachholman.com
2695 # https://github.com/holman/spark
2696
2697 # As of 2022-10-28, I reviewed github forks that had several newer
2698 # commits, none had anything interesting. I did a little refactoring
2699 # mostly to fix emacs indent bug.
2700
2701 # Generates sparklines.
2702 _spark_echo()
2703 {
2704   if [ "X$1" = "X-n" ]; then
2705     shift
2706     printf "%s" "$*"
2707   else
2708     printf "%s\n" "$*"
2709   fi
2710 }
2711
2712
2713 spark()
2714 {
2715   local f tc
2716   local n numbers=
2717
2718   # find min/max values
2719   local min=0xffffffff max=0
2720
2721   for n in ${@//,/ }
2722   do
2723     # on Linux (or with bash4) we could use `printf %.0f $n` here to
2724     # round the number but that doesn't work on OS X (bash3) nor does
2725     # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
2726     n=${n%.*}
2727     (( n < min )) && min=$n
2728     (( n > max )) && max=$n
2729     numbers=$numbers${numbers:+ }$n
2730   done
2731
2732   # print ticks
2733   local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
2734
2735   # use a high tick if data is constant
2736   (( min == max )) && ticks=(▅ ▆)
2737
2738   tc=${#ticks[@]}
2739   f=$(( ( (max-min) <<8)/( tc - 1) ))
2740   (( f < 1 )) && f=1
2741
2742   for n in $numbers
2743   do
2744     _spark_echo -n ${ticks[$(( (((n-min)<<8)/f) ))]}
2745   done
2746   _spark_echo
2747 }
2748
2749 pdfwc() { local f; for f; do echo "$f" "$(pdfinfo "$f" | awk '/^Pages:/ {print $2}')"; done }
2750
2751
2752 # nvm install script appended this to my .bashrc. I dont want to run it all the time,
2753 # so put it in a function.
2754 nvm-init() {
2755   export NVM_DIR="$HOME/.nvm"
2756   # shellcheck disable=SC1091 # may not exist, & third party
2757   [ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"  # This loads nvm
2758   # shellcheck disable=SC1091 # may not exist, & third party
2759   [ -s "$NVM_DIR/bash_completion" ] && source "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
2760 }
2761
2762
2763 leap-year() {
2764   if date -d 'february 29' &>/dev/null; then
2765     year_days=366
2766   else
2767     year_days=365
2768   fi
2769   echo $year_days
2770 }
2771
2772 # on-battery
2773 on-bat() {
2774   if [[ -e /sys/class/power_supply/AC/online && $(</sys/class/power_supply/AC/online) == 0 ]]; then
2775     return 1
2776   fi
2777 }
2778
2779 # make vim work with my light colortheme terminal.
2780 vim() {
2781   if [[ -e ~/.vimrc ]]; then
2782     command vim "$@"
2783   else
2784     command vim -c ':colorscheme peachpuff' "$@"
2785   fi
2786 }
2787
2788 # ls count. usage: pass a directory, get the number of files.
2789 # https://unix.stackexchange.com/questions/90106/whats-the-most-resource-efficient-way-to-count-how-many-files-are-in-a-director
2790 lsc() {
2791   # shellcheck disable=SC2790 # intentional
2792   ls -Uq "$@"|wc -l
2793 }
2794
2795 # run then notify. close notification after the next prompt.
2796 rn() {
2797   "$@"
2798   dunstify -u critical "$*"
2799   _psrun=(dunstctl close-all)
2800 }
2801 n() {
2802   dunstify -u critical n
2803   _psrun=(dunstctl close-all)
2804 }
2805
2806 catnew() {
2807   local dir file
2808   dir="$1"
2809   inotifywait -m "$dir" -e create -e moved_to | while read -r _ _ file; do
2810     hr
2811     cat "$dir/$file"
2812   done
2813 }
2814 # cat mail
2815 cm() {
2816   catnew /m/md/$1/new
2817 }
2818
2819
2820 # * misc stuff
2821
2822
2823 if $use_color && type -p tput &>/dev/null; then
2824   # this is nice for a dark background terminal:
2825   # https://github.com/trapd00r/LS_COLORS
2826   # I would like if there was something similar for light.
2827
2828   # the default bold green is too light.
2829   # this explains the codes: https://gist.github.com/thomd/7667642
2830   export LS_COLORS=ex=1
2831
2832   term_bold="$(tput bold)"
2833   term_red="$(tput setaf 1)"
2834   term_green="$(tput setaf 2)"
2835   # shellcheck disable=SC2034 # expected
2836   term_yellow="$(tput setaf 3)"
2837   term_purple="$(tput setaf 5)"
2838   term_nocolor="$(tput sgr0)" # no font attributes
2839
2840   # unused so far. commented for shellcheck
2841   # term_underl="$(tput smul)"
2842   # term_blue="$(tput setaf 4)"
2843   # term_cyan="$(tput setaf 6)"
2844 fi
2845 # Try to keep environment pollution down, EPA loves us.
2846 unset safe_term match_lhs use_color
2847
2848 # * prompt
2849
2850
2851 if [[ $- == *i* ]]; then
2852
2853
2854   case $HOSTNAME in
2855     bk|je|li)
2856       if [[ $EUID == 1000 ]]; then
2857         system-status _ ||:
2858       fi
2859       ;;
2860   esac
2861
2862
2863   # this needs to come before next ps1 stuff
2864   # this stuff needs bash 4, feb 2009,
2865   # old enough to no longer condition on $BASH_VERSION anymore
2866   shopt -s autocd
2867   shopt -s dirspell
2868   PS1='\w'
2869   if [[ $- == *i* ]]  && [[ ! $LC_INSIDE_EMACS ]]; then
2870     PROMPT_DIRTRIM=2
2871     bind -m vi-command B:shell-backward-word
2872     bind -m vi-command W:shell-forward-word
2873   fi
2874
2875   if [[ $SSH_CLIENT || $SUDO_USER ]]; then
2876     unset PROMPT_DIRTRIM
2877     PS1="\h:$PS1"
2878   fi
2879
2880   # emacs terminal has problems if this runs slowly,
2881   # so I've thrown a bunch of things at the wall to speed it up.
2882   prompt-command() {
2883     local return=$? # this MUST COME FIRST
2884     local ps_char ps_color
2885     unset IFS
2886
2887     if [[ $HISTFILE ]]; then
2888       history -a # save history
2889     fi
2890
2891     case $return in
2892       0) ps_color="$term_purple"
2893          ps_char='\$'
2894          ;;
2895       *) ps_color="$term_green"
2896          ps_char="$return \\$"
2897          ;;
2898     esac
2899     if [[ ! -O . ]]; then # not owner
2900       if [[ -w . ]]; then # writable
2901         ps_color="$term_bold$term_red"
2902       else
2903         ps_color="$term_bold$term_green"
2904       fi
2905     fi
2906
2907     # faster than sourceing the file im guessing
2908     if [[ -e /dev/shm/iank-status && ! -e /tmp/quiet-status ]]; then
2909       eval "$(< /dev/shm/iank-status)"
2910     fi
2911     if [[ $MAIL_HOST && $MAIL_HOST != "$HOSTNAME" ]]; then
2912       ps_char="@ $ps_char"
2913     fi
2914     jobs_char=
2915     if [[ $(jobs -p) ]]; then
2916       jobs_char='j\j '
2917     fi
2918
2919
2920     # allow a function to specify a command to run after we run the next
2921     # command. Use case: a function makes a persistent notification. If
2922     # we happen to be using that terminal, we can just keep working by
2923     # entering our next command, even a noop in order to dismiss the
2924     # notification, instead of having to explicitly dismiss it.
2925     if [[ ${_psrun[*]} ]]; then
2926       if (( _psrun_count >= 1 )); then
2927
2928         "${_psrun[@]}" ||:
2929         _psrun_count=0
2930         unset _psrun
2931       else
2932         _psrun_count=$(( _psrun_count + 1 ))
2933       fi
2934     else
2935       _psrun_count=0
2936     fi
2937
2938     # We could test if sudo is active with sudo -nv
2939     # but then we get an email and log of lots of failed sudo commands.
2940     # We could turn those off, but seems better not to.
2941     if [[ $EUID != 0 ]] && [[ $DID_SUDO ]]; then
2942       psudo="\[$term_bold$term_red\]s\[$term_nocolor\] "
2943     fi
2944     if [[ ! $HISTFILE ]]; then
2945       ps_char="NOHIST $ps_char"
2946     fi
2947     PS1="${PS1%"${PS1#*[wW]}"} $jobs_char$psudo\[$ps_color\]$ps_char\[$term_nocolor\] "
2948
2949     # copy of what is automatically added by guix.
2950     # adds [env] to PS1 if GUIX_ENVIRONMENT is set and PS1 contains '$';
2951     if [ -n "$GUIX_ENVIRONMENT" ]; then
2952       if [[ $PS1 =~ (.*)"\\$" ]]; then
2953         PS1="${BASH_REMATCH[1]} [env]\\\$ "
2954       fi
2955     fi
2956
2957
2958     # set titlebar. instead, using more advanced
2959     # titelbar below
2960     #echo -ne "$_title_escape $HOSTNAME ${PWD/#$HOME/~}  \007"
2961   }
2962   PROMPT_COMMAND=(prompt-command)
2963
2964   if [[ $TERM == screen* ]]; then
2965     _title_escape="\033]..2;"
2966   else
2967     # somme sites recommend this, i dunno what the diff is.
2968     #_title_escape="\033]30;"
2969     _title_escape="\033]0;"
2970   fi
2971
2972   # make the titlebar be the last command and the current directory.
2973   settitle () {
2974
2975
2976     # These are some checks to help ensure we dont set the title at
2977     # times that the debug trap is running other than the case we
2978     # want. Some of them might not be needed.
2979     if (( ${#FUNCNAME[@]} != 1 || ${#BASH_ARGC[@]} != 2 || BASH_SUBSHELL != 0 )); then
2980       return 0
2981     fi
2982     if [[ $1 == prompt-command ]]; then
2983       return 0
2984     fi
2985     echo -ne "$_title_escape ${PWD/#$HOME/~} "
2986     printf "%s" "$*"
2987     echo -ne "\007"
2988   }
2989
2990   # note, this wont work:
2991   # x=$(mktemp); cp a $x
2992   # I havnt figured out why, bigger fish to fry.
2993   #
2994   # for titlebar.
2995   # condition from the screen man page i think.
2996   # note: duplicated in tx()
2997   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2998     trap 'settitle "$BASH_COMMAND"' DEBUG
2999   else
3000     trap DEBUG
3001   fi
3002
3003 fi
3004
3005 # * stuff that makes sense to be at the end
3006
3007
3008 # best practice
3009 unset IFS
3010
3011 if [[ -s "$HOME/.rvm/scripts/rvm" ]]; then
3012   # shellcheck disable=SC1091
3013   source "$HOME/.rvm/scripts/rvm"
3014 fi
3015
3016 # I had this idea to start a bash shell which would run an initial
3017 # command passed through this env variable, then continue on
3018 # interactively. But the use case I had in mind went away.
3019 #
3020 # if [[ $MY_INIT_CMD ]]; then
3021 #   "${MY_INIT_CMD[@]}"
3022 #   unset MY_INIT_CMD
3023 # fi
3024
3025 # ensure no bad programs appending to this file will have an affect
3026 return 0