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
 246 # * include files
 247
 248 if [[ -s $bashrc_dir/path-add-function ]]; then
 249   source $bashrc_dir/path-add-function
 250   if [[ $SSH_CLIENT ]]; then
 251     if grep -qF /home/iank/.iank/e/e /etc/exports &>/dev/null; then
 252       export EMACSDIR=/home/iank/.iank/e/e
 253     fi
 254     path-add $bashrc_dir
 255   fi
 256 fi
 257
 258 # if someone exported $SOE (stop on error), catch errors.
 259 #
 260 # Note, on debian this results in the following warning when in ssh,
 261 # hich I haven't figured out how to fix. It doesn't happen if we source
 262 # after the shell has started
 263 #
 264 # bash: /usr/share/bashdb/bashdb-main.inc: No such file or directory
 265 # bash: warning: cannot start debugger; debugging mode disabled
 266 if [[ $SOE ]]; then
 267   if [[ -e /a/bin/errhandle/err ]]; then
 268     source /a/bin/errhandle/err
 269   fi
 270 fi
 271
 272
 273 mysrc() {
 274   local path dir file
 275   path=$1
 276   dir=${path%/*}
 277   file=${path##*/}
 278   if [[ -s $path ]]; then
 279     # shellcheck disable=SC1090 # this is dynamic, shellcheck can't follow it.
 280     source $path
 281   elif [[ -s $bashrc_dir/$file ]]; then
 282     # shellcheck disable=SC1090 # this is dynamic, shellcheck can't follow it.
 283     source $bashrc_dir/$file
 284   fi
 285 }
 286
 287
 288 mysrc /a/bin/small-misc-bash/ll-function
 289 mysrc /a/bin/distro-functions/src/package-manager-abstractions
 290
 291 # things to remember:
 292 # ALT-C - cd into the selected directory
 293 # CTRL-T - Paste the selected file path into the command line
 294 #
 295 # good guide to some of its basic features is the readme file
 296 # https://github.com/junegunn/fzf
 297
 298 # if [[ -s /usr/share/doc/fzf/examples/key-bindings.bash ]]; then
 299 #   source /usr/share/doc/fzf/examples/key-bindings.bash
 300 # fi
 301
 302 # * functions
 303
 304
 305 # temporary functions
 306 y() {
 307   m "${@//spring/fall}"
 308 }
 309 h() {
 310   e "${@//spring/fall}"
 311 }
 312
 313
 314 ### begin FSF section ###
 315
 316 # Comments before functions are meant to be good useful
 317 # documentation. If they fail at that, please improve them or send Ian a
 318 # note.
 319
 320 ## copy bash completion
 321 #
 322 # It copies how the bash completion works from one command to other
 323 # commands. Generally just use within a .bashrc.
 324 #
 325 # Usage: ORIGINAL_COMMAND TARGET_COMMAND...
 326 #
 327 ccomp() {
 328   local c src
 329   src=$1
 330   shift
 331   if ! c=$(complete -p $src 2>/dev/null); then
 332     _completion_loader $src &>/dev/null ||:
 333     c=$(complete -p $src 2>/dev/null) || return 0
 334   fi
 335   # remove $src( .*|$)
 336   c=${c% "$src"}
 337   c=${c%% "$src" *}
 338   eval $c $*
 339 }
 340
 341 ## BEGIN functions to change directory better than cd ##
 342 #
 343 # The functions:
 344 #
 345 # c: acts like cd, but stores directory history: you could alias to cd if you wanted.
 346 # b: go back
 347 # f: go forward
 348 # cl: list recent directories and optionally choose one.
 349 #
 350 # Finer details you may want to skip:
 351 #
 352 # bl: print the list of back and forward directories.
 353 #
 354 # We keep 2 stacks of directories, forward and back. Unlike with a web
 355 # browser, the forward stack is not erased when going somewhere new.
 356 #
 357 # Recent directories are stored in ~/.cdirs.
 358 #
 359 declare -a _dir_forward _dir_back
 360 c() {
 361   # normally, the top of _dir_back is our current dir. if it isn't,
 362   # put it on there, except we don't want to do that when we
 363   # just launched a shell
 364   if [[ $OLDPWD ]]; then
 365     if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 366       _dir_back+=("$PWD")
 367     fi
 368   fi
 369   command cd "$@"
 370   if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 371     _dir_back+=("$PWD")
 372   fi
 373   echo "$PWD" >> ~/.cdirs
 374 }
 375 ccomp cd c
 376
 377 # back
 378 b() {
 379   local top_back
 380   if (( ${#_dir_back[@]} == 0 )); then
 381     echo "nothing left to go back to" >&2
 382     return 0
 383   fi
 384   top_back="${_dir_back[-1]}"
 385
 386   if [[ $top_back == "$PWD" ]] && (( ${#_dir_back[@]} == 1 )); then
 387     echo "already on last back entry" >&2
 388     return 0
 389   fi
 390
 391
 392   if [[ $top_back == "$PWD" ]]; then
 393     # add to dirf if not already there
 394     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$top_back" ]]; then
 395       _dir_forward+=("$top_back")
 396     fi
 397     unset "_dir_back[-1]"
 398     command cd "${_dir_back[-1]}"
 399   else
 400     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$PWD" ]]; then
 401       _dir_forward+=("$PWD")
 402     fi
 403     command cd "$top_back"
 404   fi
 405
 406   # Interesting feature, not sure I want it.
 407   # give us a peek at what is next in the list
 408   # if (( ${#_dir_back[@]} >= 2 )); then
 409   #   printf "%s\n" "${_dir_back[-2]}"
 410   # fi
 411   #
 412
 413   # c/b/f Implementation notes:
 414   #
 415   # The top of the back is $PWD
 416   # as long as the last directory change was due to c,b,or cl.
 417   #
 418   # Example of stack changes:
 419   #
 420   # a b c (d)
 421   ## back
 422   # a b (c)
 423   # d
 424   #back
 425   #a (b)
 426   #d c
 427   #back
 428   #(a)
 429   #d c b
 430   #forward
 431   #a (b)
 432   #d c
 433   #
 434   # a b c
 435   ## back
 436   # a b
 437   # (c)
 438   ## forward
 439
 440 }
 441 # forward
 442 f() {
 443   local top_forward
 444   if (( ${#_dir_forward[@]} == 0 )); then
 445     echo "no forward dir left" >&2
 446     return 0
 447   fi
 448   top_forward="${_dir_forward[-1]}"
 449   unset "_dir_forward[-1]"
 450   c "$top_forward"
 451
 452   # give us a peek at what is next in the list
 453   # if (( ${#_dir_forward[@]} )); then
 454   #   printf "%s\n" "${_dir_forward[-1]}"
 455   # fi
 456 }
 457 # cl = cd list
 458 cl() {
 459   local i line input start
 460   local -A buttondirs alines
 461   local -a buttons dirs lines
 462   buttons=( {a..z} {2..9} )
 463   if [[ ! -s ~/.cdirs ]]; then
 464     echo nothing in ~/.cdirs
 465     return 0
 466   fi
 467
 468   i=0
 469
 470   mapfile -t lines <~/.cdirs
 471   start=$(( ${#lines[@]} - 1 ))
 472
 473   # we have ~33 buttons as of this writing, so lets
 474   # prune down the history every once in a while.
 475   if (( start > 500 )); then
 476     tac ~/.cdirs | awk '!seen[$0]++' | head -n 200 | tac | sponge ~/.cdirs || [[ $? == 141 ]]
 477   fi
 478
 479   for (( j=start; j >= 0; j-- )); do
 480     line="${lines[$j]}"
 481     if [[ ! $line || ${alines[$line]} || ! -d "$line" || $line == "$PWD" || line == "$HOME"  ]]; then
 482       continue
 483     fi
 484     alines[$line]=t
 485     buttondirs[${buttons[i]}]="$line"
 486     printf "%s %s\n" ${buttons[i]} "$line"
 487     # the LINES bit is for when we have a short terminal, just dont print all
 488     # the directories. alternative would be to do something like less the list.
 489     if (( i == ${#buttons[@]} - 1 )) || { [[ $LINES ]] && (( i == LINES - 3 )); }; then
 490       break
 491     fi
 492     i=$(( i + 1 ))
 493   done
 494
 495   if (( i == 0 )); then
 496     echo "no dirs in ~/.cdirs"
 497     return 0
 498   fi
 499   read -r -N 1 input
 500   if [[ $input != $'\n' ]]; then
 501     c "${buttondirs[$input]}"
 502   fi
 503 }
 504 # bl = back list. lists the back and forward directories. i tend to
 505 # forget this exists and use cl instead.
 506 bl() {
 507   local start i j max
 508   max=10
 509   start=$(( ${#_dir_back[@]} - 1 ))
 510
 511   # cleanup possible repeating of pwd
 512   if (( start >= 0 )) && [[ ${_dir_back[$start]} == "$PWD" ]]; then
 513     start=$(( start - 1 ))
 514   fi
 515   j=1
 516   if (( start >= 0 )); then
 517     for (( i=start; i >= 0 ; i-- )); do
 518       printf "%s %s\n" $j ${_dir_back[i]}
 519       j=$(( j + 1 ))
 520       if (( j >= max )); then
 521         break
 522       fi
 523     done
 524   fi
 525
 526   max=10
 527   start=$(( ${#_dir_forward[@]} - 1 ))
 528
 529   # cleanup possible repeating of pwd
 530   if (( start >= 0 )) && [[ ${_dir_forward[$start]} == "$PWD" ]]; then
 531     start=$(( start - 1 ))
 532   fi
 533   if (( start < 0 )); then
 534     return 0
 535   fi
 536   echo --
 537   j=1
 538   for (( i=start; i >= 0 ; i-- )); do
 539     printf "%s %s\n" $j ${_dir_forward[i]}
 540     j=$(( j + 1 ))
 541     if (( j >= max )); then
 542       break
 543     fi
 544   done
 545 }
 546 ## END functions to change directory better than cd ##
 547
 548 # pee do. run args as a command with output copied to syslog.
 549 #
 550 # Usage: pd [-t TAG] COMMAND...
 551 #
 552 # -t TAG Override the tag in the syslog. The default is COMMAND with
 553 #        any path part is removed, eg. for /bin/cat the tag is cat.
 554 #
 555 # You can view the log via "journalctl -t TAG"
 556 pd() {
 557   local tag ret
 558   ret=0
 559   tag=${1##*/}
 560   case $1 in
 561     -t) tag="$2"; shift 2 ;;
 562   esac
 563   echo "PWD=$PWD command: $*" | logger -t $tag
 564   "$@" |& pee cat "logger -t $tag" || ret=$?
 565   echo "exited with status=$ret" | pee cat "logger -t $tag"
 566   # this avoids any err-catch
 567   (( ret == 0 )) || return $ret
 568 }
 569 ccomp time pd
 570
 571 # jdo = journal do. Run command as transient systemd service, tailing
 572 # its output in the journal until it completes.
 573 #
 574 # Usage: jdo COMMAND...
 575 #
 576 # Compared to pd: commands recognize this is a non-interactive shell.
 577 # The service is unaffected if our ssh connection dies, no need to run
 578 # in screen or tmux.
 579 #
 580 # Note: The last few lines of any existing entries for a unit by that
 581 # name will be output first, and there will be a few second delay at the
 582 # start of the command, and a second or so at the end.
 583 #
 584 # Note: Functions and aliases obviously won't work, we resolve the
 585 # command to a file.
 586 #
 587 # Note: requires running as root.
 588 jdo() {
 589   local cmd cmd_name jr_pid ret
 590   ret=0
 591   cmd="$1"
 592   shift
 593   if [[ $EUID != 0 ]]; then
 594     echo "jdo: error: rerun as root"
 595     return 1
 596   fi
 597   cmd_name=${cmd##*/}
 598   if [[ $cmd != /* ]]; then
 599     cmd=$(type -P "$cmd")
 600   fi
 601   # -q = quiet
 602   journalctl -qn2 -f -u "$cmd_name" &
 603   # Trial and error of time needed to avoid missing initial lines.
 604   # .5 was not reliable. 1 was not reliable. 2 was not reliable
 605   sleep 4
 606   jr_pid=$!
 607   systemd-run --unit "$cmd_name" --wait --collect "$cmd" "$@" || ret=$?
 608   # The sleep lets the journal output its last line
 609   # before the prompt comes up.
 610   sleep .5
 611   kill $jr_pid &>/dev/null ||:
 612   unset jr_pid
 613   fg &>/dev/null ||:
 614   # this avoids any err-catch
 615   (( ret == 0 )) || return $ret
 616 }
 617 ccomp time jdo
 618 #### end fsf section
 619
 620
 621 ..() { c ..; }
 622 ...() { c ../..; }
 623 ....() { c ../../..; }
 624 .....() { c ../../../..; }
 625 ......() { c ../../../../..; }
 626
 627 chere() {
 628   local f path
 629   for f; do
 630     path=$(readlink -e "$f")
 631     echo "cat >$path <<'EOF'"
 632     cat "$f"
 633     echo EOF
 634   done
 635 }
 636
 637
 638 # file cut copy and paste, like the text buffers :)
 639 # I havnt tested these.
 640 _fbufferinit() { # internal use
 641   ! [[ $my_f_tempdir ]] && my_f_tempdir="$(mktemp -d)"
 642   rm -rf "${my_f_tempdir:?}"/*
 643 }
 644 fcp() { # file cp
 645   _fbufferinit
 646   cp "$@" "$my_f_tempdir"/
 647 }
 648 fct() { # file cut
 649   _fbufferinit
 650   mv "$@" "$my_f_tempdir"/
 651 }
 652 fpst() { # file paste
 653   [[ $2 ]] && { echo too many arguments; return 1; }
 654   target=${1:-.}
 655   cp "$my_f_tempdir"/* "$target"
 656 }
 657
 658 _khfix_common() {
 659   local host ip port file key
 660   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" ||: )
 661   file=$(readlink -f ~/.ssh/known_hosts)
 662   if [[ ! $ip ]]; then
 663     echo "khfix: ssh failed"
 664     return 1
 665   fi
 666   if [[ $port != 22 ]]; then
 667     ip_entry="[$ip]:$port"
 668     host_entry="[$host]:$port"
 669   else
 670     ip_entry=$ip
 671     host_entry=$host
 672   fi
 673   if [[ $host != "$ip" ]]; then
 674     key=$(ssh-keygen -F "$host_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 675     if [[ $key ]]; then
 676       grep -Fv "$key" "$file" | sponge "$file"
 677     fi
 678   fi
 679   key=$(ssh-keygen -F "$ip_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 680   if [[ $key ]]; then
 681     grep -Fv "$key" "$file" | sponge "$file"
 682   fi
 683   ll ~/.ssh/known_hosts
 684   rootsshsync
 685 }
 686 khfix() { # known hosts fix
 687   _khfix_common "$@" || return 1
 688   ssh $1 :
 689 }
 690 khcopy() {
 691   _khfix_common "$@"
 692   ssh-copy-id $1
 693 }
 694
 695 # ya, hacky hardcoded hostnames in 2023. we could do better
 696 hssh-update() {
 697   local -a failed_hosts hosts
 698   case $HOSTNAME in
 699     sy|kd)
 700       hosts=(
 701         kd x3.office.fsf.org syw
 702       )
 703       ;;
 704     x3)
 705       hosts=(
 706         b8.nz sywg.b8.nz
 707       )
 708       ;;
 709   esac
 710   for host in ${hosts[@]}; do
 711     e $host
 712     if ! scp /b/fai/fai/config/files/usr/local/bin/hssh/IANK root@$host:/usr/local/bin/hssh; then
 713       failed_hosts+=($host)
 714     fi
 715   done
 716   if (( ${#failed_hosts[@]} >= 1 )); then
 717     echo failed_hosts=${failed_hosts[*]}
 718     return 1
 719   fi
 720 }
 721
 722 a() {
 723   local x
 724   x=$(readlink -nf "${1:-$PWD}")
 725   # yes, its kinda dumb that xclip/xsel cant do this in one invocation
 726   echo -n "$x" | xclip -selection clipboard
 727   echo -n "$x" | xclip
 728 }
 729
 730 # a1 = awk {print $1}
 731 for field in {1..20}; do
 732   eval a$field"() { awk '{print \$$field}'; }"
 733 done
 734 # h1 = head -n1
 735 for num in {1..9}; do
 736   eval h$num"() { head -n$num || [[ \$? == 141 ]]; }"
 737 done
 738
 739
 740 hexipv4() {
 741   # shellcheck disable=SC2046 disable=SC2001 disable=SC2183 # hacks, expected
 742   printf '%d.%d.%d.%d\n' $(echo $1 | sed 's/../0x& /g')
 743 }
 744
 745 vp9() {
 746   local f out outdir in fname origdir skip1
 747   origdir="$PWD"
 748   outdir=vp9
 749   skip1=false
 750   while [[ $1 == -* ]]; do
 751     case $1 in
 752       # if we got interrupted after 1st phase
 753       -2)
 754         skip1=true
 755         shift
 756         ;;
 757       --out)
 758         outdir=$2
 759         shift 2
 760         ;;
 761     esac
 762   done
 763   m mkdir -p $outdir
 764   # first pass only uses about 1 cpu, so run in parallel
 765   for f; do
 766     {
 767       fname="${f##*/f}"
 768       if [[ $f == /* ]]; then
 769         in="$f"
 770       else
 771         in=$origdir/$f
 772       fi
 773       out="$origdir/$outdir/$fname"
 774       mkdir -p /tmp/vp9/$fname
 775       cd /tmp/vp9/$fname
 776       if ! $skip1 && [[ ! -s ffmpeg2pass-0.log ]]; then
 777         # -nostdin or else wait causes ffmpeg to go into stopped state. dunno why, random stackoverflow answer.
 778         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
 779       fi
 780       if [[ -e $out ]]; then rm -f $out; fi
 781       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 $out
 782     } &
 783   done
 784   wait -f
 785   cd "$origdir"
 786 }
 787
 788 utcl() { # utc 24 hour time to local hour 24 hour time
 789   echo "print( ($1  $(date +%z | sed -r 's/..$//;s/^(-?)0*/\1/')) % 24)"|python3
 790 }
 791
 792 bwm() {
 793   s bwm-ng -T avg -d
 794 }
 795
 796
 797 # for running in a fai rescue. iank specific.
 798 kdrescue() {
 799   d=vgata-Samsung_SSD_850_EVO_2TB_S2RLNX0J502123D
 800   for f in $d vgata-Samsung_SSD_870_QVO_8TB_S5VUNG0N900656V; do
 801     cryptsetup luksOpen --key-file /p /dev/$f/root crypt-$f-root
 802     cryptsetup luksOpen --key-file /p /dev/$f/o crypt-$f-o
 803   done
 804   mount -o subvol=root_trisquelaramo /dev/mapper/crypt-$d-root /mnt
 805   mount -o subvol=a /dev/mapper/crypt-$d-root /mnt/a
 806   mount -o subvol=o /dev/mapper/crypt-$d-o /mnt/o
 807   mount -o subvol=boot_trisquelaramo /dev/sda2 /mnt/boot
 808   cd /mnt
 809   chrbind
 810 }
 811
 812
 813
 814
 815 c4() { c /var/log/exim4; }
 816
 817 caa() { git commit --amend --no-edit -a; }
 818
 819 cf() {
 820   for f; do
 821     hr
 822     echo "$f"
 823     hr
 824     cat "$f"
 825   done
 826 }
 827 caf() {
 828   # shellcheck disable=SC2033
 829   find -L "$@" -type f -not \( -name .svn -prune -o -name .git -prune \
 830        -o -name .hg -prune -o -name .editor-backups -prune \
 831        -o -name .undo-tree-history -prune \) \
 832        -exec bash -c '. ~/.bashrc; hr; echo "$1"; hr; cat "$1"' _ {} \; 2>/dev/null
 833
 834 }
 835 ccomp cat cf caf
 836
 837 calc() { echo "scale=3; $*" | bc -l; }
 838 # no having to type quotes, but also no command history:
 839 clc() {
 840   local x
 841   read -r x
 842   echo "scale=3; $x" | bc -l
 843 }
 844
 845 cam() {
 846   git commit -am "$*"
 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   # todo: patch emacs so it will look elsewhere. this is kinda sad:
1394   # https://emacs.stackexchange.com/questions/4253/how-to-start-emacs-with-a-custom-user-emacs-directory
1395
1396   local args gdb=false
1397
1398   if [[ $EMACSDIR ]]; then
1399     path-add "$EMACSDIR/lib-src" "$EMACSDIR/src"
1400   fi
1401
1402   if [[ $DISPLAY ]]; then
1403     args=-n
1404   fi
1405
1406   if (( $# == 0 )); then
1407     args+=" -c"
1408   fi
1409   # duplicate -c, but oh well
1410   if ! pgrep -u $EUID emacsclient; then
1411     if (( $# == 0 )) && type -p gdb &>/dev/null; then
1412       gdb=true
1413     else
1414       args+=" -c"
1415     fi
1416   fi
1417   if [[ $EMACSDIR ]]; then
1418     # Alter the path here, otherwise the nfs mount gets triggered on the
1419     # first path lookup when emacs is not being used.
1420     # shellcheck disable=SC2098 disable=SC2097 # false positive
1421     PATH="$EMACSDIR/lib-src:$EMACSDIR/src:$PATH" EHOME=$HOME HOME=$EMACSDIR m emacsclient -a "" $args "$@"
1422   else
1423     if $gdb; then
1424       # due to a bug, we cant debug from the start unless we get a new gdb
1425       # https://sourceware.org/bugzilla/show_bug.cgi?id=24454
1426       # m gdb -ex="set follow-fork-mode child" -ex=r -ex=quit --args emacs --daemon
1427       m emacsclient -a "" $args "$@"
1428       sleep 1
1429       cd "/a/opt/emacs-$(distro-name)$(distro-num)"
1430       s gdb -p "$(pgrep -f 'emacs --daemon')" -ex c
1431       cd -
1432     else
1433       m emacsclient -a "" $args "$@"
1434     fi
1435   fi
1436 }
1437
1438 # force terminal version
1439 gn() {
1440   g -n "$@"
1441 }
1442
1443 gmacs() {
1444   # quit will prompt if the program crashes.
1445   gdb -ex=r -ex=quit --args emacs "$@"; r;
1446 }
1447
1448 gdkill() {
1449   # kill the emacs daemon
1450   pk1 emacs --daemon
1451 }
1452
1453 gr() {
1454   grep -iIP --color=auto "$@" || return $?
1455 }
1456 grr() { # grep recursive
1457   # Don't return 1 on nonmatch because this is meant to be
1458   # interactive, not in a conditional.
1459   if [[ ${#@} == 1 ]]; then
1460     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" . || [[ $? == 1 ]]
1461   else
1462     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" || [[ $? == 1 ]]
1463   fi
1464 }
1465 ccomp grep gr grr
1466
1467 rg() { grr "$@"; }
1468 ccomp grep rg
1469
1470 # recursive everything. search for files/dirs and lines. rs = easy chars to press
1471 re() {
1472   local query
1473   query="$1"
1474   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1475        -o -name .hg -prune -o -name .editor-backups -prune \
1476        -o -name .undo-tree-history -prune \) 2>/dev/null | grep -iP --color=auto "$query"
1477   grr -m 5 "$@"
1478 }
1479
1480 # horizontal row. used to break up output
1481 hr() {
1482   local blocks
1483   # 180 is long enough.
1484   blocks=██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████
1485   printf "%s\n" "$(tput setaf 5 2>/dev/null ||:)${blocks:0:${COLUMNS:-180}}$(tput sgr0 2>/dev/null||:)"
1486 }
1487 # highlight
1488 hl() {
1489   local col input_len=0
1490   for arg; do
1491     input_len=$((input_len + 1 + ${#arg}))
1492   done
1493   col=$((60 - input_len))
1494   printf "\e[1;97;41m%s" "$*"
1495   if (( col > 0 )); then
1496     # shellcheck disable=SC2046 # needed to work as intended. a better way would be like hr above.
1497     printf "\e[1;97;41m \e[0m%.0s" $(eval echo "{1..${col}}")
1498   fi
1499   echo
1500 }
1501 hlm() { hl "$*";  "$@"; }
1502
1503 hrcat() { local f; for f; do [[ -f $f ]] || continue; hr; echo "$f"; cat "$f"; done }
1504
1505
1506 # get latest hub and run it
1507 # main command to use:
1508 # hub pull-request --no-edit
1509 # --no-edit means to use the first commit\'s message as the pull request message.
1510 # If that fails, try doing
1511 # hub pull-request --no-edit -b UPSTREAM_OWNER:branch
1512 # where branch is usually master. it does the pr against your current branch.
1513 #
1514 # On first use, you input username/pass and it gets an oath token so you dont have to repeat
1515 # it\'s at ~/.config/hub
1516 hub() {
1517   local up uptar updir p re
1518   # example https://github.com/github/hub/releases/download/v2.14.2/hub-linux-amd64-2.14.2.tgz
1519   up=$(wget -q -O- https://api.github.com/repos/github/hub/releases/latest | jq -r .assets[].browser_download_url | grep linux-amd64)
1520   re='[[:space:]]'
1521   if [[ ! $up || $up =~ $re ]]; then
1522     echo "failed to get good update url. got: $up"
1523   fi
1524   uptar=${up##*/}
1525   updir=${uptar%.tgz}
1526   if [[ ! -e /a/opt/$updir ]]; then
1527     rm -rf /a/opt/hub-linux-amd64*
1528     wget -P /a/opt $up
1529     tar -C /a/opt -zxf /a/opt/$uptar
1530     rm -f /a/opt/$uptar
1531   fi
1532   if ! which hub &>/dev/null; then
1533     sudo /a/opt/$updir/install
1534   fi
1535
1536   # save token across computers
1537   if [[ ! -L ~/.config/hub ]]; then
1538     if [[ -e ~/.config/hub  ]]; then
1539       mv ~/.config/hub /p/c/subdir_files/.config/
1540     fi
1541     if [[ -e /p/c/subdir_files/.config/hub ]]; then
1542       conflink
1543     fi
1544   fi
1545   command hub "$@"
1546 }
1547
1548 i() { git "$@"; }
1549 ccomp git i
1550
1551 # git status:
1552 # cvs -qn update
1553
1554 # git checkout FILE
1555 # cvs update -C FILE
1556
1557 # git pull
1558 # cvs up[date]
1559
1560 # potentially useful command translation
1561 # https://fling.seas.upenn.edu/~giesen/dynamic/wordpress/equivalent-commands-for-git-svn-and-cvs/
1562
1563 # importing cvs repo into git using git-cvs package:
1564 # /f/www $ /usr/lib/git-core/git-cvsimport -C /f/www-git
1565
1566 ic() {
1567   # fast commit all
1568   git commit -am "$*"
1569 }
1570
1571 ipp() {
1572   git pull
1573   git push
1574 }
1575
1576 ifn() {
1577   local glob
1578   glob="$1"
1579   shift
1580   find -L "$@" -not \( -name .svn -prune -o -name .git -prune \
1581        -o -name .hg -prune -o -name .editor-backups -prune \
1582        -o -name .undo-tree-history -prune \) -iname "*$glob*" 2>/dev/null
1583 }
1584
1585 ifh() {
1586   # insensitive find here. args are combined into the search string.
1587   # -L = follow symlinks
1588   find -L . -not \( -name .svn -prune -o -name .git -prune \
1589        -o -name .hg -prune -o -name .editor-backups -prune \
1590        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1591 }
1592
1593 ifd() {
1594   # insensitive find directory
1595   find -L . -type d -not \( -name .svn -prune -o -name .git -prune \
1596        -o -name .hg -prune -o -name .editor-backups -prune \
1597        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1598 }
1599
1600
1601 ipdrop() {
1602   sudo iptables -A INPUT -s $1 -j DROP
1603 }
1604
1605
1606 istext() {
1607   grep -Il "" "$@" &>/dev/null
1608 }
1609
1610 pst() {
1611   pstree -apnA
1612 }
1613
1614 # journalctl with times in the format the --since= and --until= options accept
1615 jrt() { journalctl -e -n100000 -o short-full "$@"; }
1616 jr() { journalctl -e -n100000 "$@" ; }
1617 jrf() { journalctl -n1000 -f "$@" ; }
1618 jru() {
1619   # the invocation id is "assigned each time the unit changes from an inactive
1620   # state into an activating or active state" man systemd.exec
1621   journalctl -e --no-tail -u exim4 _SYSTEMD_INVOCATION_ID="$(systemctl show -p InvocationID --value $1)"
1622 }
1623 ccomp journalctl jr jrf jru
1624
1625
1626
1627 l() {
1628   if [[ $PWD == /[iap] ]]; then
1629     command ls -A --color=auto -I lost+found "$@"
1630   else
1631     command ls -A --color=auto "$@"
1632   fi
1633 }
1634
1635 lcn() { locate -i "*$**"; }
1636
1637 lg() { LC_COLLATE=C.UTF-8 ll --group-directories-first "$@"; }
1638
1639 lt() { ll -tr "$@"; }
1640
1641 lld() { ll -d "$@"; }
1642
1643 ccomp ls l lg lt lld ll
1644
1645 # low recursively
1646 lowr() {
1647   local f dirs i a
1648   local -a all
1649   for dirs in false true; do
1650     for f; do
1651       if [[ -d $f ]]; then
1652         all=("$f"/**)
1653         # reverse the order to rename the nested dirs first.
1654         # note: 0 element is the dir itself
1655         for ((i=${#all[@]}-1; i>=1; i--)); do
1656           a="${all[i]}"
1657           if $dirs && [[ -d $a ]]; then
1658             # e dirs low "$a" # debug
1659             low "$a"
1660           elif ! $dirs && [[ ! -d $a && -e $a ]]; then
1661             # debug
1662             # e not dirs low "$a" # debug
1663             low "$a"
1664           fi
1665         done
1666       fi
1667       # just rename all the top level args on the second pass
1668       if $dirs; then
1669         # e final dirs low "$f" # debug
1670         low "$f"
1671       fi
1672     done
1673   done
1674 }
1675
1676 low() {  # make filenames lowercase, remove bad chars
1677   local arg new dir f
1678   for arg; do
1679     arg="${arg%%+(/)}" # remove trailing slashes. assumes we have extglob on.
1680     dir="${arg%/*}"
1681     if (( ${#dir} == ${#arg} )); then
1682       dir=.
1683     fi
1684     f="${arg##*/}"
1685     new="${f,,}" # downcase
1686     # shellcheck disable=SC2031 # seems like a shellcheck bug
1687     new="${new//[^a-zA-Z0-9._-]/_}" # sub bad chars
1688     new="${new#"${new%%[[:alnum:]]*}"}" # remove leading/trailing non-alnum
1689     new="${new%"${new##*[[:alnum:]]}"}"
1690     # remove bad underscores, like __ and _._
1691     new=$(echo $new | sed -r 's/__+/_/g;s/_+([.-])|([.-])_+/\1/g')
1692     safe_rename "$dir/$f" "$dir/$new" || return 1
1693   done
1694   return 0
1695 }
1696
1697 lower() { # make first letter of filenames lowercase.
1698   local x
1699   for x in "$@"; do
1700     if [[ ${x::1} == [A-Z] ]]; then
1701       y=$(tr '[:upper:]' '[:lower:]' <<<"${x::1}")"${x:1}"
1702       safe_rename "$x" "$y" || return 1
1703     fi
1704   done
1705 }
1706
1707
1708 k() { # history search
1709   grep -iP --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | tail -n 80 || [[ $? == 1 ]];
1710 }
1711 ks() { # history search with context
1712   # args are an extended regex used by sed
1713   history | sed -nr "h;s/^\s*(\S+\s+){4}//;/$*/{g;p}" | tail -n 80 || [[ $? == 1 ]];
1714 }
1715 ksu() { # history search unique
1716   grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | uniq || [[ $? == 1 ]];
1717 }
1718
1719 # todo: id like to do maybe a daily or hourly cronjob to
1720 # check that my history file size is increasing. Ive had it
1721 # inexplicably truncated in the past.
1722 histrm() {
1723   history -n
1724   HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/'
1725   read -r -p "press anything but contrl-c to delete"
1726   for entry in $(HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/ { print a }' | tac); do
1727     history -d $entry
1728   done
1729   history -w
1730 }
1731
1732 # history without the date
1733 histplain() {
1734   history "$@" | cut -d' ' -f 7-
1735 }
1736
1737 ccomp grep k ks ksu histrm
1738
1739
1740 make-targets() {
1741   # show make targets, via http://stackoverflow.com/questions/3063507/list-goals-targets-in-gnu-make
1742   make -qp | awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ {split($1,A,/ /);for(i in A)print A[i]}'
1743 }
1744
1745 mkc() {
1746   mkdir "$1"
1747   c "$1"
1748 }
1749 ccomp mkdir mkc
1750
1751 mkct() {
1752   mkc "$(mktemp -d)"
1753 }
1754 # mkdir the last arg, cp the rest into it
1755 mkcp() {
1756   mkdir -p "${@: -1}"
1757   cp "${@:1:$#-1}" "${@: -1}"
1758 }
1759 mkmv() {
1760   mkdir -p "${@: -1}"
1761   mv "${@:1:$#-1}" "${@: -1}"
1762 }
1763
1764 mkt() { # mkdir and touch file
1765   local path="$1"
1766   mkdir -p "$(dirname "$path")"
1767   touch "$path"
1768 }
1769
1770 # shellcheck disable=SC2032
1771 mkdir() { command mkdir -p "$@"; }
1772
1773 nags() {
1774   # https://github.com/HenriWahl/Nagstamon/issues/357
1775   if ! pgrep -f /usr/bin/dunst >/dev/null; then
1776     /usr/bin/dunst &
1777   fi
1778   /usr/bin/nagstamon &
1779 }
1780
1781 # profanity screen
1782 profsrc() {
1783   screen -RD -S profanity
1784 }
1785
1786 # i dont want to wait for konsole to exit...
1787 prof() {
1788   command prof &>/dev/null &
1789 }
1790 # self chat
1791 sc() {
1792   while read -r l; do
1793     printf '\033[1A\033[K'; printf "%s\n" "$l"| ts "%F %T" | tee -a /p/self-chat.log
1794   done
1795 }
1796
1797 nmt() {
1798   # cant use s because sudo -i doesnt work for passwordless sudo command
1799   case $EUID in
1800     0)
1801       sudo nmtui-connect "$@"
1802       ;;
1803     *)
1804       nmtui-connect "$@"
1805       ;;
1806   esac
1807 }
1808
1809
1810 ngset() {
1811   if shopt nullglob >/dev/null; then
1812     ngreset=false
1813   else
1814     shopt -s nullglob
1815     ngreset=true
1816   fi
1817 }
1818 ngreset() {
1819   if $ngreset; then
1820     shopt -u nullglob
1821   fi
1822 }
1823
1824 nopanic() {
1825   # shellcheck disable=SC2024
1826   ngset
1827   for f in /var/log/exim4/paniclog /var/log/exim4/*panic; do
1828     base=${f##*/}
1829     if [[ -s $f ]]; then
1830       echo ================== $f =============
1831       s tee -a /var/log/exim4/$base-archive <$f
1832       s truncate -s0 $f
1833     fi
1834   done
1835   ngreset
1836 }
1837
1838
1839 ping() { command ping -O "$@"; }
1840 p8() { ping "$@" 8.8.8.8; }
1841 p6() { ping6 "$@" 2001:4860:4860::8888; }
1842
1843 pkx() { # package extract
1844   local pkg cached tmp f
1845   c "$(mktemp -d)"
1846   pkg=$1
1847   # shellcheck disable=SC2012
1848   cached=$(ls -t /var/cache/apt/archives/${pkg}_* | tail -n1 2>/dev/null) ||:
1849   if [[ $cached ]]; then
1850     m cp $cached .
1851   else
1852     m aptitude download $pkg || return 1
1853   fi
1854   tmp=(*); f=${tmp[0]} # only 1 expected
1855   m ex $f
1856   m rm -f $f
1857 }
1858
1859 # pgrep and kill
1860 pk1() {
1861   local tmpf
1862   local -a pids
1863   tmpf=$(pgrep -f "$*")
1864   mapfile -t pids <<<"$tmpf"
1865   case ${#pids[@]} in
1866     1)
1867       # shellcheck disable=SC2128
1868       {
1869         ps -F ${pids[0]}
1870         m kill ${pids[0]}
1871       }
1872       ;;
1873     0) echo "no pid found" ;;
1874     *)
1875       ps -F ${pids[@]}
1876       ;;
1877   esac
1878 }
1879
1880 psg () {
1881   local x y help
1882   help="Usage: psg [--help] GREP_ARGS
1883 grep ps and output in a nice format"
1884   if [[ $1 == --help ]]; then
1885     echo "$help"
1886     return
1887   fi
1888   x=$(ps -eF)
1889   # final grep is because some commands tend to have a lot of trailing spaces
1890   y=$(echo "$x" | grep -iP "$@" | grep -o '.*[^ ]') ||:
1891   if [[ $y ]]; then
1892     echo "$x" | head -n 1 || [[ $? == 141 ]]
1893     echo "$y"
1894   fi
1895 }
1896
1897 pubip() { curl -4s https://icanhazip.com; }
1898 pubip6() { curl -6s https://icanhazip.com; }
1899 whatismyip() { pubip; }
1900
1901
1902 q() { # start / launch a program in the backround and redir output to null
1903   "$@" &> /dev/null &
1904 }
1905
1906 # shellcheck disable=SC2120
1907 r() {
1908   if [[ $HISTFILE ]]; then
1909     history -a # save history
1910   fi
1911   trap ERR # this avoids a segfault
1912   exit ${1:0}
1913   # i had this redir, not sure why
1914   #  exit "$@" 2>/dev/null
1915 }
1916
1917 # scp is insecure and deprecated.
1918 scp() {
1919   rsync -Pt --inplace "$@"
1920 }
1921 ccomp rsync scp
1922
1923 randport() {
1924   # available high ports are 1024-65535,
1925   # but lets skip things that are more likely to be in use
1926   python3 <<'EOF'
1927 import secrets
1928 print(secrets.SystemRandom().randrange(10002,65500))
1929 EOF
1930 }
1931
1932 # reapply bashrc
1933 reb() {
1934   # shellcheck disable=SC1090 # expected to not follow
1935   source ~/.bashrc
1936 }
1937
1938 rl() {
1939   readlink -f "$@"
1940 }
1941 ccomp readlink rl
1942
1943 rsd() {
1944   # rsync, root is required to keep permissions right.
1945   # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
1946     #                                   --no-times --delete
1947   # basically, make an exact copy, use checksums instead of file times to be more accurate
1948   rsync -ahvic --delete "$@"
1949 }
1950 rsa() {
1951   # like rlu, but dont delete files on the target end which
1952   # do not exist on the original end.
1953   rsync -ahvic "$@"
1954 }
1955 rst() {
1956   # rl without preserving modification time.
1957   rsync -ahvic --delete --no-t "$@"
1958 }
1959 # [RSYNC_OPTS] HOST PATH
1960 rsu() {
1961   # eg. rsu -opts frodo /testpath
1962   # relative paths will expanded with readlink -f.
1963   opts=("${@:1:$#-2}") #  1 to last -2
1964   path="${*:$#}" # last
1965   host="${*:$#-1:1}" # last -1
1966   if [[ $path == .* ]]; then
1967     path=$(readlink -f $path)
1968   fi
1969   m rsync -ahvi --relative --no-implied-dirs "${opts[@]}" "$path" "root@$host:/";
1970 }
1971 ccomp rsync rsd rsa rst rsu
1972
1973 # find programs listening on a port
1974 ssp() {
1975   local port=$1
1976   # to figure out these args, i had to look at the man page from git version, as of 2022-04.
1977   s ss -lpn state listening sport = $port
1978 }
1979
1980 resolvcat() {
1981   local f
1982   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1983     m s nscd -i hosts
1984   fi
1985   f=/etc/resolv.conf
1986   echo $f:;  ccat $f
1987   hr; s ss -lpn sport = 53
1988   if systemctl is-enabled dnsmasq &>/dev/null || [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1989     # this will fail is dnsmasq is failed
1990     hr; m ser status dnsmasq | cat || :
1991     f=/etc/dnsmasq.conf
1992     hr; echo $f:;  ccat $f
1993     hr; m grr '^ *(servers-file|server) *=|^ *no-resolv *$' /etc/dnsmasq.conf /etc/dnsmasq.d
1994     f=/etc/dnsmasq-servers.conf
1995     hr; echo $f:;  ccat $f
1996   fi
1997   hr
1998   echo /etc/nsswitch.conf:
1999   grep '^ *hosts:' /etc/nsswitch.conf
2000   if systemctl is-enabled systemd-resolved &>/dev/null || [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
2001     hr; m ser status systemd-resolved | cat || :
2002     hr; m resolvectl status | cat
2003   fi
2004
2005 }
2006 rcat() {
2007   resolvcat | less
2008 }
2009 reresolv() {
2010   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
2011     m ser stop nscd
2012     sleep .5
2013     m ser start nscd
2014     m sudo nscd -i hosts
2015   fi
2016   if [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
2017     m sudo systemctl restart dnsmasq
2018   fi
2019   if [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
2020     m sudo systemctl restart systemd-resolved
2021   fi
2022   if type -P resolvectl &>/dev/null; then
2023     resolvectl flush-caches
2024   fi
2025 }
2026
2027 # add annoyingly long argument which should be the default
2028 sedi() {
2029   sed -i --follow-symlinks "$@"
2030 }
2031
2032 rmstrips() {
2033   ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
2034 }
2035
2036 urun () {
2037   umask $1
2038   shift
2039   "$@"
2040 }
2041 sudo () {
2042   command sudo "$@" || return $?
2043   DID_SUDO=true
2044 }
2045 s() {
2046   # background
2047   # I use a function because otherwise we cant use in a script,
2048   # cant assign to variable.
2049   #
2050   # note: gksudo is recommended for X apps because it does not set the
2051   # home directory to the same, and thus apps writing to ~ fuck things up
2052   # with root owned files.
2053   #
2054   if [[ $EUID != 0 || $1 == -* ]]; then
2055     # shellcheck disable=SC2034
2056     SUDOD="$PWD" command sudo -i "$@"
2057     DID_SUDO=true
2058   else
2059     "$@"
2060   fi
2061 }
2062 sb() { # sudo bash -c
2063   # use sb instead of s is for sudo redirections,
2064   # eg. sb 'echo "ok fine" > /etc/file'
2065   # shellcheck disable=SC2034
2066   local SUDOD="$PWD"
2067   sudo -i bash -c "$@"
2068 }
2069 # secret sudo
2070 se() { s urun 0077 "$@"; }
2071 ccomp sudo s sb se
2072
2073 safe_rename() { # warn and dont rename if file exists.
2074   # mv -n exists, but it\'s silent
2075   if [[ $# != 2 ]]; then
2076     echo safe_rename error: $# args, need 2 >&2
2077     return 1
2078   fi
2079   if [[ $1 != "$2" ]]; then # yes, we want to silently ignore this
2080     if [[ -e $2 || -L $2 ]]; then
2081       echo "Cannot rename $1 to $2 as it already exists."
2082     else
2083       mv -vi "$1" "$2"
2084     fi
2085   fi
2086 }
2087
2088
2089 sd() {
2090   sudo dd status=none of="$1"
2091 }
2092
2093 ser() {
2094   if type -p systemctl &>/dev/null; then
2095     s systemctl "$@"
2096   else
2097     if (( $# >= 3 )); then
2098       echo iank: ser expected 2 or less arguments
2099       return 1
2100     fi
2101     s service $2 $1
2102   fi
2103 }
2104 serstat() {
2105   systemctl -n 40 status "$@"
2106 }
2107
2108 seru() { systemctl --user "$@"; }
2109 # like restart, but do nothing if its not already started
2110 srestart() {
2111   local service=$1
2112   if [[ $(s systemctl --no-pager show -p ActiveState $service ) == ActiveState=active ]]; then
2113     systemctl restart $service
2114   fi
2115 }
2116
2117 setini() { # set a value in a .ini style file
2118   key="$1" value="$2" section="$3" file="$4"
2119   if [[ -s $file ]]; then
2120     sed -ri -f - "$file" <<EOF
2121 # remove existing keys
2122 / *\[$section\]/,/^ *\[[^]]+\]/{/^\s*${key}[[:space:]=]/d}
2123 # add key
2124 /^\s*\[$section\]/a $key=$value
2125 # from section to eof, do nothing
2126 /^\s*\[$section\]/,\$b
2127 # on the last line, if we haven't found section yet, add section and key
2128 \$a [$section]\\
2129 $key=$value
2130 EOF
2131   else
2132     cat >"$file" <<EOF
2133 [$section]
2134 $key=$value
2135 EOF
2136   fi
2137 }
2138
2139 sgo() { # service go
2140   service=$1
2141   ser restart $service || return 1
2142   if type -p systemctl &>/dev/null; then
2143     ser enable $service
2144   fi
2145 }
2146 soff () {
2147   for service; do
2148     # ignore services that dont exist
2149     if systemctl cat $service &>/dev/null; then
2150       ser stop $service;
2151       ser disable $service
2152     fi
2153   done
2154 }
2155
2156 sgu() {
2157   systemctl list-unit-files | rg "$@"
2158 }
2159
2160
2161 sk() {
2162   # disable a warning with:
2163   # shellcheck disable=SC2206 # reasoning
2164
2165   # see bash-template/style-guide.md for justifications
2166
2167   local quotes others
2168   quotes=2048,2068,2086,2206,2254
2169   others=2029,2032,2033,2054,2164,
2170   shellcheck -W 999 -x -e $quotes,$others "$@" || return $?
2171 }
2172 # sk with quotes. For checking scripts that we expect to take untrusted
2173 # input in order to verify we quoted vars.
2174 skq() {
2175   local others
2176   others=2029,2033,2054,2164
2177   shellcheck -W 999 -x -e $others "$@" || return $?
2178 }
2179
2180 skgit() {
2181   local f
2182   for f in $(i s | awk '$1 == "modified:" {print $2}'); do
2183     if [[ $(head -n1 "$f") == '#!/bin/bash'* ]]; then
2184       sk $f ||:
2185     fi
2186   done
2187 }
2188
2189 # sl: ssh, but firsh rsync our bashrc and related files to a special
2190 # directory on the remote host if needed.
2191
2192 # Some environment variables and files need to be setup for this to work
2193 # (mine are set at the beginning of this file)
2194
2195 # SL_FILES_DIR: Environment variable. Path to folder which should at
2196 # least have a .bashrc file or symlink. This dir will be rsynced to ~ on
2197 # remote hosts (top level symlinks are resolved) unless the host already
2198 # has a $SL_FILES_DIR/.bashrc. In that case, we assume it is a host you
2199 # control and sync files to separately and already has the ~/.bashrc you
2200 # want. The remote bash will also take its .inputrc config from this
2201 # folder (default of not existing is fine). Mine looks like this:
2202 # https://iankelling.org/git/?p=distro-setup;a=tree;f=sl/.iank
2203
2204 # SL_INFO_DIR: Environment variable. This folder stores info about what
2205 # we detected on the remote system and when we last synced. It will be created
2206 # if it does not exist. Sometimes you may want to forget about a
2207 # remote system, you can use sl --rsync, or the function for that slr
2208 # below.
2209
2210 # SL_TEST_CMD: Env var. Meant to be used to vary the files synced
2211 # depending on the remote host. Run this string on the remote host the
2212 # first time sl is run (or if we run slr). The result is passed to
2213 # SL_TEST_HOOK. For example,
2214 # export SL_TEST_CMD=". /etc/os-release ; echo \${VERSION//[^a-zA-Z0-9]/}"
2215
2216 # SL_TEST_HOOK: Env var. It is run as $SL_TEST_HOOK. This can set
2217 # $SL_FILES_DIR to vary the files synced.
2218
2219 # SL_RSYNC_ARGS: Env var. String of arguments passed to rsync. For
2220 # example to exclude files within a directory. Note, excluded
2221 # files wont be deleted on rsync, you can add --delete-excluded
2222 # to the rsync command if that is desired.
2223
2224 # SL_SSH_ARGS: Env var. Default arguments passed to ssh.
2225
2226 # For when ~/.bashrc is already customized on the remote server, you
2227 # might find it problematic that ~/.bashrc is sourced for ALL ssh
2228 # commands, even in scripts. This paragraph is all about that. bash
2229 # scripts dont source ~/.bashrc, but call ssh in scripts and you get
2230 # ~/.bashrc. You dont want this. .bashrc is meant for interactive shells
2231 # and if you customize it, probably has bugs from time to time. This is
2232 # bad. Here's how I fix it. I have a special condition to "return" in my
2233 # .bashrc for noninteractive ssh shells (copy that code). Then use this
2234 # function or similar that passes LC_USEBASHRC=t when sshing and I want
2235 # my bashrc. Also, I don't keep most of my bashrc in .bashrc, i source a
2236 # separate file because even if I return early on, the whole file gets
2237 # parsed which can fail if there is a syntax error.
2238 sl() {
2239   # Background on LC_USEBASHRC var (no need to read if you just want to
2240   # use this function): env variables sent across ssh are strictly
2241   # limited, but we get LC_* at least in debian based machines, so we
2242   # just make that * be something no normal program would use. Note, on
2243   # hosts that dont allow LC_* I start an inner shell with LC_USEBASHRC
2244   # set, and the inner shell also allows running a nondefault
2245   # .bashrc. This means the outer shell still ran the default .bashrc,
2246   # but that is the best we can do.
2247
2248   local now args remote dorsync haveinfo tmpa sshinfo tmp tmp2 type info_sec force_rsync \
2249         sync_dirname testcmd extra_info testbool files_sec sl_test_cmd sl_test_hook
2250   declare -a args tmpa
2251
2252   args=($SL_SSH_ARGS)
2253
2254   # ssh [-1246Antivivisectionist] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port]
2255   # [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11] [-i identity_file] [-L address]
2256   # [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port] [-Q query_option]
2257   # [-R address] [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]] [user@]hostname
2258   # [command]
2259
2260   # ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
2261   # [-D [bind_address:]port] [-E log_file] [-e escape_char]
2262   # [-F configfile] [-I pkcs11] [-i identity_file]
2263   # [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
2264   # [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address]
2265   # [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
2266
2267   force_rsync=false
2268   if [[ $1 == --rsync ]]; then
2269     force_rsync=true
2270     shift
2271   fi
2272   # shellcheck disable=SC2153 # intentional
2273   sl_test_cmd=$SL_TEST_CMD
2274   # shellcheck disable=SC2153 # intentional
2275   sl_test_hook=$SL_TEST_HOOK
2276   # shellcheck disable=SC2153 # intentional
2277   sl_rsync_args=$SL_RSYNC_ARGS
2278   while [[ $1 ]]; do
2279     case "$1" in
2280       --rsync)
2281         force_rsync=true
2282         ;;
2283       --sl-test-cmd)
2284         sl_test_cmd="$2"
2285         shift
2286         ;;
2287       --sl-test-hook)
2288         sl_test_hook="$2"
2289         shift
2290         ;;
2291       --sl-rsync-args)
2292         sl_rsync_args="$2"
2293         shift
2294         ;;
2295       *)
2296         break
2297         ;;
2298     esac
2299     shift
2300   done
2301
2302   while [[ $1 ]]; do
2303     case "$1" in
2304       # note we dont support things like -4oOption
2305       -[46AaCfGgKkMNnqsTtVvXxYy]*)
2306         args+=("$1"); shift
2307         ;;
2308       -[bcDEeFIiJLlmOopQRSWw]*)
2309         # -oOption etc is valid
2310         if (( ${#1} >= 3 )); then
2311           args+=("$1"); shift
2312         else
2313           args+=("$1" "$2"); shift 2
2314         fi
2315         ;;
2316       *)
2317         break
2318         ;;
2319     esac
2320   done
2321   remote="$1"
2322   if [[ ! $remote ]]; then
2323     echo $0: error hostname required >&2
2324     return 1
2325   fi
2326   shift
2327
2328   if [[ ! $SL_INFO_DIR  ]]; then
2329     echo 'error: missing SL_INFO_DIR env var' >&2
2330     return 1
2331   fi
2332
2333   dorsync=false
2334   haveinfo=false
2335   tmpa=($SL_INFO_DIR/???????????"$remote")
2336   sshinfo=${tmpa[0]}
2337   if [[ -e $sshinfo ]]; then
2338     if $force_rsync; then
2339       rm -f $sshinfo
2340     else
2341       haveinfo=true
2342     fi
2343   fi
2344   if $haveinfo; then
2345     tmp=${sshinfo[0]##*/}
2346     tmp2=${tmp::11}
2347     type=${tmp2: -1}
2348     extra_info=$(cat $sshinfo)
2349   else
2350     # we test for string to know ssh succeeded
2351     testbool="test -e $SL_FILES_DIR/.bashrc -a -L .bashrc -a -v LC_USEBASHRC"
2352     testcmd="if $testbool; then printf y; else printf n; fi"
2353     if ! tmp=$(LC_USEBASHRC=y command ssh "${args[@]}" "$remote" "$testcmd; $sl_test_cmd"); then
2354       echo failed sl test. doing plain ssh -v
2355       command ssh -v "${args[@]}" "$remote"
2356     fi
2357     if [[ $tmp == y* ]]; then
2358       type=a
2359     else
2360       dorsync=true
2361       type=b
2362     fi
2363     extra_info="${tmp:1}"
2364   fi
2365   if [[ $sl_test_hook ]]; then
2366     RSYNC_RSH="ssh ${args[*]}" $sl_test_hook "$extra_info" "$remote"
2367   fi
2368
2369   if $haveinfo && [[ $type == b ]]; then
2370     info_sec=${tmp::10}
2371     read -r files_sec _ < <(find -L $SL_FILES_DIR -printf "%T@ %p\n" | sort -nr || [[ $? == 141 || ${PIPESTATUS[0]} == 32 ]]  )
2372     files_sec=${files_sec%%.*}
2373     if (( files_sec > info_sec )); then
2374       dorsync=true
2375       rm -f $sshinfo
2376     fi
2377   fi
2378
2379   sync_dirname=${SL_FILES_DIR##*/}
2380
2381   if [[ ! $SL_FILES_DIR  ]]; then
2382     echo 'error: missing SL_FILES_DIR env var' >&2
2383     return 1
2384   fi
2385
2386   if $dorsync; then
2387     RSYNC_RSH="ssh ${args[*]}" m rsync -rptL --delete $sl_rsync_args $SL_FILES_DIR "$remote":
2388   fi
2389   if $dorsync || ! $haveinfo; then
2390     sshinfo=$SL_INFO_DIR/$EPOCHSECONDS$type"$remote"
2391     [[ -e $SL_INFO_DIR ]] || mkdir -p $SL_INFO_DIR
2392     printf "%s\n" "$extra_info" >$sshinfo
2393     chmod 666 $sshinfo
2394   fi
2395   if [[ $type == b ]]; then
2396     if (( ${#@} )); then
2397       # Theres a couple ways to pass arguments, im not sure whats best,
2398       # but relying on bash 4.4+ escape quoting seems most reliable.
2399       command ssh "${args[@]}" "$remote" \
2400               LC_USEBASHRC=t bash -c '.\ '$sync_dirname'/.bashrc\;"\"\$@\""' bash ${@@Q}
2401     elif [[ ! -t 0 ]]; then
2402       # This case is when commands are being piped to ssh.
2403       # Normally, no bashrc gets sourced.
2404       # But, since we are doing all this, lets source it because we can.
2405       cat <(echo . $sync_dirname/.bashrc) - | command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2406     else
2407       command ssh -t "${args[@]}" "$remote" LC_USEBASHRC=t INPUTRC=$sync_dirname/.inputrc bash --rcfile $sync_dirname/.bashrc
2408     fi
2409   else
2410     if [[ -t 0 ]]; then
2411       LC_USEBASHRC=t command ssh "${args[@]}" "$remote" ${@@Q}
2412     else
2413       command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2414     fi
2415   fi
2416   # this function inspired from https://github.com/Russell91/sshrc
2417 }
2418
2419 slr() {
2420   sl --rsync "$@"
2421 }
2422 sss() { # ssh solo
2423   sl -oControlMaster=no -oControlPath=/ "$@"
2424 }
2425 # kill off old shared socket then ssh
2426 ssk() {
2427   m ssh -O exit "$@" || [[ $? == 255 ]]
2428   m sl "$@"
2429 }
2430 ccomp ssh sl slr sss ssk
2431 # plain ssh
2432 ssh() {
2433   if [[ $TERM == alacritty || $TERM == xterm-kitty ]]; then
2434     TERM=xterm-256color LC_USEBASHRC=t command ssh "$@"
2435   else
2436     LC_USEBASHRC=t command ssh "$@"
2437   fi
2438 }
2439
2440
2441 slog() {
2442   # log with script. timing is $1.t and script is $1.s
2443   # -l to save to ~/typescripts/
2444   # -t to add a timestamp to the filenames
2445   local logdir do_stamp arg_base
2446   (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
2447   logdir="/a/dt/"
2448   do_stamp=false
2449   while getopts "lt" option
2450   do
2451     case $option in
2452       l) arg_base=$logdir ;;
2453       t) do_stamp=true ;;
2454       *)
2455         echo error: bad option
2456         return 1
2457         ;;
2458     esac
2459   done
2460   shift $((OPTIND - 1))
2461   arg_base+=$1
2462   [[ -e $logdir ]] || mkdir -p $logdir
2463   $do_stamp && arg_base+=$(date +%F.%T%z)
2464   script -t $arg_base.s 2> $arg_base.t
2465 }
2466 splay() { # script replay
2467   #logRoot="$HOME/typescripts/"
2468   #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
2469   scriptreplay "$1.t" "$1.s"
2470 }
2471
2472 sr() {
2473   # sudo redo. be aware, this command may not work right on strange distros or earlier software
2474   if [[ $# == 0 ]]; then
2475     sudo -E bash -c -l "$(history -p '!!')"
2476   else
2477     echo this command redos last history item. no argument is accepted
2478   fi
2479 }
2480
2481 srm () {
2482   # with -ll, less secure but faster.
2483   command srm -ll "$@"
2484 }
2485
2486 srun() {
2487   scp $2 $1:/tmp
2488   ssh $1 "/tmp/${2##*/}" "$(printf "%q\n" "${@:2}")"
2489 }
2490
2491
2492 swap() {
2493   local tmp
2494   tmp=$(mktemp)
2495   mv $1 $tmp
2496   mv $2 $1
2497   mv $tmp $2
2498 }
2499
2500 tclock() { # terminal clock
2501   local x
2502   clear
2503   date +%l:%_M
2504   len=60
2505   # this goes to full width
2506   #len=${1:-$((COLUMNS -7))}
2507   x=1
2508   while true; do
2509     if (( x == len )); then
2510       end=true
2511       d="$(date +%l:%_M)   "
2512     else
2513       end=false
2514       d=$(date +%l:%M:%_S)
2515     fi
2516     echo -en "\r"
2517     echo -n "$d"
2518     for ((i=0; i<x; i++)); do
2519       if (( i % 6 )); then
2520         echo -n _
2521       else
2522         echo -n .
2523       fi
2524     done
2525     if $end; then
2526       echo
2527       x=1
2528     else
2529       x=$((x+1))
2530     fi
2531     sleep 5
2532   done
2533 }
2534
2535
2536 te() {
2537   # test existence / exists
2538   local ret=0
2539   for x in "$@"; do
2540     [[ -e "$x" || -L "$x" ]] || ret=1
2541   done
2542   return $ret
2543 }
2544
2545 psoff() {
2546   # normally, i would just execute these commands in the function.
2547   # however, DEBUG is not inherited, so we need to run it outside a function.
2548   # And we want to run set -x afterwards to avoid spam, so we cram everything
2549   # in here, and then it will run after this function is done.
2550   # # set as array to satisfy shellcheck, but it is equivalent to setting it as non-array
2551   PROMPT_COMMAND=('trap DEBUG; unset PROMPT_COMMAND; PS1="\w \$ "')
2552 }
2553 pson() {
2554   PROMPT_COMMAND=(prompt-command)
2555   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2556     trap 'settitle "$BASH_COMMAND"' DEBUG
2557   fi
2558 }
2559
2560 # prometheus node curl
2561 pnodecurl() {
2562   local host
2563   host=${1:-127.0.0.1}
2564   s curl --cert-type PEM --cert /etc/prometheus/ssl/prometheus_cert.pem --key /etc/prometheus/ssl/prometheus_key.pem --cacert /etc/prometheus/ssl/prom_node_cert.pem --resolve prom_node:9100:$host -v https://prom_node:9100/metrics
2565 }
2566
2567 tx() { # toggle set -x, and the prompt so it doesnt spam
2568   if [[ $- == *x* ]]; then
2569     set +x
2570     pson
2571   else
2572     psoff
2573   fi
2574 }
2575
2576 psnetns() {
2577   # show all processes in the network namespace $1.
2578   # blank entries appear to be subprocesses/threads
2579   local x netns
2580   netns=$1
2581   ps -w | head -n 1
2582   sudo find -L /proc/[1-9]*/task/*/ns/net -samefile /run/netns/$netns | cut -d/ -f5 | \
2583     while read -r l; do
2584       x=$(ps -w --no-headers -p $l);
2585       if [[ $x ]]; then echo "$x"; else echo $l; fi;
2586     done
2587 }
2588 nonet() {
2589   if ! s ip netns list | grep -Fx nonet &>/dev/null; then
2590     s ip netns add nonet
2591   fi
2592   sudo -E env /sbin/ip netns exec nonet sudo -E -u iank /bin/bash
2593 }
2594
2595 m() { printf "%s\n" "$*";  "$@"; }
2596
2597 # update file. note: duplicated in mail-setup.
2598 # updates $ur u result to true or false
2599 # updates $reload to true if file updated is in /etc/systemd/system
2600 u() {
2601   local tmp tmpdir dest="$1"
2602   local base="${dest##*/}"
2603   local dir="${dest%/*}"
2604   if [[ $dir != "$base" ]]; then
2605     # dest has a directory component
2606     mkdir -p "$dir"
2607   fi
2608   # shellcheck disable=SC2034 # see comment at top of function
2609   ur=false # u result
2610   tmpdir="$(mktemp -d)"
2611   cat >$tmpdir/"$base"
2612   tmp=$(rsync -ic $tmpdir/"$base" "$dest")
2613   if [[ $tmp ]]; then
2614     printf "%s\n" "$tmp"
2615     # shellcheck disable=SC2034 # see comment at top of function
2616     ur=true
2617     if [[ $dest == /etc/systemd/system/* ]]; then
2618       # shellcheck disable=SC2034 # see comment at top of function
2619       reload=true
2620     fi
2621   fi
2622   rm -rf $tmpdir
2623 }
2624
2625
2626 uptime() {
2627   if type -p uprecords &>/dev/null; then
2628     uprecords -B
2629   else
2630     command uptime
2631   fi
2632 }
2633
2634 virshrm() {
2635   for x in "$@"; do virsh destroy "$x"; virsh undefine "$x"; done
2636 }
2637
2638 vm-set-listen(){
2639   local t
2640   t=$(mktemp)
2641   local vm=$1
2642   local ip=$2
2643   sudo virsh dumpxml $vm | sed -r "s/(<listen.*address=')([^']+)/\1$ip/" | \
2644     sed -r "s/listen='[^']+/listen='$ip/"> $t
2645   sudo virsh undefine $vm
2646   sudo virsh define $t
2647 }
2648
2649
2650 vmshare() {
2651   vm-set-listen $1 0.0.0.0
2652 }
2653
2654
2655 vmunshare() {
2656   vm-set-listen $1 127.0.0.1
2657 }
2658
2659 myiwscan() {
2660   # find input, copy to pattern space, when we find the first field, print the copy in different order without newlines.
2661   # instead of using labels, we could just match a line and group, eg: /signal:/,{s/signal:(.*)/\1/h}
2662   sudo iw dev wls1 scan | sed -rn  "
2663 s/^\Wcapability: (.*)/\1/;Ta;h;b
2664 :a;s/^\Wsignal: -([^.]+).*/\1/;Tb;H;b
2665 # padded to min width of 20
2666 :b;s/\WSSID: (.*)/\1                    /;T;s/^(.{20}(.*[^ ])?) */\1/;H;g;s/(.*)\n(.*)\n(.*)/\2 \3  \1/gp;b
2667 "|sort -r
2668 }
2669
2670 # Run script by copying it to a temporary location first,
2671 # and changing directory, so we don't have any open
2672 # directories or files that could cause problems when
2673 # remounting.
2674 zr() {
2675   local tmp
2676   tmp=$(type -p "$1")
2677   if [[ $tmp ]]; then
2678     cd "$(mktemp -d)"
2679     cp -a "$tmp" .
2680     shift
2681     ./"${tmp##*/}" "$@"
2682   else
2683     "$@"
2684   fi
2685 }
2686
2687
2688 # * spark
2689 # spark 1 5 22 13 53
2690 #   # => ▁▁▃▂▇
2691
2692 # The MIT License
2693 # Copyright (c) Zach Holman, https://zachholman.com
2694 # https://github.com/holman/spark
2695
2696 # As of 2022-10-28, I reviewed github forks that had several newer
2697 # commits, none had anything interesting. I did a little refactoring
2698 # mostly to fix emacs indent bug.
2699
2700 # Generates sparklines.
2701 _spark_echo()
2702 {
2703   if [ "X$1" = "X-n" ]; then
2704     shift
2705     printf "%s" "$*"
2706   else
2707     printf "%s\n" "$*"
2708   fi
2709 }
2710
2711
2712 spark()
2713 {
2714   local f tc
2715   local n numbers=
2716
2717   # find min/max values
2718   local min=0xffffffff max=0
2719
2720   for n in ${@//,/ }
2721   do
2722     # on Linux (or with bash4) we could use `printf %.0f $n` here to
2723     # round the number but that doesn't work on OS X (bash3) nor does
2724     # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
2725     n=${n%.*}
2726     (( n < min )) && min=$n
2727     (( n > max )) && max=$n
2728     numbers=$numbers${numbers:+ }$n
2729   done
2730
2731   # print ticks
2732   local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
2733
2734   # use a high tick if data is constant
2735   (( min == max )) && ticks=(▅ ▆)
2736
2737   tc=${#ticks[@]}
2738   f=$(( ( (max-min) <<8)/( tc - 1) ))
2739   (( f < 1 )) && f=1
2740
2741   for n in $numbers
2742   do
2743     _spark_echo -n ${ticks[$(( (((n-min)<<8)/f) ))]}
2744   done
2745   _spark_echo
2746 }
2747
2748 pdfwc() { local f; for f; do echo "$f" "$(pdfinfo "$f" | awk '/^Pages:/ {print $2}')"; done }
2749
2750
2751 # nvm install script appended this to my .bashrc. I dont want to run it all the time,
2752 # so put it in a function.
2753 nvm-init() {
2754   export NVM_DIR="$HOME/.nvm"
2755   # shellcheck disable=SC1091 # may not exist, & third party
2756   [ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"  # This loads nvm
2757   # shellcheck disable=SC1091 # may not exist, & third party
2758   [ -s "$NVM_DIR/bash_completion" ] && source "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
2759 }
2760
2761
2762 leap-year() {
2763   if date -d 'february 29' &>/dev/null; then
2764     year_days=366
2765   else
2766     year_days=365
2767   fi
2768   echo $year_days
2769 }
2770
2771 # on-battery
2772 on-bat() {
2773   if [[ -e /sys/class/power_supply/AC/online && $(</sys/class/power_supply/AC/online) == 0 ]]; then
2774     return 1
2775   fi
2776 }
2777
2778 # make vim work with my light colortheme terminal.
2779 vim() {
2780   if [[ -e ~/.vimrc ]]; then
2781     command vim "$@"
2782   else
2783     command vim -c ':colorscheme peachpuff' "$@"
2784   fi
2785 }
2786
2787 # ls count. usage: pass a directory, get the number of files.
2788 # https://unix.stackexchange.com/questions/90106/whats-the-most-resource-efficient-way-to-count-how-many-files-are-in-a-director
2789 lsc() {
2790   ls -Uq "$@"|wc -l
2791 }
2792
2793 # run then notify. close notification after the next prompt.
2794 rn() {
2795   "$@"
2796   dunstify -u critical "$*"
2797   _psrun=(dunstctl close-all)
2798 }
2799 n() {
2800   dunstify -u critical n
2801   _psrun=(dunstctl close-all)
2802 }
2803
2804 catnew() {
2805   local dir file
2806   dir="$1"
2807   inotifywait -m "$dir" -e create -e moved_to | while read -r _ _ file; do
2808     hr
2809     cat "$dir/$file"
2810   done
2811 }
2812 # cat mail
2813 cm() {
2814   catnew /m/md/$1/new
2815 }
2816
2817
2818 # * misc stuff
2819
2820
2821 if $use_color && type -p tput &>/dev/null; then
2822   term_bold="$(tput bold)"
2823   term_red="$(tput setaf 1)"
2824   term_green="$(tput setaf 2)"
2825   # shellcheck disable=SC2034 # expected
2826   term_yellow="$(tput setaf 3)"
2827   term_purple="$(tput setaf 5)"
2828   term_nocolor="$(tput sgr0)" # no font attributes
2829
2830   # unused so far. commented for shellcheck
2831   # term_underl="$(tput smul)"
2832   # term_blue="$(tput setaf 4)"
2833   # term_cyan="$(tput setaf 6)"
2834 fi
2835 # Try to keep environment pollution down, EPA loves us.
2836 unset safe_term match_lhs use_color
2837
2838 # * prompt
2839
2840
2841 if [[ $- == *i* ]]; then
2842
2843
2844   case $HOSTNAME in
2845     bk|je|li)
2846       if [[ $EUID == 1000 ]]; then
2847         system-status _ ||:
2848       fi
2849       ;;
2850   esac
2851
2852
2853   # this needs to come before next ps1 stuff
2854   # this stuff needs bash 4, feb 2009,
2855   # old enough to no longer condition on $BASH_VERSION anymore
2856   shopt -s autocd
2857   shopt -s dirspell
2858   PS1='\w'
2859   if [[ $- == *i* ]]  && [[ ! $LC_INSIDE_EMACS ]]; then
2860     PROMPT_DIRTRIM=2
2861     bind -m vi-command B:shell-backward-word
2862     bind -m vi-command W:shell-forward-word
2863   fi
2864
2865   if [[ $SSH_CLIENT || $SUDO_USER ]]; then
2866     unset PROMPT_DIRTRIM
2867     PS1="\h:$PS1"
2868   fi
2869
2870   # emacs terminal has problems if this runs slowly,
2871   # so I've thrown a bunch of things at the wall to speed it up.
2872   prompt-command() {
2873     local return=$? # this MUST COME FIRST
2874     local ps_char ps_color
2875     unset IFS
2876
2877     if [[ $HISTFILE ]]; then
2878       history -a # save history
2879     fi
2880
2881     case $return in
2882       0) ps_color="$term_purple"
2883          ps_char='\$'
2884          ;;
2885       *) ps_color="$term_green"
2886          ps_char="$return \\$"
2887          ;;
2888     esac
2889     if [[ ! -O . ]]; then # not owner
2890       if [[ -w . ]]; then # writable
2891         ps_color="$term_bold$term_red"
2892       else
2893         ps_color="$term_bold$term_green"
2894       fi
2895     fi
2896
2897     # faster than sourceing the file im guessing
2898     if [[ -e /dev/shm/iank-status && ! -e /tmp/quiet-status ]]; then
2899       eval "$(< /dev/shm/iank-status)"
2900     fi
2901     if [[ $MAIL_HOST && $MAIL_HOST != "$HOSTNAME" ]]; then
2902       ps_char="@ $ps_char"
2903     fi
2904     jobs_char=
2905     if [[ $(jobs -p) ]]; then
2906       jobs_char='j\j '
2907     fi
2908
2909
2910     # allow a function to specify a command to run after we run the next
2911     # command. Use case: a function makes a persistent notification. If
2912     # we happen to be using that terminal, we can just keep working by
2913     # entering our next command, even a noop in order to dismiss the
2914     # notification, instead of having to explicitly dismiss it.
2915     if [[ ${_psrun[@]} ]]; then
2916       if (( _psrun_count >= 1 )); then
2917
2918         "${_psrun[@]}" ||:
2919         _psrun_count=0
2920         unset _psrun
2921       else
2922         _psrun_count=$(( _psrun_count + 1 ))
2923       fi
2924     else
2925       _psrun_count=0
2926     fi
2927
2928     # We could test if sudo is active with sudo -nv
2929     # but then we get an email and log of lots of failed sudo commands.
2930     # We could turn those off, but seems better not to.
2931     if [[ $EUID != 0 ]] && [[ $DID_SUDO ]]; then
2932       psudo="\[$term_bold$term_red\]s\[$term_nocolor\] "
2933     fi
2934     if [[ ! $HISTFILE ]]; then
2935       ps_char="NOHIST $ps_char"
2936     fi
2937     PS1="${PS1%"${PS1#*[wW]}"} $jobs_char$psudo\[$ps_color\]$ps_char\[$term_nocolor\] "
2938
2939     # copy of what is automatically added by guix.
2940     # adds [env] to PS1 if GUIX_ENVIRONMENT is set and PS1 contains '$';
2941     if [ -n "$GUIX_ENVIRONMENT" ]; then
2942       if [[ $PS1 =~ (.*)"\\$" ]]; then
2943         PS1="${BASH_REMATCH[1]} [env]\\\$ "
2944       fi
2945     fi
2946
2947
2948     # set titlebar. instead, using more advanced
2949     # titelbar below
2950     #echo -ne "$_title_escape $HOSTNAME ${PWD/#$HOME/~}  \007"
2951   }
2952   PROMPT_COMMAND=(prompt-command)
2953
2954   if [[ $TERM == screen* ]]; then
2955     _title_escape="\033]..2;"
2956   else
2957     # somme sites recommend this, i dunno what the diff is.
2958     #_title_escape="\033]30;"
2959     _title_escape="\033]0;"
2960   fi
2961
2962   # make the titlebar be the last command and the current directory.
2963   settitle () {
2964
2965
2966     # These are some checks to help ensure we dont set the title at
2967     # times that the debug trap is running other than the case we
2968     # want. Some of them might not be needed.
2969     if (( ${#FUNCNAME[@]} != 1 || ${#BASH_ARGC[@]} != 2 || BASH_SUBSHELL != 0 )); then
2970       return 0
2971     fi
2972     if [[ $1 == prompt-command ]]; then
2973       return 0
2974     fi
2975     echo -ne "$_title_escape ${PWD/#$HOME/~} "
2976     printf "%s" "$*"
2977     echo -ne "\007"
2978   }
2979
2980   # note, this wont work:
2981   # x=$(mktemp); cp a $x
2982   # I havnt figured out why, bigger fish to fry.
2983   #
2984   # for titlebar.
2985   # condition from the screen man page i think.
2986   # note: duplicated in tx()
2987   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2988     trap 'settitle "$BASH_COMMAND"' DEBUG
2989   else
2990     trap DEBUG
2991   fi
2992
2993 fi
2994
2995 # * stuff that makes sense to be at the end
2996
2997
2998 # best practice
2999 unset IFS
3000
3001 if [[ -s "$HOME/.rvm/scripts/rvm" ]]; then
3002   # shellcheck disable=SC1091
3003   source "$HOME/.rvm/scripts/rvm"
3004 fi
3005
3006 # I had this idea to start a bash shell which would run an initial
3007 # command passed through this env variable, then continue on
3008 # interactively. But the use case I had in mind went away.
3009 #
3010 # if [[ $MY_INIT_CMD ]]; then
3011 #   "${MY_INIT_CMD[@]}"
3012 #   unset MY_INIT_CMD
3013 # fi
3014
3015 # ensure no bad programs appending to this file will have an affect
3016 return 0