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 # Usage: ORIGINAL_COMMAND TARGET_COMMAND...
 322 #
 323 # It copies how the bash completion works from one command to other
 324 # commands.
 325 ccomp() {
 326   local c src
 327   src=$1
 328   shift
 329   if ! c=$(complete -p $src 2>/dev/null); then
 330     _completion_loader $src &>/dev/null ||:
 331     c=$(complete -p $src 2>/dev/null) || return 0
 332   fi
 333   # remove $src( .*|$)
 334   c=${c% "$src"}
 335   c=${c%% "$src" *}
 336   eval $c $*
 337 }
 338
 339 ## BEGIN directory history tracking and navigation.
 340 #
 341 # use c instead of cd (could alias to cd if you wanted). b to go back, f
 342 # to go forward, cl to list recent directories and choose one.
 343 #
 344 # The finer details you may want to skip:
 345 #
 346 # We also define bl to print the list of back and forward directories.
 347 #
 348 # We keep 2 stacks, forward and back. Unlike with a web browser, the
 349 # forward stack is not erased when going somewhere new.
 350 #
 351 # Recent directories are stored in ~/.cdirs.
 352 #
 353 declare -a _dir_forward _dir_back
 354 c() {
 355   # normally, the top of _dir_back is our current dir. if it isn't,
 356   # put it on there, except we don't want to do that when we
 357   # just launched a shell
 358   if [[ $OLDPWD ]]; then
 359     if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 360       _dir_back+=("$PWD")
 361     fi
 362   fi
 363   command cd "$@"
 364   if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 365     _dir_back+=("$PWD")
 366   fi
 367   echo "$PWD" >> ~/.cdirs
 368 }
 369 ccomp cd c
 370
 371 # back
 372 b() {
 373   local top_back
 374   if (( ${#_dir_back[@]} == 0 )); then
 375     echo "nothing left to go back to" >&2
 376     return 0
 377   fi
 378   top_back="${_dir_back[-1]}"
 379
 380   if [[ $top_back == "$PWD" ]] && (( ${#_dir_back[@]} == 1 )); then
 381     echo "already on last back entry" >&2
 382     return 0
 383   fi
 384
 385
 386   if [[ $top_back == "$PWD" ]]; then
 387     # add to dirf if not already there
 388     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$top_back" ]]; then
 389       _dir_forward+=("$top_back")
 390     fi
 391     unset "_dir_back[-1]"
 392     command cd "${_dir_back[-1]}"
 393   else
 394     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$PWD" ]]; then
 395       _dir_forward+=("$PWD")
 396     fi
 397     command cd "$top_back"
 398   fi
 399
 400   # Interesting feature, not sure I want it.
 401   # give us a peek at what is next in the list
 402   # if (( ${#_dir_back[@]} >= 2 )); then
 403   #   printf "%s\n" "${_dir_back[-2]}"
 404   # fi
 405   #
 406
 407   # c/b/f Implementation notes:
 408   #
 409   # The top of the back is $PWD
 410   # as long as the last directory change was due to c,b,or cl.
 411   #
 412   # Example of stack changes:
 413   #
 414   # a b c (d)
 415   ## back
 416   # a b (c)
 417   # d
 418   #back
 419   #a (b)
 420   #d c
 421   #back
 422   #(a)
 423   #d c b
 424   #forward
 425   #a (b)
 426   #d c
 427   #
 428   # a b c
 429   ## back
 430   # a b
 431   # (c)
 432   ## forward
 433
 434 }
 435 # forward
 436 f() {
 437   local top_forward
 438   if (( ${#_dir_forward[@]} == 0 )); then
 439     echo "no forward dir left" >&2
 440     return 0
 441   fi
 442   top_forward="${_dir_forward[-1]}"
 443   unset "_dir_forward[-1]"
 444   c "$top_forward"
 445
 446   # give us a peek at what is next in the list
 447   # if (( ${#_dir_forward[@]} )); then
 448   #   printf "%s\n" "${_dir_forward[-1]}"
 449   # fi
 450 }
 451 # cd list
 452 cl() {
 453   local i line input start
 454   local -A buttondirs alines
 455   local -a buttons dirs lines
 456   buttons=( {a..z} {2..9} )
 457   if [[ ! -s ~/.cdirs ]]; then
 458     echo nothing in ~/.cdirs
 459     return 0
 460   fi
 461
 462   i=0
 463
 464   mapfile -t lines <~/.cdirs
 465   start=$(( ${#lines[@]} - 1 ))
 466
 467   # we have ~33 buttons as of this writing, so lets
 468   # prune down the history every once in a while.
 469   if (( start > 500 )); then
 470     tac ~/.cdirs | awk '!seen[$0]++' | head -n 200 | tac | sponge ~/.cdirs || [[ $? == 141 ]]
 471   fi
 472
 473   for (( j=start; j >= 0; j-- )); do
 474     line="${lines[$j]}"
 475     if [[ ! $line || ${alines[$line]} || ! -d "$line" || $line == "$PWD" || line == "$HOME"  ]]; then
 476       continue
 477     fi
 478     alines[$line]=t
 479     buttondirs[${buttons[i]}]="$line"
 480     printf "%s %s\n" ${buttons[i]} "$line"
 481     # the LINES bit is for when we have a short terminal, just dont print all
 482     # the directories. alternative would be to do something like less the list.
 483     if (( i == ${#buttons[@]} - 1 )) || { [[ $LINES ]] && (( i == LINES - 3 )); }; then
 484       break
 485     fi
 486     i=$(( i + 1 ))
 487   done
 488
 489   if (( i == 0 )); then
 490     echo "no dirs in ~/.cdirs"
 491     return 0
 492   fi
 493   read -r -N 1 input
 494   if [[ $input != $'\n' ]]; then
 495     c "${buttondirs[$input]}"
 496   fi
 497 }
 498 # list the back and forward directories. i tend to forget this exists
 499 # and use cl instead.
 500 bl() {
 501   local start i j max
 502   max=10
 503   start=$(( ${#_dir_back[@]} - 1 ))
 504
 505   # cleanup possible repeating of pwd
 506   if (( start >= 0 )) && [[ ${_dir_back[$start]} == "$PWD" ]]; then
 507     start=$(( start - 1 ))
 508   fi
 509   j=1
 510   if (( start >= 0 )); then
 511     for (( i=start; i >= 0 ; i-- )); do
 512       printf "%s %s\n" $j ${_dir_back[i]}
 513       j=$(( j + 1 ))
 514       if (( j >= max )); then
 515         break
 516       fi
 517     done
 518   fi
 519
 520   max=10
 521   start=$(( ${#_dir_forward[@]} - 1 ))
 522
 523   # cleanup possible repeating of pwd
 524   if (( start >= 0 )) && [[ ${_dir_forward[$start]} == "$PWD" ]]; then
 525     start=$(( start - 1 ))
 526   fi
 527   if (( start < 0 )); then
 528     return 0
 529   fi
 530   echo --
 531   j=1
 532   for (( i=start; i >= 0 ; i-- )); do
 533     printf "%s %s\n" $j ${_dir_forward[i]}
 534     j=$(( j + 1 ))
 535     if (( j >= max )); then
 536       break
 537     fi
 538   done
 539 }
 540
 541 # pee do. run args as a command with output copied to syslog.
 542 #
 543 # Usage: pd [-t TAG] COMMAND...
 544 #
 545 # -t TAG Override the tag in the syslog. The default is COMMAND with
 546 #        any path part is removed, eg. for /bin/cat the tag is cat.
 547 #
 548 # You can view the log via "journalctl -t TAG"
 549 pd() {
 550   local tag ret
 551   ret=0
 552   tag=${1##*/}
 553   case $1 in
 554     -t) tag="$2"; shift 2 ;;
 555   esac
 556   echo "PWD=$PWD command: $*" | logger -t $tag
 557   "$@" |& pee cat "logger -t $tag" || ret=$?
 558   echo "exited with status=$ret" | pee cat "logger -t $tag"
 559   # this avoids any err-catch
 560   (( ret == 0 )) || return $ret
 561 }
 562 ccomp time pd
 563
 564 # jdo = journal do. Run command as transient systemd service, tailing
 565 # its output in the journal until it completes.
 566 #
 567 # Usage: jdo COMMAND...
 568 #
 569 # Compared to pd: commands recognize this is a non-interactive shell.
 570 # The service is unaffected if our ssh connection dies, no need to run
 571 # in screen or tmux.
 572 #
 573 # Note: The last few lines of any existing entries for a unit by that
 574 # name will be output first, and there will be a few second delay at the
 575 # start of the command, and a second or so at the end.
 576 #
 577 # Note: Functions and aliases obviously won't work, we resolve the
 578 # command to a file.
 579 #
 580 # Note: requires running as root.
 581 jdo() {
 582   local cmd cmd_name jr_pid ret
 583   ret=0
 584   cmd="$1"
 585   shift
 586   if [[ $EUID != 0 ]]; then
 587     echo "jdo: error: rerun as root"
 588     return 1
 589   fi
 590   cmd_name=${cmd##*/}
 591   if [[ $cmd != /* ]]; then
 592     cmd=$(type -P "$cmd")
 593   fi
 594   # -q = quiet
 595   journalctl -qn2 -f -u "$cmd_name" &
 596   # Trial and error of time needed to avoid missing initial lines.
 597   # .5 was not reliable. 1 was not reliable. 2 was not reliable
 598   sleep 4
 599   jr_pid=$!
 600   systemd-run --unit "$cmd_name" --wait --collect "$cmd" "$@" || ret=$?
 601   # The sleep lets the journal output its last line
 602   # before the prompt comes up.
 603   sleep .5
 604   kill $jr_pid &>/dev/null ||:
 605   unset jr_pid
 606   fg &>/dev/null ||:
 607   # this avoids any err-catch
 608   (( ret == 0 )) || return $ret
 609 }
 610 ccomp time jdo
 611 #### end fsf section
 612
 613
 614 ..() { c ..; }
 615 ...() { c ../..; }
 616 ....() { c ../../..; }
 617 .....() { c ../../../..; }
 618 ......() { c ../../../../..; }
 619
 620 chere() {
 621   local f path
 622   for f; do
 623     path=$(readlink -e "$f")
 624     echo "cat >$path <<'EOF'"
 625     cat "$f"
 626     echo EOF
 627   done
 628 }
 629
 630
 631 # file cut copy and paste, like the text buffers :)
 632 # I havnt tested these.
 633 _fbufferinit() { # internal use
 634   ! [[ $my_f_tempdir ]] && my_f_tempdir="$(mktemp -d)"
 635   rm -rf "${my_f_tempdir:?}"/*
 636 }
 637 fcp() { # file cp
 638   _fbufferinit
 639   cp "$@" "$my_f_tempdir"/
 640 }
 641 fct() { # file cut
 642   _fbufferinit
 643   mv "$@" "$my_f_tempdir"/
 644 }
 645 fpst() { # file paste
 646   [[ $2 ]] && { echo too many arguments; return 1; }
 647   target=${1:-.}
 648   cp "$my_f_tempdir"/* "$target"
 649 }
 650
 651 _khfix_common() {
 652   local host ip port file key
 653   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" ||: )
 654   file=$(readlink -f ~/.ssh/known_hosts)
 655   if [[ ! $ip ]]; then
 656     echo "khfix: ssh failed"
 657     return 1
 658   fi
 659   if [[ $port != 22 ]]; then
 660     ip_entry="[$ip]:$port"
 661     host_entry="[$host]:$port"
 662   else
 663     ip_entry=$ip
 664     host_entry=$host
 665   fi
 666   if [[ $host != "$ip" ]]; then
 667     key=$(ssh-keygen -F "$host_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 668     if [[ $key ]]; then
 669       grep -Fv "$key" "$file" | sponge "$file"
 670     fi
 671   fi
 672   key=$(ssh-keygen -F "$ip_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 673   if [[ $key ]]; then
 674     grep -Fv "$key" "$file" | sponge "$file"
 675   fi
 676   ll ~/.ssh/known_hosts
 677   rootsshsync
 678 }
 679 khfix() { # known hosts fix
 680   _khfix_common "$@" || return 1
 681   ssh $1 :
 682 }
 683 khcopy() {
 684   _khfix_common "$@"
 685   ssh-copy-id $1
 686 }
 687
 688 # ya, hacky hardcoded hostnames in 2023. we could do better
 689 hssh-update() {
 690   local -a failed_hosts hosts
 691   case $HOSTNAME in
 692     sy|kd)
 693       hosts=(
 694         kd x3.office.fsf.org syw
 695       )
 696       ;;
 697     x3)
 698       hosts=(
 699         b8.nz sywg.b8.nz
 700       )
 701       ;;
 702   esac
 703   for host in ${hosts[@]}; do
 704     e $host
 705     if ! scp /b/fai/fai/config/files/usr/local/bin/hssh/IANK root@$host:/usr/local/bin/hssh; then
 706       failed_hosts+=($host)
 707     fi
 708   done
 709   if (( ${#failed_hosts[@]} >= 1 )); then
 710     echo failed_hosts=${failed_hosts[*]}
 711     return 1
 712   fi
 713 }
 714
 715 a() {
 716   local x
 717   x=$(readlink -nf "${1:-$PWD}")
 718   # yes, its kinda dumb that xclip/xsel cant do this in one invocation
 719   echo -n "$x" | xclip -selection clipboard
 720   echo -n "$x" | xclip
 721 }
 722
 723 # a1 = awk {print $1}
 724 for field in {1..20}; do
 725   eval a$field"() { awk '{print \$$field}'; }"
 726 done
 727 # h1 = head -n1
 728 for num in {1..9}; do
 729   eval h$num"() { head -n$num || [[ \$? == 141 ]]; }"
 730 done
 731
 732
 733 hexipv4() {
 734   # shellcheck disable=SC2046 disable=SC2001 disable=SC2183 # hacks, expected
 735   printf '%d.%d.%d.%d\n' $(echo $1 | sed 's/../0x& /g')
 736 }
 737
 738 vp9() {
 739   local f out outdir in fname origdir skip1
 740   origdir="$PWD"
 741   outdir=vp9
 742   skip1=false
 743   while [[ $1 == -* ]]; do
 744     case $1 in
 745       # if we got interrupted after 1st phase
 746       -2)
 747         skip1=true
 748         shift
 749         ;;
 750       --out)
 751         outdir=$2
 752         shift 2
 753         ;;
 754     esac
 755   done
 756   m mkdir -p $outdir
 757   # first pass only uses about 1 cpu, so run in parallel
 758   for f; do
 759     {
 760       fname="${f##*/f}"
 761       if [[ $f == /* ]]; then
 762         in="$f"
 763       else
 764         in=$origdir/$f
 765       fi
 766       out="$origdir/$outdir/$fname"
 767       mkdir -p /tmp/vp9/$fname
 768       cd /tmp/vp9/$fname
 769       if ! $skip1 && [[ ! -s ffmpeg2pass-0.log ]]; then
 770         # -nostdin or else wait causes ffmpeg to go into stopped state. dunno why, random stackoverflow answer.
 771         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
 772       fi
 773       if [[ -e $out ]]; then rm -f $out; fi
 774       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 $out
 775     } &
 776   done
 777   wait -f
 778   cd "$origdir"
 779 }
 780
 781 utcl() { # utc 24 hour time to local hour 24 hour time
 782   echo "print( ($1  $(date +%z | sed -r 's/..$//;s/^(-?)0*/\1/')) % 24)"|python3
 783 }
 784
 785 bwm() {
 786   s bwm-ng -T avg -d
 787 }
 788
 789
 790 # for running in a fai rescue. iank specific.
 791 kdrescue() {
 792   d=vgata-Samsung_SSD_850_EVO_2TB_S2RLNX0J502123D
 793   for f in $d vgata-Samsung_SSD_870_QVO_8TB_S5VUNG0N900656V; do
 794     cryptsetup luksOpen --key-file /p /dev/$f/root crypt-$f-root
 795     cryptsetup luksOpen --key-file /p /dev/$f/o crypt-$f-o
 796   done
 797   mount -o subvol=root_trisquelaramo /dev/mapper/crypt-$d-root /mnt
 798   mount -o subvol=a /dev/mapper/crypt-$d-root /mnt/a
 799   mount -o subvol=o /dev/mapper/crypt-$d-o /mnt/o
 800   mount -o subvol=boot_trisquelaramo /dev/sda2 /mnt/boot
 801   cd /mnt
 802   chrbind
 803 }
 804
 805
 806
 807
 808 c4() { c /var/log/exim4; }
 809
 810 caa() { git commit --amend --no-edit -a; }
 811
 812 cf() {
 813   for f; do
 814     hr
 815     echo "$f"
 816     hr
 817     cat "$f"
 818   done
 819 }
 820 caf() {
 821   # shellcheck disable=SC2033
 822   find -L "$@" -type f -not \( -name .svn -prune -o -name .git -prune \
 823        -o -name .hg -prune -o -name .editor-backups -prune \
 824        -o -name .undo-tree-history -prune \) \
 825        -exec bash -c '. ~/.bashrc; hr; echo "$1"; hr; cat "$1"' _ {} \; 2>/dev/null
 826
 827 }
 828 ccomp cat cf caf
 829
 830 calc() { echo "scale=3; $*" | bc -l; }
 831 # no having to type quotes, but also no command history:
 832 clc() {
 833   local x
 834   read -r x
 835   echo "scale=3; $x" | bc -l
 836 }
 837
 838 cam() {
 839   git commit -am "$*"
 840 }
 841
 842 ccat () { # config cat. see a config without extra lines.
 843   sed -r '/^[[:space:]]*([;#]|--|\/\/|$)/d' "$@"
 844 }
 845 ccomp grep ccat
 846
 847 chrbind() {
 848   local d
 849   # dev/pts needed for pacman signature check
 850   for d in dev proc sys dev/pts; do
 851     [[ -d $d ]]
 852     if ! mountpoint $d &>/dev/null; then
 853       m s mount -o bind /$d $d
 854     fi
 855   done
 856 }
 857 chumount() {
 858   local d
 859   # dev/pts needed for pacman signature check
 860   for d in dev/pts dev proc sys; do
 861     [[ -d $d ]]
 862     if mountpoint $d &>/dev/null; then
 863       m s umount $d
 864     fi
 865   done
 866 }
 867
 868
 869 _cdiff-prep() {
 870   # join options which are continued to multiples lines onto one line
 871   local first=true
 872   while IFS= read -r line; do
 873     # remove leading spaces/tabs. assumes extglob
 874     if [[ $line == "[   ]*" ]]; then
 875       line="${line##+( )}"
 876     fi
 877     if $first; then
 878       pastline="$line"
 879       first=false
 880     elif [[ $line == *=* ]]; then
 881       echo "$pastline" >> "$2"
 882       pastline="$line"
 883     else
 884       pastline="$pastline $line"
 885     fi
 886   done < <(grep -vE '^([ \t]*#|^[ \t]*$)' "$1")
 887   echo "$pastline" >> "$2"
 888 }
 889
 890 cdiff() {
 891   # diff config files,
 892   # setup for format of postfix, eg:
 893   # option = stuff[,]
 894   #    [more stuff]
 895   local pastline unified f1 f2
 896   unified="$(mktemp)"
 897   f1="$(mktemp)"
 898   f2="$(mktemp)"
 899   _cdiff-prep "$1" "$f1"
 900   _cdiff-prep "$2" "$f2"
 901   cat "$f1" "$f2" |  grep -Po '^[^=]+=' | sort | uniq > "$unified"
 902   while IFS= read -r line; do
 903     # the default bright red / blue doesnt work in emacs shell
 904     dwdiff -cblue,red -A best -d "      ," <(grep "^$line" "$f1" || echo ) <(grep "^$line" "$f2" || echo ) | colordiff
 905   done < "$unified"
 906 }
 907
 908
 909 cat-new-files() {
 910   local start=$SECONDS
 911   local dir="$1"
 912   # shellcheck disable=SC2030
 913   inotifywait -m "$dir" -e create -e moved_to | \
 914     while read -r filedir _ file; do
 915       cat "$filedir$file"
 916       hr
 917       calc $((SECONDS - start)) / 60
 918       sleep 5
 919     done
 920
 921 }
 922
 923 chownme() {
 924   s chown -R $USER:$USER "$@"
 925 }
 926
 927 # shellcheck disable=SC2032
 928 chown() {
 929   # makes it so chown -R symlink affects the symlink and its target.
 930   if [[ $1 == -R ]]; then
 931     shift
 932     command chown -h "$@"
 933     command chown -R "$@"
 934   else
 935     command chown "$@"
 936   fi
 937 }
 938
 939 cim() {
 940   git commit -m "$*"
 941 }
 942
 943
 944 d() { builtin bg "$@"; }
 945 ccomp bg d
 946
 947 # f would be more natural, but i already am using it for something
 948 z() { builtin fg "$@"; }
 949 ccomp fg z
 950
 951 x() { builtin kill %%; }
 952
 953 dc() {
 954   diff --strip-trailing-cr -w "$@"   # diff content
 955 }
 956 ccomp diff dc
 957
 958 despace() {
 959   local x y
 960   for x in "$@"; do
 961     y="${x// /_}"
 962     safe_rename "$x" "$y"
 963   done
 964 }
 965
 966 # df progress
 967 # usage: dfp MOUNTPOINT [SECOND_INTERVAL]
 968 # SECOND_INTERVAL defaults to 90
 969 dfp() {
 970   # mp = mountpoint
 971   local a b mp interval
 972   mp=$1
 973   interval=${2:-90}
 974   if [[ ! $mp ]]; then
 975     echo "dfp: error, missing 1st arg" >&2
 976     return 1
 977   fi
 978   while true; do
 979     a=$(df --output=used $mp | tail -n1)
 980     sleep $interval
 981     b=$(df --output=used $mp | tail -n1)
 982     printf "used mib: %'d  mib/min: %s\n" $(( b /1000 )) $(( (b-a) / (interval * 1000 / 60 ) ))
 983   done
 984 }
 985
 986 # get ipv4 ip from HOST. or if it is already a number, return that
 987 hostip() {
 988   local host="$1"
 989   case $host in
 990     [0-9:])
 991       echo "$host"
 992       ;;
 993     *)
 994       getent ahostsv4 "$host" | awk '{ print $1 }' | head -n1
 995       ;;
 996   esac
 997 }
 998
 999 dig() {
1000   command dig +nostats +nocmd "$@"
1001 }
1002 # Output with sections sorted, and removal of query id, so 2 dig outputs can be diffed.
1003 digsort() {
1004   local sec
1005   sec=
1006   dig +nordflag "$@" | sed -r 's/^(;; ->>HEADER<<-.*), id: .*/\1/' | while read -r l; do
1007     if [[ $l == [^\;]* ]]; then
1008       sec+="$l"$'\n'
1009     else
1010       if [[ $sec ]]; then
1011         printf "%s" "$sec" | sort
1012         sec=
1013       fi
1014       printf "%s\n" "$l"
1015     fi
1016   done
1017 }
1018 ccomp dig digsort
1019 # compare digs to the 2 servers
1020 # usage: digdiff @server1 @server2 DIG_ARGS
1021 # note: only the soa master nameserver will respond with
1022 # ra "recursive answer" flag. That difference is meaningless afaik.
1023 digdiff() {
1024   local s1 s2
1025   s1=$1
1026   shift
1027   s2=$1
1028   shift
1029   digsort $s1 "$@" | tee /tmp/digdiff
1030   diff -u /tmp/digdiff <(digsort $s2 "$@")
1031 }
1032
1033 # date in a format i like reading
1034 dt() {
1035   date "+%A, %B %d, %r" "$@"
1036 }
1037 dtr() {
1038   date -R "$@"
1039 }
1040 # date with all digits in a format i like
1041 dtd() {
1042   date +%F_%T% "$@"
1043 }
1044 ccomp date dt dtr dtd
1045
1046 dus() { # du, sorted, default arg of
1047   du -sh ${@:-*} | sort -h
1048 }
1049 ccomp du dus
1050
1051
1052 e() { printf "%s\n" "$*"; }
1053
1054 # echo args
1055 ea() {
1056   if (( ! $# )); then
1057     echo no args
1058   fi
1059   for arg; do
1060     printf "%qEOL\n" "${arg}"
1061     printf "%s" "${arg}" |& hexdump -C
1062   done
1063 }
1064
1065 # echo variables. print var including escapes, etc, like xxd for variable
1066 ev() {
1067   if (( ! $# )); then
1068     echo no args
1069   fi
1070   for arg; do
1071     if [[ -v $arg ]]; then
1072       printf "%qEOL\n" "${!arg}"
1073       printf "%s" "${!arg}" |& hexdump -C
1074     else
1075       echo arg $arg is unset
1076     fi
1077   done
1078 }
1079
1080 ediff() {
1081   [[ ${#@} == 2 ]] || { echo "error: ediff requires 2 arguments"; return 1; }
1082   emacs --eval "(ediff-files \"$1\" \"$2\")"
1083 }
1084
1085 # mail related
1086 # shellcheck disable=SC2120 # we expect to pass arguments in use outside this file
1087 etail() {
1088   ngset
1089   tail -F /var/log/exim4/mainlog /var/log/exim4/*main /var/log/exim4/paniclog /var/log/exim4/*panic -n 200 "$@"
1090   ngreset
1091 }
1092 etailm() {
1093   tail -F /var/log/exim4/mainlog -n 200 "$@"
1094 }
1095 etail2() {
1096   tail -F /var/log/exim4/mymain -n 200 "$@"
1097 }
1098 ccomp tail etail etail2
1099
1100 # ran into this online, trying it out
1101 detach() {
1102   ( "$@" &>/dev/null & disown )
1103 }
1104
1105 showkeys() {
1106   ssh "$@" cat .ssh/authorized_keys{,2}
1107 }
1108
1109
1110 # print exim old pids
1111 eoldpids() {
1112   local configtime pid piduptime now daemonpid
1113   printf -v now '%(%s)T' -1
1114   configtime=$(stat -c%Y /var/lib/exim4/config.autogenerated)
1115   if [[ -s /run/exim4/exim.pid ]]; then
1116     daemonpid=$(cat /run/exim4/exim.pid)
1117   fi
1118   for pid in $(pgrep -f '^/usr/sbin/exim4( |$)'); do
1119     # the daemonpid gets reexeced on HUP (service reloads), keeping its same old timestamp
1120     if [[ $pid == "$daemonpid" ]]; then
1121       continue
1122     fi
1123     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
1124     if (( configtime > now - piduptime )); then
1125       echo $pid
1126     fi
1127   done
1128 }
1129
1130 # exim tail but only watch lines from new pids
1131 etailnew() {
1132   local pid oldpids
1133   for pid in $(eoldpids); do
1134     oldpids+="$pid|"
1135   done
1136   if [[ $oldpids ]]; then
1137     etail | awk '$3 !~ /^\[('"${oldpids%|}"')\]$/'
1138   else
1139     etail
1140   fi
1141 }
1142 # exim watch as old pids go away
1143 ewatchold() {
1144   local configtime pid piduptime now tmpstr
1145   local -i count
1146   local -a oldpids
1147   count=0
1148   while true; do
1149     tmpstr=$(eoldpids)
1150     mapfile -t oldpids <<<"$tmpstr"
1151     if (( ! ${#oldpids[@]} )); then
1152       return
1153     fi
1154     # print the date every 20 iterations
1155     if (( ! count % 20 )); then
1156       date
1157     fi
1158     count+=1
1159     ps -f -p "${oldpids[*]}"
1160     sleep 1
1161   done
1162 }
1163
1164 eless() {
1165   less /var/log/exim4/mainlog
1166 }
1167 ccomp less eless
1168 eqcat() {
1169   exiqgrep -ir.\* -o 60 | while read -r i; do
1170     hlm exim -Mvc $i
1171     echo
1172     hlm exigrep $i /var/log/exim4/mainlog | cat ||:
1173   done
1174 }
1175 eqrmf() {
1176   # other ways to get the list of message ids:
1177   # exim -bp | awk 'NF == 4 {print $3}'
1178   # # this is slower 160ms, vs 60.
1179   # exipick -i
1180   exiqgrep -ir.\* | xargs exim -Mrm
1181 }
1182
1183 econfdevnew() {
1184   rm -rf /tmp/edev
1185   mkdir -p /tmp/edev/etc
1186   cp -ra /etc/exim4 /tmp/edev/etc
1187   cp -ra /etc/alias* /tmp/edev/etc
1188   find /tmp/edev/etc/exim4 -type f -execdir sed -i "s,/etc/,/tmp/edev/etc/,g" '{}' +
1189   econfdev
1190 }
1191 econfdev() {
1192   update-exim4.conf -d /tmp/edev/etc/exim4 -o /tmp/edev/e.conf
1193 }
1194
1195 # exim grep in
1196 # show important information about incoming mail in the exim log
1197 egrin() {
1198   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p' <${1:-/var/log/exim4/mainlog}
1199 }
1200
1201 # 2nd line is message-id:
1202 egrinid() {
1203   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).* id=([^ ]+) T="(.*)" from (<[^ ]+> .*$)/\1 \5\n \3\n \4/p' <${1:-/var/log/exim4/mainlog}
1204 }
1205 etailin() {
1206   tail -F /var/log/exim4/mainlog | sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p'
1207 }
1208
1209
1210
1211
1212 fa() {
1213   # find array. make an array of file names found by find into $x
1214   # argument: find arguments
1215   # return: find results in an array $x
1216   while read -rd ''; do
1217     x+=("$REPLY");
1218   done < <(find "$@" -print0);
1219 }
1220
1221 faf() { # find all files. use -L to follow symlinks
1222   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1223        -o -name .hg -prune -o -name .editor-backups -prune \
1224        -o -name .undo-tree-history -prune \) -type f 2>/dev/null
1225 }
1226
1227 # usage ffconcat FILES_TO_CONCAT OUTPUT_FILE
1228 ffconcat() {
1229   local tmpf
1230   tmpf=$(mktemp)
1231   printf "file '%s'\n" "$1" >$tmpf
1232   while (( $# > 1 )); do
1233     shift
1234     printf "file '%s'\n" "$1" >>$tmpf
1235   done
1236   # https://trac.ffmpeg.org/wiki/Concatenate
1237   ffmpeg -f concat -safe 0 -i $tmpf -c copy "$1"
1238   rm $tmpf
1239 }
1240 ffremux() {
1241   local tmpf tmpd
1242   if (( $# == 0 )); then
1243     echo ffremux error expected args >&2
1244     return 1
1245   fi
1246   tmpd="$(mktemp -d)"
1247   for f; do
1248     tmpf=$tmpd/"${f##*/}"
1249     ffmpeg -i "$f" -c:v copy -c:a copy $tmpf
1250     cat $tmpf >"$f"
1251   done
1252   rm -r $tmpd
1253 }
1254
1255
1256
1257 # absolute path of file/dir without resolving symlinks.
1258 #
1259 # Most of the time, I want this where I would normally use readlink.
1260 # This is what realpath -s does in most cases, but sometimes it
1261 # actually resolves symlinks, at least when they are in /.
1262 #
1263 # Note, if run on a dir, if the final component is relative, it won't
1264 # resolve that. Use the below fpd for that.
1265 #
1266 # note: we could make a variation of this which
1267 # assigns to a variable name using eval, so that we don't have to do
1268 # x=$(fp somepath), which might save subshell overhead and look nice,
1269 # but I'm not going to bother.
1270 fp() {
1271   local initial_oldpwd initial_pwd dir base
1272   initial_oldpwd="$OLDPWD"
1273   initial_pwd="$PWD"
1274   if [[ $1 == */* ]]; then
1275     dir="${1%/*}"
1276     base="/${1##*/}"
1277     # CDPATH because having it set will cause cd to possibly print output
1278     CDPATH='' cd "$dir"
1279     printf "%s%s\n" "$PWD" "$base"
1280     CDPATH='' cd "$initial_pwd"
1281     OLDPWD="$initial_oldpwd"
1282   else
1283     printf "%s/%s\n" "$PWD" "$1"
1284   fi
1285 }
1286 # full path of directory without resolving symlinks
1287 fpd() {
1288   local initial_oldpwd initial_pwd dir
1289   initial_oldpwd="$OLDPWD"
1290   initial_pwd="$PWD"
1291   dir="$1"
1292   CDPATH='' cd "$dir"
1293   printf "%s%s\n" "$PWD" "$base"
1294   cd "$initial_pwd"
1295   OLDPWD="$initial_oldpwd"
1296 }
1297
1298
1299 # mail related
1300 frozen() {
1301   rm -rf /tmp/frozen
1302   sudo mailq |gr frozen|awk '{print $3}' | while read -r id; do
1303     sudo exim -Mvl $id
1304     echo
1305     sudo exim -Mvh $id
1306     echo
1307     sudo exim -Mvb $id
1308     echo -e '\n\n##############################\n'
1309   done | tee -a /tmp/frozen
1310 }
1311 frozenrm() {
1312   local ids=()
1313   while read -r line; do
1314     printf '%s\n' "$line"
1315     ids+=("$(printf '%s\n' "$line" |gr frozen|awk '{print $3}')")
1316   done < <(s mailq)
1317   echo "sleeping for 2 in case you change your mind"
1318   sleep 2
1319   sudo exim -Mrm "${ids[@]}"
1320 }
1321
1322 funce() {
1323   # like -e for functions. returns on error.
1324   # at the end of the function, disable with:
1325   # trap ERR
1326   trap 'echo "${BASH_COMMAND:+BASH_COMMAND=\"$BASH_COMMAND\" }
1327 ${FUNCNAME:+FUNCNAME=\"$FUNCNAME\" }${LINENO:+LINENO=\"$LINENO\"  }\$?=$?"
1328 trap ERR
1329 return' ERR
1330 }
1331
1332 getdir () {
1333   local help="Usage: getdir [--help] PATH
1334 Output the directory of PATH, or just PATH if it is a directory."
1335   if [[ $1 == --help ]]; then
1336     echo "$help"
1337     return 0
1338   fi
1339   if [[ $# -ne 1 ]]; then
1340     echo "getdir error: expected 1 argument, got $#"
1341     return 1
1342   fi
1343   if [[ -d $1 ]]; then
1344     echo "$1"
1345   else
1346     local dir
1347     dir="$(dirname "$1")"
1348     if [[ -d $dir ]]; then
1349       echo "$dir"
1350     else
1351       echo "getdir error: directory does not exist"
1352       return 1
1353     fi
1354   fi
1355 }
1356
1357 git_empty_branch() { # start an empty git branch. carefull, it deletes untracked files.
1358   [[ $# == 1 ]] || { echo 'need a branch name!'; return 1;}
1359   local root
1360   root=$(gitroot) || return 1 # function to set gitroot
1361   builtin cd "$root"
1362   git symbolic-ref HEAD refs/heads/$1
1363   rm .git/index
1364   git clean -fdx
1365 }
1366
1367 # shellcheck disable=SC2120
1368 gitroot() {
1369   local help="Usage: gitroot [--help]
1370 Print the full path to the root of the current git repo
1371
1372 Handles being within a .git directory, unlike git rev-parse --show-toplevel,
1373 and works in older versions of git which did not have that."
1374   if [[ $1 == --help ]]; then
1375     echo "$help"
1376     return
1377   fi
1378   local p
1379   p=$(git rev-parse --git-dir) || { echo "error: not in a git repo" ; return 1; }
1380   [[ $p != /* ]] && p=$PWD
1381   echo "${p%%/.git}"
1382 }
1383
1384 g() {
1385
1386   # todo: patch emacs so it will look elsewhere. this is kinda sad:
1387   # https://emacs.stackexchange.com/questions/4253/how-to-start-emacs-with-a-custom-user-emacs-directory
1388
1389   local args gdb=false
1390
1391   if [[ $EMACSDIR ]]; then
1392     path-add "$EMACSDIR/lib-src" "$EMACSDIR/src"
1393   fi
1394
1395   if [[ $DISPLAY ]]; then
1396     args=-n
1397   fi
1398
1399   if (( $# == 0 )); then
1400     args+=" -c"
1401   fi
1402   # duplicate -c, but oh well
1403   if ! pgrep -u $EUID emacsclient; then
1404     if (( $# == 0 )) && type -p gdb &>/dev/null; then
1405       gdb=true
1406     else
1407       args+=" -c"
1408     fi
1409   fi
1410   if [[ $EMACSDIR ]]; then
1411     # Alter the path here, otherwise the nfs mount gets triggered on the
1412     # first path lookup when emacs is not being used.
1413     # shellcheck disable=SC2098 disable=SC2097 # false positive
1414     PATH="$EMACSDIR/lib-src:$EMACSDIR/src:$PATH" EHOME=$HOME HOME=$EMACSDIR m emacsclient -a "" $args "$@"
1415   else
1416     if $gdb; then
1417       # due to a bug, we cant debug from the start unless we get a new gdb
1418       # https://sourceware.org/bugzilla/show_bug.cgi?id=24454
1419       # m gdb -ex="set follow-fork-mode child" -ex=r -ex=quit --args emacs --daemon
1420       m emacsclient -a "" $args "$@"
1421       sleep 1
1422       cd "/a/opt/emacs-$(distro-name)$(distro-num)"
1423       s gdb -p "$(pgrep -f 'emacs --daemon')" -ex c
1424       cd -
1425     else
1426       m emacsclient -a "" $args "$@"
1427     fi
1428   fi
1429 }
1430
1431 # force terminal version
1432 gn() {
1433   g -n "$@"
1434 }
1435
1436 gmacs() {
1437   # quit will prompt if the program crashes.
1438   gdb -ex=r -ex=quit --args emacs "$@"; r;
1439 }
1440
1441 gdkill() {
1442   # kill the emacs daemon
1443   pk1 emacs --daemon
1444 }
1445
1446 gr() {
1447   grep -iIP --color=auto "$@" || return $?
1448 }
1449 grr() { # grep recursive
1450   # Don't return 1 on nonmatch because this is meant to be
1451   # interactive, not in a conditional.
1452   if [[ ${#@} == 1 ]]; then
1453     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" . || [[ $? == 1 ]]
1454   else
1455     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" || [[ $? == 1 ]]
1456   fi
1457 }
1458 ccomp grep gr grr
1459
1460 rg() { grr "$@"; }
1461 ccomp grep rg
1462
1463 # recursive everything. search for files/dirs and lines. rs = easy chars to press
1464 re() {
1465   local query
1466   query="$1"
1467   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1468        -o -name .hg -prune -o -name .editor-backups -prune \
1469        -o -name .undo-tree-history -prune \) 2>/dev/null | grep -iP --color=auto "$query"
1470   grr -m 5 "$@"
1471 }
1472
1473 # horizontal row. used to break up output
1474 hr() {
1475   local blocks
1476   # 180 is long enough.
1477   blocks=██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████
1478   printf "%s\n" "$(tput setaf 5 2>/dev/null ||:)${blocks:0:${COLUMNS:-180}}$(tput sgr0 2>/dev/null||:)"
1479 }
1480 # highlight
1481 hl() {
1482   local col input_len=0
1483   for arg; do
1484     input_len=$((input_len + 1 + ${#arg}))
1485   done
1486   col=$((60 - input_len))
1487   printf "\e[1;97;41m%s" "$*"
1488   if (( col > 0 )); then
1489     # shellcheck disable=SC2046 # needed to work as intended. a better way would be like hr above.
1490     printf "\e[1;97;41m \e[0m%.0s" $(eval echo "{1..${col}}")
1491   fi
1492   echo
1493 }
1494 hlm() { hl "$*";  "$@"; }
1495
1496 hrcat() { local f; for f; do [[ -f $f ]] || continue; hr; echo "$f"; cat "$f"; done }
1497
1498
1499 # get latest hub and run it
1500 # main command to use:
1501 # hub pull-request --no-edit
1502 # --no-edit means to use the first commit\'s message as the pull request message.
1503 # If that fails, try doing
1504 # hub pull-request --no-edit -b UPSTREAM_OWNER:branch
1505 # where branch is usually master. it does the pr against your current branch.
1506 #
1507 # On first use, you input username/pass and it gets an oath token so you dont have to repeat
1508 # it\'s at ~/.config/hub
1509 hub() {
1510   local up uptar updir p re
1511   # example https://github.com/github/hub/releases/download/v2.14.2/hub-linux-amd64-2.14.2.tgz
1512   up=$(wget -q -O- https://api.github.com/repos/github/hub/releases/latest | jq -r .assets[].browser_download_url | grep linux-amd64)
1513   re='[[:space:]]'
1514   if [[ ! $up || $up =~ $re ]]; then
1515     echo "failed to get good update url. got: $up"
1516   fi
1517   uptar=${up##*/}
1518   updir=${uptar%.tgz}
1519   if [[ ! -e /a/opt/$updir ]]; then
1520     rm -rf /a/opt/hub-linux-amd64*
1521     wget -P /a/opt $up
1522     tar -C /a/opt -zxf /a/opt/$uptar
1523     rm -f /a/opt/$uptar
1524   fi
1525   if ! which hub &>/dev/null; then
1526     sudo /a/opt/$updir/install
1527   fi
1528
1529   # save token across computers
1530   if [[ ! -L ~/.config/hub ]]; then
1531     if [[ -e ~/.config/hub  ]]; then
1532       mv ~/.config/hub /p/c/subdir_files/.config/
1533     fi
1534     if [[ -e /p/c/subdir_files/.config/hub ]]; then
1535       conflink
1536     fi
1537   fi
1538   command hub "$@"
1539 }
1540
1541 i() { git "$@"; }
1542 ccomp git i
1543
1544 # git status:
1545 # cvs -qn update
1546
1547 # git checkout FILE
1548 # cvs update -C FILE
1549
1550 # git pull
1551 # cvs up[date]
1552
1553 # potentially useful command translation
1554 # https://fling.seas.upenn.edu/~giesen/dynamic/wordpress/equivalent-commands-for-git-svn-and-cvs/
1555
1556 # importing cvs repo into git using git-cvs package:
1557 # /f/www $ /usr/lib/git-core/git-cvsimport -C /f/www-git
1558
1559 ic() {
1560   # fast commit all
1561   git commit -am "$*"
1562 }
1563
1564 ipp() {
1565   git pull
1566   git push
1567 }
1568
1569 ifn() {
1570   local glob
1571   glob="$1"
1572   shift
1573   find -L "$@" -not \( -name .svn -prune -o -name .git -prune \
1574        -o -name .hg -prune -o -name .editor-backups -prune \
1575        -o -name .undo-tree-history -prune \) -iname "*$glob*" 2>/dev/null
1576 }
1577
1578 ifh() {
1579   # insensitive find here. args are combined into the search string.
1580   # -L = follow symlinks
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 "*$**" 2>/dev/null
1584 }
1585
1586 ifd() {
1587   # insensitive find directory
1588   find -L . -type d -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
1594 ipdrop() {
1595   sudo iptables -A INPUT -s $1 -j DROP
1596 }
1597
1598
1599 istext() {
1600   grep -Il "" "$@" &>/dev/null
1601 }
1602
1603 pst() {
1604   pstree -apnA
1605 }
1606
1607 # journalctl with times in the format the --since= and --until= options accept
1608 jrt() { journalctl -e -n100000 -o short-full "$@"; }
1609 jr() { journalctl -e -n100000 "$@" ; }
1610 jrf() { journalctl -n1000 -f "$@" ; }
1611 jru() {
1612   # the invocation id is "assigned each time the unit changes from an inactive
1613   # state into an activating or active state" man systemd.exec
1614   journalctl -e --no-tail -u exim4 _SYSTEMD_INVOCATION_ID="$(systemctl show -p InvocationID --value $1)"
1615 }
1616 ccomp journalctl jr jrf jru
1617
1618
1619
1620 l() {
1621   if [[ $PWD == /[iap] ]]; then
1622     command ls -A --color=auto -I lost+found "$@"
1623   else
1624     command ls -A --color=auto "$@"
1625   fi
1626 }
1627
1628 lcn() { locate -i "*$**"; }
1629
1630 lg() { LC_COLLATE=C.UTF-8 ll --group-directories-first "$@"; }
1631
1632 lt() { ll -tr "$@"; }
1633
1634 lld() { ll -d "$@"; }
1635
1636 ccomp ls l lg lt lld ll
1637
1638 # low recursively
1639 lowr() {
1640   local f dirs i a
1641   local -a all
1642   for dirs in false true; do
1643     for f; do
1644       if [[ -d $f ]]; then
1645         all=("$f"/**)
1646         # reverse the order to rename the nested dirs first.
1647         # note: 0 element is the dir itself
1648         for ((i=${#all[@]}-1; i>=1; i--)); do
1649           a="${all[i]}"
1650           if $dirs && [[ -d $a ]]; then
1651             # e dirs low "$a" # debug
1652             low "$a"
1653           elif ! $dirs && [[ ! -d $a && -e $a ]]; then
1654             # debug
1655             # e not dirs low "$a" # debug
1656             low "$a"
1657           fi
1658         done
1659       fi
1660       # just rename all the top level args on the second pass
1661       if $dirs; then
1662         # e final dirs low "$f" # debug
1663         low "$f"
1664       fi
1665     done
1666   done
1667 }
1668
1669 low() {  # make filenames lowercase, remove bad chars
1670   local arg new dir f
1671   for arg; do
1672     arg="${arg%%+(/)}" # remove trailing slashes. assumes we have extglob on.
1673     dir="${arg%/*}"
1674     if (( ${#dir} == ${#arg} )); then
1675       dir=.
1676     fi
1677     f="${arg##*/}"
1678     new="${f,,}" # downcase
1679     # shellcheck disable=SC2031 # seems like a shellcheck bug
1680     new="${new//[^a-zA-Z0-9._-]/_}" # sub bad chars
1681     new="${new#"${new%%[[:alnum:]]*}"}" # remove leading/trailing non-alnum
1682     new="${new%"${new##*[[:alnum:]]}"}"
1683     # remove bad underscores, like __ and _._
1684     new=$(echo $new | sed -r 's/__+/_/g;s/_+([.-])|([.-])_+/\1/g')
1685     safe_rename "$dir/$f" "$dir/$new" || return 1
1686   done
1687   return 0
1688 }
1689
1690 lower() { # make first letter of filenames lowercase.
1691   local x
1692   for x in "$@"; do
1693     if [[ ${x::1} == [A-Z] ]]; then
1694       y=$(tr '[:upper:]' '[:lower:]' <<<"${x::1}")"${x:1}"
1695       safe_rename "$x" "$y" || return 1
1696     fi
1697   done
1698 }
1699
1700
1701 k() { # history search
1702   grep -iP --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | tail -n 80 || [[ $? == 1 ]];
1703 }
1704 ks() { # history search with context
1705   # args are an extended regex used by sed
1706   history | sed -nr "h;s/^\s*(\S+\s+){4}//;/$*/{g;p}" | tail -n 80 || [[ $? == 1 ]];
1707 }
1708 ksu() { # history search unique
1709   grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | uniq || [[ $? == 1 ]];
1710 }
1711
1712 # todo: id like to do maybe a daily or hourly cronjob to
1713 # check that my history file size is increasing. Ive had it
1714 # inexplicably truncated in the past.
1715 histrm() {
1716   history -n
1717   HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/'
1718   read -r -p "press anything but contrl-c to delete"
1719   for entry in $(HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/ { print a }' | tac); do
1720     history -d $entry
1721   done
1722   history -w
1723 }
1724
1725 # history without the date
1726 histplain() {
1727   history "$@" | cut -d' ' -f 7-
1728 }
1729
1730 ccomp grep k ks ksu histrm
1731
1732
1733 make-targets() {
1734   # show make targets, via http://stackoverflow.com/questions/3063507/list-goals-targets-in-gnu-make
1735   make -qp | awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ {split($1,A,/ /);for(i in A)print A[i]}'
1736 }
1737
1738 mkc() {
1739   mkdir "$1"
1740   c "$1"
1741 }
1742 ccomp mkdir mkc
1743
1744 mkct() {
1745   mkc "$(mktemp -d)"
1746 }
1747 # mkdir the last arg, cp the rest into it
1748 mkcp() {
1749   mkdir -p "${@: -1}"
1750   cp "${@:1:$#-1}" "${@: -1}"
1751 }
1752 mkmv() {
1753   mkdir -p "${@: -1}"
1754   mv "${@:1:$#-1}" "${@: -1}"
1755 }
1756
1757 mkt() { # mkdir and touch file
1758   local path="$1"
1759   mkdir -p "$(dirname "$path")"
1760   touch "$path"
1761 }
1762
1763 # shellcheck disable=SC2032
1764 mkdir() { command mkdir -p "$@"; }
1765
1766 nags() {
1767   # https://github.com/HenriWahl/Nagstamon/issues/357
1768   if ! pgrep -f /usr/bin/dunst >/dev/null; then
1769     /usr/bin/dunst &
1770   fi
1771   /usr/bin/nagstamon &
1772 }
1773
1774 # profanity screen
1775 profsrc() {
1776   screen -RD -S profanity
1777 }
1778
1779 # i dont want to wait for konsole to exit...
1780 prof() {
1781   command prof &>/dev/null &
1782 }
1783 # self chat
1784 sc() {
1785   while read -r l; do
1786     printf '\033[1A\033[K'; printf "%s\n" "$l"| ts "%F %T" | tee -a /p/self-chat.log
1787   done
1788 }
1789
1790 nmt() {
1791   # cant use s because sudo -i doesnt work for passwordless sudo command
1792   case $EUID in
1793     0)
1794       sudo nmtui-connect "$@"
1795       ;;
1796     *)
1797       nmtui-connect "$@"
1798       ;;
1799   esac
1800 }
1801
1802
1803 ngset() {
1804   if shopt nullglob >/dev/null; then
1805     ngreset=false
1806   else
1807     shopt -s nullglob
1808     ngreset=true
1809   fi
1810 }
1811 ngreset() {
1812   if $ngreset; then
1813     shopt -u nullglob
1814   fi
1815 }
1816
1817 nopanic() {
1818   # shellcheck disable=SC2024
1819   ngset
1820   for f in /var/log/exim4/paniclog /var/log/exim4/*panic; do
1821     base=${f##*/}
1822     if [[ -s $f ]]; then
1823       echo ================== $f =============
1824       s tee -a /var/log/exim4/$base-archive <$f
1825       s truncate -s0 $f
1826     fi
1827   done
1828   ngreset
1829 }
1830
1831
1832 ping() { command ping -O "$@"; }
1833 p8() { ping "$@" 8.8.8.8; }
1834 p6() { ping6 "$@" 2001:4860:4860::8888; }
1835
1836 pkx() { # package extract
1837   local pkg cached tmp f
1838   c "$(mktemp -d)"
1839   pkg=$1
1840   # shellcheck disable=SC2012
1841   cached=$(ls -t /var/cache/apt/archives/${pkg}_* | tail -n1 2>/dev/null) ||:
1842   if [[ $cached ]]; then
1843     m cp $cached .
1844   else
1845     m aptitude download $pkg || return 1
1846   fi
1847   tmp=(*); f=${tmp[0]} # only 1 expected
1848   m ex $f
1849   m rm -f $f
1850 }
1851
1852 # pgrep and kill
1853 pk1() {
1854   local tmpf
1855   local -a pids
1856   tmpf=$(pgrep -f "$*")
1857   mapfile -t pids <<<"$tmpf"
1858   case ${#pids[@]} in
1859     1)
1860       # shellcheck disable=SC2128
1861       {
1862         ps -F ${pids[0]}
1863         m kill ${pids[0]}
1864       }
1865       ;;
1866     0) echo "no pid found" ;;
1867     *)
1868       ps -F ${pids[@]}
1869       ;;
1870   esac
1871 }
1872
1873 psg () {
1874   local x y help
1875   help="Usage: psg [--help] GREP_ARGS
1876 grep ps and output in a nice format"
1877   if [[ $1 == --help ]]; then
1878     echo "$help"
1879     return
1880   fi
1881   x=$(ps -eF)
1882   # final grep is because some commands tend to have a lot of trailing spaces
1883   y=$(echo "$x" | grep -iP "$@" | grep -o '.*[^ ]') ||:
1884   if [[ $y ]]; then
1885     echo "$x" | head -n 1 || [[ $? == 141 ]]
1886     echo "$y"
1887   fi
1888 }
1889
1890 pubip() { curl -4s https://icanhazip.com; }
1891 pubip6() { curl -6s https://icanhazip.com; }
1892 whatismyip() { pubip; }
1893
1894
1895 q() { # start / launch a program in the backround and redir output to null
1896   "$@" &> /dev/null &
1897 }
1898
1899 # shellcheck disable=SC2120
1900 r() {
1901   if [[ $HISTFILE ]]; then
1902     history -a # save history
1903   fi
1904   trap ERR # this avoids a segfault
1905   exit ${1:0}
1906   # i had this redir, not sure why
1907   #  exit "$@" 2>/dev/null
1908 }
1909
1910 # scp is insecure and deprecated.
1911 scp() {
1912   rsync -Pt --inplace "$@"
1913 }
1914 ccomp rsync scp
1915
1916 randport() {
1917   # available high ports are 1024-65535,
1918   # but lets skip things that are more likely to be in use
1919   python3 <<'EOF'
1920 import secrets
1921 print(secrets.SystemRandom().randrange(10002,65500))
1922 EOF
1923 }
1924
1925 # reapply bashrc
1926 reb() {
1927   # shellcheck disable=SC1090 # expected to not follow
1928   source ~/.bashrc
1929 }
1930
1931 rl() {
1932   readlink -f "$@"
1933 }
1934 ccomp readlink rl
1935
1936 rsd() {
1937   # rsync, root is required to keep permissions right.
1938   # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
1939     #                                   --no-times --delete
1940   # basically, make an exact copy, use checksums instead of file times to be more accurate
1941   rsync -ahvic --delete "$@"
1942 }
1943 rsa() {
1944   # like rlu, but dont delete files on the target end which
1945   # do not exist on the original end.
1946   rsync -ahvic "$@"
1947 }
1948 rst() {
1949   # rl without preserving modification time.
1950   rsync -ahvic --delete --no-t "$@"
1951 }
1952 # [RSYNC_OPTS] HOST PATH
1953 rsu() {
1954   # eg. rsu -opts frodo /testpath
1955   # relative paths will expanded with readlink -f.
1956   opts=("${@:1:$#-2}") #  1 to last -2
1957   path="${*:$#}" # last
1958   host="${*:$#-1:1}" # last -1
1959   if [[ $path == .* ]]; then
1960     path=$(readlink -f $path)
1961   fi
1962   m rsync -ahvi --relative --no-implied-dirs "${opts[@]}" "$path" "root@$host:/";
1963 }
1964 ccomp rsync rsd rsa rst rsu
1965
1966 # find programs listening on a port
1967 ssp() {
1968   local port=$1
1969   # to figure out these args, i had to look at the man page from git version, as of 2022-04.
1970   s ss -lpn state listening sport = $port
1971 }
1972
1973 resolvcat() {
1974   local f
1975   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1976     m s nscd -i hosts
1977   fi
1978   f=/etc/resolv.conf
1979   echo $f:;  ccat $f
1980   hr; s ss -lpn sport = 53
1981   if systemctl is-enabled dnsmasq &>/dev/null || [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1982     # this will fail is dnsmasq is failed
1983     hr; m ser status dnsmasq | cat || :
1984     f=/etc/dnsmasq.conf
1985     hr; echo $f:;  ccat $f
1986     hr; m grr '^ *(servers-file|server) *=|^ *no-resolv *$' /etc/dnsmasq.conf /etc/dnsmasq.d
1987     f=/etc/dnsmasq-servers.conf
1988     hr; echo $f:;  ccat $f
1989   fi
1990   hr
1991   echo /etc/nsswitch.conf:
1992   grep '^ *hosts:' /etc/nsswitch.conf
1993   if systemctl is-enabled systemd-resolved &>/dev/null || [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
1994     hr; m ser status systemd-resolved | cat || :
1995     hr; m resolvectl status | cat
1996   fi
1997
1998 }
1999 rcat() {
2000   resolvcat | less
2001 }
2002 reresolv() {
2003   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
2004     m ser stop nscd
2005     sleep .5
2006     m ser start nscd
2007     m sudo nscd -i hosts
2008   fi
2009   if [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
2010     m sudo systemctl restart dnsmasq
2011   fi
2012   if [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
2013     m sudo systemctl restart systemd-resolved
2014   fi
2015   if type -P resolvectl &>/dev/null; then
2016     resolvectl flush-caches
2017   fi
2018 }
2019
2020 # add annoyingly long argument which should be the default
2021 sedi() {
2022   sed -i --follow-symlinks "$@"
2023 }
2024
2025 rmstrips() {
2026   ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
2027 }
2028
2029 urun () {
2030   umask $1
2031   shift
2032   "$@"
2033 }
2034 sudo () {
2035   command sudo "$@" || return $?
2036   DID_SUDO=true
2037 }
2038 s() {
2039   # background
2040   # I use a function because otherwise we cant use in a script,
2041   # cant assign to variable.
2042   #
2043   # note: gksudo is recommended for X apps because it does not set the
2044   # home directory to the same, and thus apps writing to ~ fuck things up
2045   # with root owned files.
2046   #
2047   if [[ $EUID != 0 || $1 == -* ]]; then
2048     # shellcheck disable=SC2034
2049     SUDOD="$PWD" command sudo -i "$@"
2050     DID_SUDO=true
2051   else
2052     "$@"
2053   fi
2054 }
2055 sb() { # sudo bash -c
2056   # use sb instead of s is for sudo redirections,
2057   # eg. sb 'echo "ok fine" > /etc/file'
2058   # shellcheck disable=SC2034
2059   local SUDOD="$PWD"
2060   sudo -i bash -c "$@"
2061 }
2062 # secret sudo
2063 se() { s urun 0077 "$@"; }
2064 ccomp sudo s sb se
2065
2066 safe_rename() { # warn and dont rename if file exists.
2067   # mv -n exists, but it\'s silent
2068   if [[ $# != 2 ]]; then
2069     echo safe_rename error: $# args, need 2 >&2
2070     return 1
2071   fi
2072   if [[ $1 != "$2" ]]; then # yes, we want to silently ignore this
2073     if [[ -e $2 || -L $2 ]]; then
2074       echo "Cannot rename $1 to $2 as it already exists."
2075     else
2076       mv -vi "$1" "$2"
2077     fi
2078   fi
2079 }
2080
2081
2082 sd() {
2083   sudo dd status=none of="$1"
2084 }
2085
2086 ser() {
2087   if type -p systemctl &>/dev/null; then
2088     s systemctl "$@"
2089   else
2090     if (( $# >= 3 )); then
2091       echo iank: ser expected 2 or less arguments
2092       return 1
2093     fi
2094     s service $2 $1
2095   fi
2096 }
2097 serstat() {
2098   systemctl -n 40 status "$@"
2099 }
2100
2101 seru() { systemctl --user "$@"; }
2102 # like restart, but do nothing if its not already started
2103 srestart() {
2104   local service=$1
2105   if [[ $(s systemctl --no-pager show -p ActiveState $service ) == ActiveState=active ]]; then
2106     systemctl restart $service
2107   fi
2108 }
2109
2110 setini() { # set a value in a .ini style file
2111   key="$1" value="$2" section="$3" file="$4"
2112   if [[ -s $file ]]; then
2113     sed -ri -f - "$file" <<EOF
2114 # remove existing keys
2115 / *\[$section\]/,/^ *\[[^]]+\]/{/^\s*${key}[[:space:]=]/d}
2116 # add key
2117 /^\s*\[$section\]/a $key=$value
2118 # from section to eof, do nothing
2119 /^\s*\[$section\]/,\$b
2120 # on the last line, if we haven't found section yet, add section and key
2121 \$a [$section]\\
2122 $key=$value
2123 EOF
2124   else
2125     cat >"$file" <<EOF
2126 [$section]
2127 $key=$value
2128 EOF
2129   fi
2130 }
2131
2132 sgo() { # service go
2133   service=$1
2134   ser restart $service || return 1
2135   if type -p systemctl &>/dev/null; then
2136     ser enable $service
2137   fi
2138 }
2139 soff () {
2140   for service; do
2141     # ignore services that dont exist
2142     if systemctl cat $service &>/dev/null; then
2143       ser stop $service;
2144       ser disable $service
2145     fi
2146   done
2147 }
2148
2149 sgu() {
2150   systemctl list-unit-files | rg "$@"
2151 }
2152
2153
2154 sk() {
2155   # disable a warning with:
2156   # shellcheck disable=SC2206 # reasoning
2157
2158   # see bash-template/style-guide.md for justifications
2159
2160   local quotes others
2161   quotes=2048,2068,2086,2206,2254
2162   others=2029,2032,2033,2054,2164,
2163   shellcheck -W 999 -x -e $quotes,$others "$@" || return $?
2164 }
2165 # sk with quotes. For checking scripts that we expect to take untrusted
2166 # input in order to verify we quoted vars.
2167 skq() {
2168   local others
2169   others=2029,2033,2054,2164
2170   shellcheck -W 999 -x -e $others "$@" || return $?
2171 }
2172
2173 skgit() {
2174   local f
2175   for f in $(i s | awk '$1 == "modified:" {print $2}'); do
2176     if [[ $(head -n1 "$f") == '#!/bin/bash'* ]]; then
2177       sk $f ||:
2178     fi
2179   done
2180 }
2181
2182 # sl: ssh, but firsh rsync our bashrc and related files to a special
2183 # directory on the remote host if needed.
2184
2185 # Some environment variables and files need to be setup for this to work
2186 # (mine are set at the beginning of this file)
2187
2188 # SL_FILES_DIR: Environment variable. Path to folder which should at
2189 # least have a .bashrc file or symlink. This dir will be rsynced to ~ on
2190 # remote hosts (top level symlinks are resolved) unless the host already
2191 # has a $SL_FILES_DIR/.bashrc. In that case, we assume it is a host you
2192 # control and sync files to separately and already has the ~/.bashrc you
2193 # want. The remote bash will also take its .inputrc config from this
2194 # folder (default of not existing is fine). Mine looks like this:
2195 # https://iankelling.org/git/?p=distro-setup;a=tree;f=sl/.iank
2196
2197 # SL_INFO_DIR: Environment variable. This folder stores info about what
2198 # we detected on the remote system and when we last synced. It will be created
2199 # if it does not exist. Sometimes you may want to forget about a
2200 # remote system, you can use sl --rsync, or the function for that slr
2201 # below.
2202
2203 # SL_TEST_CMD: Env var. Meant to be used to vary the files synced
2204 # depending on the remote host. Run this string on the remote host the
2205 # first time sl is run (or if we run slr). The result is passed to
2206 # SL_TEST_HOOK. For example,
2207 # export SL_TEST_CMD=". /etc/os-release ; echo \${VERSION//[^a-zA-Z0-9]/}"
2208
2209 # SL_TEST_HOOK: Env var. It is run as $SL_TEST_HOOK. This can set
2210 # $SL_FILES_DIR to vary the files synced.
2211
2212 # SL_RSYNC_ARGS: Env var. String of arguments passed to rsync. For
2213 # example to exclude files within a directory. Note, excluded
2214 # files wont be deleted on rsync, you can add --delete-excluded
2215 # to the rsync command if that is desired.
2216
2217 # SL_SSH_ARGS: Env var. Default arguments passed to ssh.
2218
2219 # For when ~/.bashrc is already customized on the remote server, you
2220 # might find it problematic that ~/.bashrc is sourced for ALL ssh
2221 # commands, even in scripts. This paragraph is all about that. bash
2222 # scripts dont source ~/.bashrc, but call ssh in scripts and you get
2223 # ~/.bashrc. You dont want this. .bashrc is meant for interactive shells
2224 # and if you customize it, probably has bugs from time to time. This is
2225 # bad. Here's how I fix it. I have a special condition to "return" in my
2226 # .bashrc for noninteractive ssh shells (copy that code). Then use this
2227 # function or similar that passes LC_USEBASHRC=t when sshing and I want
2228 # my bashrc. Also, I don't keep most of my bashrc in .bashrc, i source a
2229 # separate file because even if I return early on, the whole file gets
2230 # parsed which can fail if there is a syntax error.
2231 sl() {
2232   # Background on LC_USEBASHRC var (no need to read if you just want to
2233   # use this function): env variables sent across ssh are strictly
2234   # limited, but we get LC_* at least in debian based machines, so we
2235   # just make that * be something no normal program would use. Note, on
2236   # hosts that dont allow LC_* I start an inner shell with LC_USEBASHRC
2237   # set, and the inner shell also allows running a nondefault
2238   # .bashrc. This means the outer shell still ran the default .bashrc,
2239   # but that is the best we can do.
2240
2241   local now args remote dorsync haveinfo tmpa sshinfo tmp tmp2 type info_sec force_rsync \
2242         sync_dirname testcmd extra_info testbool files_sec sl_test_cmd sl_test_hook
2243   declare -a args tmpa
2244
2245   args=($SL_SSH_ARGS)
2246
2247   # ssh [-1246Antivivisectionist] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port]
2248   # [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11] [-i identity_file] [-L address]
2249   # [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port] [-Q query_option]
2250   # [-R address] [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]] [user@]hostname
2251   # [command]
2252
2253   # ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
2254   # [-D [bind_address:]port] [-E log_file] [-e escape_char]
2255   # [-F configfile] [-I pkcs11] [-i identity_file]
2256   # [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
2257   # [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address]
2258   # [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
2259
2260   force_rsync=false
2261   if [[ $1 == --rsync ]]; then
2262     force_rsync=true
2263     shift
2264   fi
2265   # shellcheck disable=SC2153 # intentional
2266   sl_test_cmd=$SL_TEST_CMD
2267   # shellcheck disable=SC2153 # intentional
2268   sl_test_hook=$SL_TEST_HOOK
2269   # shellcheck disable=SC2153 # intentional
2270   sl_rsync_args=$SL_RSYNC_ARGS
2271   while [[ $1 ]]; do
2272     case "$1" in
2273       --rsync)
2274         force_rsync=true
2275         ;;
2276       --sl-test-cmd)
2277         sl_test_cmd="$2"
2278         shift
2279         ;;
2280       --sl-test-hook)
2281         sl_test_hook="$2"
2282         shift
2283         ;;
2284       --sl-rsync-args)
2285         sl_rsync_args="$2"
2286         shift
2287         ;;
2288       *)
2289         break
2290         ;;
2291     esac
2292     shift
2293   done
2294
2295   while [[ $1 ]]; do
2296     case "$1" in
2297       # note we dont support things like -4oOption
2298       -[46AaCfGgKkMNnqsTtVvXxYy]*)
2299         args+=("$1"); shift
2300         ;;
2301       -[bcDEeFIiJLlmOopQRSWw]*)
2302         # -oOption etc is valid
2303         if (( ${#1} >= 3 )); then
2304           args+=("$1"); shift
2305         else
2306           args+=("$1" "$2"); shift 2
2307         fi
2308         ;;
2309       *)
2310         break
2311         ;;
2312     esac
2313   done
2314   remote="$1"
2315   if [[ ! $remote ]]; then
2316     echo $0: error hostname required >&2
2317     return 1
2318   fi
2319   shift
2320
2321   if [[ ! $SL_INFO_DIR  ]]; then
2322     echo 'error: missing SL_INFO_DIR env var' >&2
2323     return 1
2324   fi
2325
2326   dorsync=false
2327   haveinfo=false
2328   tmpa=($SL_INFO_DIR/???????????"$remote")
2329   sshinfo=${tmpa[0]}
2330   if [[ -e $sshinfo ]]; then
2331     if $force_rsync; then
2332       rm -f $sshinfo
2333     else
2334       haveinfo=true
2335     fi
2336   fi
2337   if $haveinfo; then
2338     tmp=${sshinfo[0]##*/}
2339     tmp2=${tmp::11}
2340     type=${tmp2: -1}
2341     extra_info=$(cat $sshinfo)
2342   else
2343     # we test for string to know ssh succeeded
2344     testbool="test -e $SL_FILES_DIR/.bashrc -a -L .bashrc -a -v LC_USEBASHRC"
2345     testcmd="if $testbool; then printf y; else printf n; fi"
2346     if ! tmp=$(LC_USEBASHRC=y command ssh "${args[@]}" "$remote" "$testcmd; $sl_test_cmd"); then
2347       echo failed sl test. doing plain ssh -v
2348       command ssh -v "${args[@]}" "$remote"
2349     fi
2350     if [[ $tmp == y* ]]; then
2351       type=a
2352     else
2353       dorsync=true
2354       type=b
2355     fi
2356     extra_info="${tmp:1}"
2357   fi
2358   if [[ $sl_test_hook ]]; then
2359     RSYNC_RSH="ssh ${args[*]}" $sl_test_hook "$extra_info" "$remote"
2360   fi
2361
2362   if $haveinfo && [[ $type == b ]]; then
2363     info_sec=${tmp::10}
2364     read -r files_sec _ < <(find -L $SL_FILES_DIR -printf "%T@ %p\n" | sort -nr || [[ $? == 141 || ${PIPESTATUS[0]} == 32 ]]  )
2365     files_sec=${files_sec%%.*}
2366     if (( files_sec > info_sec )); then
2367       dorsync=true
2368       rm -f $sshinfo
2369     fi
2370   fi
2371
2372   sync_dirname=${SL_FILES_DIR##*/}
2373
2374   if [[ ! $SL_FILES_DIR  ]]; then
2375     echo 'error: missing SL_FILES_DIR env var' >&2
2376     return 1
2377   fi
2378
2379   if $dorsync; then
2380     RSYNC_RSH="ssh ${args[*]}" m rsync -rptL --delete $sl_rsync_args $SL_FILES_DIR "$remote":
2381   fi
2382   if $dorsync || ! $haveinfo; then
2383     sshinfo=$SL_INFO_DIR/$EPOCHSECONDS$type"$remote"
2384     [[ -e $SL_INFO_DIR ]] || mkdir -p $SL_INFO_DIR
2385     printf "%s\n" "$extra_info" >$sshinfo
2386     chmod 666 $sshinfo
2387   fi
2388   if [[ $type == b ]]; then
2389     if (( ${#@} )); then
2390       # Theres a couple ways to pass arguments, im not sure whats best,
2391       # but relying on bash 4.4+ escape quoting seems most reliable.
2392       command ssh "${args[@]}" "$remote" \
2393               LC_USEBASHRC=t bash -c '.\ '$sync_dirname'/.bashrc\;"\"\$@\""' bash ${@@Q}
2394     elif [[ ! -t 0 ]]; then
2395       # This case is when commands are being piped to ssh.
2396       # Normally, no bashrc gets sourced.
2397       # But, since we are doing all this, lets source it because we can.
2398       cat <(echo . $sync_dirname/.bashrc) - | command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2399     else
2400       command ssh -t "${args[@]}" "$remote" LC_USEBASHRC=t INPUTRC=$sync_dirname/.inputrc bash --rcfile $sync_dirname/.bashrc
2401     fi
2402   else
2403     if [[ -t 0 ]]; then
2404       LC_USEBASHRC=t command ssh "${args[@]}" "$remote" ${@@Q}
2405     else
2406       command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2407     fi
2408   fi
2409   # this function inspired from https://github.com/Russell91/sshrc
2410 }
2411
2412 slr() {
2413   sl --rsync "$@"
2414 }
2415 sss() { # ssh solo
2416   sl -oControlMaster=no -oControlPath=/ "$@"
2417 }
2418 # kill off old shared socket then ssh
2419 ssk() {
2420   m ssh -O exit "$@" || [[ $? == 255 ]]
2421   m sl "$@"
2422 }
2423 ccomp ssh sl slr sss ssk
2424 # plain ssh
2425 ssh() {
2426   if [[ $TERM == alacritty || $TERM == xterm-kitty ]]; then
2427     TERM=xterm-256color LC_USEBASHRC=t command ssh "$@"
2428   else
2429     LC_USEBASHRC=t command ssh "$@"
2430   fi
2431 }
2432
2433
2434 slog() {
2435   # log with script. timing is $1.t and script is $1.s
2436   # -l to save to ~/typescripts/
2437   # -t to add a timestamp to the filenames
2438   local logdir do_stamp arg_base
2439   (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
2440   logdir="/a/dt/"
2441   do_stamp=false
2442   while getopts "lt" option
2443   do
2444     case $option in
2445       l) arg_base=$logdir ;;
2446       t) do_stamp=true ;;
2447       *)
2448         echo error: bad option
2449         return 1
2450         ;;
2451     esac
2452   done
2453   shift $((OPTIND - 1))
2454   arg_base+=$1
2455   [[ -e $logdir ]] || mkdir -p $logdir
2456   $do_stamp && arg_base+=$(date +%F.%T%z)
2457   script -t $arg_base.s 2> $arg_base.t
2458 }
2459 splay() { # script replay
2460   #logRoot="$HOME/typescripts/"
2461   #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
2462   scriptreplay "$1.t" "$1.s"
2463 }
2464
2465 sr() {
2466   # sudo redo. be aware, this command may not work right on strange distros or earlier software
2467   if [[ $# == 0 ]]; then
2468     sudo -E bash -c -l "$(history -p '!!')"
2469   else
2470     echo this command redos last history item. no argument is accepted
2471   fi
2472 }
2473
2474 srm () {
2475   # with -ll, less secure but faster.
2476   command srm -ll "$@"
2477 }
2478
2479 srun() {
2480   scp $2 $1:/tmp
2481   ssh $1 "/tmp/${2##*/}" "$(printf "%q\n" "${@:2}")"
2482 }
2483
2484
2485 swap() {
2486   local tmp
2487   tmp=$(mktemp)
2488   mv $1 $tmp
2489   mv $2 $1
2490   mv $tmp $2
2491 }
2492
2493 tclock() { # terminal clock
2494   local x
2495   clear
2496   date +%l:%_M
2497   len=60
2498   # this goes to full width
2499   #len=${1:-$((COLUMNS -7))}
2500   x=1
2501   while true; do
2502     if (( x == len )); then
2503       end=true
2504       d="$(date +%l:%_M)   "
2505     else
2506       end=false
2507       d=$(date +%l:%M:%_S)
2508     fi
2509     echo -en "\r"
2510     echo -n "$d"
2511     for ((i=0; i<x; i++)); do
2512       if (( i % 6 )); then
2513         echo -n _
2514       else
2515         echo -n .
2516       fi
2517     done
2518     if $end; then
2519       echo
2520       x=1
2521     else
2522       x=$((x+1))
2523     fi
2524     sleep 5
2525   done
2526 }
2527
2528
2529 te() {
2530   # test existence / exists
2531   local ret=0
2532   for x in "$@"; do
2533     [[ -e "$x" || -L "$x" ]] || ret=1
2534   done
2535   return $ret
2536 }
2537
2538 psoff() {
2539   # normally, i would just execute these commands in the function.
2540   # however, DEBUG is not inherited, so we need to run it outside a function.
2541   # And we want to run set -x afterwards to avoid spam, so we cram everything
2542   # in here, and then it will run after this function is done.
2543   # # set as array to satisfy shellcheck, but it is equivalent to setting it as non-array
2544   PROMPT_COMMAND=('trap DEBUG; unset PROMPT_COMMAND; PS1="\w \$ "')
2545 }
2546 pson() {
2547   PROMPT_COMMAND=(prompt-command)
2548   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2549     trap 'settitle "$BASH_COMMAND"' DEBUG
2550   fi
2551 }
2552
2553 # prometheus node curl
2554 pnodecurl() {
2555   local host
2556   host=${1:-127.0.0.1}
2557   s curl --cert-type PEM --cert /etc/prometheus/ssl/prometheus_cert.pem --key /etc/prometheus/ssl/prometheus_key.pem --cacert /etc/prometheus/ssl/prom_node_cert.pem --resolve prom_node:9100:$host -v https://prom_node:9100/metrics
2558 }
2559
2560 tx() { # toggle set -x, and the prompt so it doesnt spam
2561   if [[ $- == *x* ]]; then
2562     set +x
2563     pson
2564   else
2565     psoff
2566   fi
2567 }
2568
2569 psnetns() {
2570   # show all processes in the network namespace $1.
2571   # blank entries appear to be subprocesses/threads
2572   local x netns
2573   netns=$1
2574   ps -w | head -n 1
2575   sudo find -L /proc/[1-9]*/task/*/ns/net -samefile /run/netns/$netns | cut -d/ -f5 | \
2576     while read -r l; do
2577       x=$(ps -w --no-headers -p $l);
2578       if [[ $x ]]; then echo "$x"; else echo $l; fi;
2579     done
2580 }
2581 nonet() {
2582   if ! s ip netns list | grep -Fx nonet &>/dev/null; then
2583     s ip netns add nonet
2584   fi
2585   sudo -E env /sbin/ip netns exec nonet sudo -E -u iank /bin/bash
2586 }
2587
2588 m() { printf "%s\n" "$*";  "$@"; }
2589
2590 # update file. note: duplicated in mail-setup.
2591 # updates $ur u result to true or false
2592 # updates $reload to true if file updated is in /etc/systemd/system
2593 u() {
2594   local tmp tmpdir dest="$1"
2595   local base="${dest##*/}"
2596   local dir="${dest%/*}"
2597   if [[ $dir != "$base" ]]; then
2598     # dest has a directory component
2599     mkdir -p "$dir"
2600   fi
2601   # shellcheck disable=SC2034 # see comment at top of function
2602   ur=false # u result
2603   tmpdir="$(mktemp -d)"
2604   cat >$tmpdir/"$base"
2605   tmp=$(rsync -ic $tmpdir/"$base" "$dest")
2606   if [[ $tmp ]]; then
2607     printf "%s\n" "$tmp"
2608     # shellcheck disable=SC2034 # see comment at top of function
2609     ur=true
2610     if [[ $dest == /etc/systemd/system/* ]]; then
2611       # shellcheck disable=SC2034 # see comment at top of function
2612       reload=true
2613     fi
2614   fi
2615   rm -rf $tmpdir
2616 }
2617
2618
2619 uptime() {
2620   if type -p uprecords &>/dev/null; then
2621     uprecords -B
2622   else
2623     command uptime
2624   fi
2625 }
2626
2627 virshrm() {
2628   for x in "$@"; do virsh destroy "$x"; virsh undefine "$x"; done
2629 }
2630
2631 vm-set-listen(){
2632   local t
2633   t=$(mktemp)
2634   local vm=$1
2635   local ip=$2
2636   sudo virsh dumpxml $vm | sed -r "s/(<listen.*address=')([^']+)/\1$ip/" | \
2637     sed -r "s/listen='[^']+/listen='$ip/"> $t
2638   sudo virsh undefine $vm
2639   sudo virsh define $t
2640 }
2641
2642
2643 vmshare() {
2644   vm-set-listen $1 0.0.0.0
2645 }
2646
2647
2648 vmunshare() {
2649   vm-set-listen $1 127.0.0.1
2650 }
2651
2652 myiwscan() {
2653   # find input, copy to pattern space, when we find the first field, print the copy in different order without newlines.
2654   # instead of using labels, we could just match a line and group, eg: /signal:/,{s/signal:(.*)/\1/h}
2655   sudo iw dev wls1 scan | sed -rn  "
2656 s/^\Wcapability: (.*)/\1/;Ta;h;b
2657 :a;s/^\Wsignal: -([^.]+).*/\1/;Tb;H;b
2658 # padded to min width of 20
2659 :b;s/\WSSID: (.*)/\1                    /;T;s/^(.{20}(.*[^ ])?) */\1/;H;g;s/(.*)\n(.*)\n(.*)/\2 \3  \1/gp;b
2660 "|sort -r
2661 }
2662
2663 # Run script by copying it to a temporary location first,
2664 # and changing directory, so we don't have any open
2665 # directories or files that could cause problems when
2666 # remounting.
2667 zr() {
2668   local tmp
2669   tmp=$(type -p "$1")
2670   if [[ $tmp ]]; then
2671     cd "$(mktemp -d)"
2672     cp -a "$tmp" .
2673     shift
2674     ./"${tmp##*/}" "$@"
2675   else
2676     "$@"
2677   fi
2678 }
2679
2680
2681 # * spark
2682 # spark 1 5 22 13 53
2683 #   # => ▁▁▃▂▇
2684
2685 # The MIT License
2686 # Copyright (c) Zach Holman, https://zachholman.com
2687 # https://github.com/holman/spark
2688
2689 # As of 2022-10-28, I reviewed github forks that had several newer
2690 # commits, none had anything interesting. I did a little refactoring
2691 # mostly to fix emacs indent bug.
2692
2693 # Generates sparklines.
2694 _spark_echo()
2695 {
2696   if [ "X$1" = "X-n" ]; then
2697     shift
2698     printf "%s" "$*"
2699   else
2700     printf "%s\n" "$*"
2701   fi
2702 }
2703
2704
2705 spark()
2706 {
2707   local f tc
2708   local n numbers=
2709
2710   # find min/max values
2711   local min=0xffffffff max=0
2712
2713   for n in ${@//,/ }
2714   do
2715     # on Linux (or with bash4) we could use `printf %.0f $n` here to
2716     # round the number but that doesn't work on OS X (bash3) nor does
2717     # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
2718     n=${n%.*}
2719     (( n < min )) && min=$n
2720     (( n > max )) && max=$n
2721     numbers=$numbers${numbers:+ }$n
2722   done
2723
2724   # print ticks
2725   local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
2726
2727   # use a high tick if data is constant
2728   (( min == max )) && ticks=(▅ ▆)
2729
2730   tc=${#ticks[@]}
2731   f=$(( ( (max-min) <<8)/( tc - 1) ))
2732   (( f < 1 )) && f=1
2733
2734   for n in $numbers
2735   do
2736     _spark_echo -n ${ticks[$(( (((n-min)<<8)/f) ))]}
2737   done
2738   _spark_echo
2739 }
2740
2741 pdfwc() { local f; for f; do echo "$f" "$(pdfinfo "$f" | awk '/^Pages:/ {print $2}')"; done }
2742
2743
2744 # nvm install script appended this to my .bashrc. I dont want to run it all the time,
2745 # so put it in a function.
2746 nvm-init() {
2747   export NVM_DIR="$HOME/.nvm"
2748   # shellcheck disable=SC1091 # may not exist, & third party
2749   [ -s "$NVM_DIR/nvm.sh" ] && source "$NVM_DIR/nvm.sh"  # This loads nvm
2750   # shellcheck disable=SC1091 # may not exist, & third party
2751   [ -s "$NVM_DIR/bash_completion" ] && source "$NVM_DIR/bash_completion"  # This loads nvm bash_completion
2752 }
2753
2754
2755 leap-year() {
2756   if date -d 'february 29' &>/dev/null; then
2757     year_days=366
2758   else
2759     year_days=365
2760   fi
2761   echo $year_days
2762 }
2763
2764 # on-battery
2765 on-bat() {
2766   if [[ -e /sys/class/power_supply/AC/online && $(</sys/class/power_supply/AC/online) == 0 ]]; then
2767     return 1
2768   fi
2769 }
2770
2771 # make vim work with my light colortheme terminal.
2772 vim() {
2773   if [[ -e ~/.vimrc ]]; then
2774     command vim "$@"
2775   else
2776     command vim -c ':colorscheme peachpuff' "$@"
2777   fi
2778 }
2779
2780 # ls count. usage: pass a directory, get the number of files.
2781 # https://unix.stackexchange.com/questions/90106/whats-the-most-resource-efficient-way-to-count-how-many-files-are-in-a-director
2782 lsc() {
2783   ls -Uq "$@"|wc -l
2784 }
2785
2786 # run then notify. close notification after the next prompt.
2787 rn() {
2788   "$@"
2789   dunstify -u critical "$*"
2790   _psrun=(dunstctl close-all)
2791 }
2792 n() {
2793   dunstify -u critical n
2794   _psrun=(dunstctl close-all)
2795 }
2796
2797 catnew() {
2798   local dir file
2799   dir="$1"
2800   inotifywait -m "$dir" -e create -e moved_to | while read -r _ _ file; do
2801     hr
2802     cat "$dir/$file"
2803   done
2804 }
2805 # cat mail
2806 cm() {
2807   catnew /m/md/$1/new
2808 }
2809
2810
2811 # * misc stuff
2812
2813
2814 if $use_color && type -p tput &>/dev/null; then
2815   term_bold="$(tput bold)"
2816   term_red="$(tput setaf 1)"
2817   term_green="$(tput setaf 2)"
2818   # shellcheck disable=SC2034 # expected
2819   term_yellow="$(tput setaf 3)"
2820   term_purple="$(tput setaf 5)"
2821   term_nocolor="$(tput sgr0)" # no font attributes
2822
2823   # unused so far. commented for shellcheck
2824   # term_underl="$(tput smul)"
2825   # term_blue="$(tput setaf 4)"
2826   # term_cyan="$(tput setaf 6)"
2827 fi
2828 # Try to keep environment pollution down, EPA loves us.
2829 unset safe_term match_lhs use_color
2830
2831 # * prompt
2832
2833
2834 if [[ $- == *i* ]]; then
2835
2836
2837   case $HOSTNAME in
2838     bk|je|li)
2839       if [[ $EUID == 1000 ]]; then
2840         system-status _ ||:
2841       fi
2842       ;;
2843   esac
2844
2845
2846   # this needs to come before next ps1 stuff
2847   # this stuff needs bash 4, feb 2009,
2848   # old enough to no longer condition on $BASH_VERSION anymore
2849   shopt -s autocd
2850   shopt -s dirspell
2851   PS1='\w'
2852   if [[ $- == *i* ]]  && [[ ! $LC_INSIDE_EMACS ]]; then
2853     PROMPT_DIRTRIM=2
2854     bind -m vi-command B:shell-backward-word
2855     bind -m vi-command W:shell-forward-word
2856   fi
2857
2858   if [[ $SSH_CLIENT || $SUDO_USER ]]; then
2859     unset PROMPT_DIRTRIM
2860     PS1="\h:$PS1"
2861   fi
2862
2863   # emacs terminal has problems if this runs slowly,
2864   # so I've thrown a bunch of things at the wall to speed it up.
2865   prompt-command() {
2866     local return=$? # this MUST COME FIRST
2867     local ps_char ps_color
2868     unset IFS
2869
2870     if [[ $HISTFILE ]]; then
2871       history -a # save history
2872     fi
2873
2874     case $return in
2875       0) ps_color="$term_purple"
2876          ps_char='\$'
2877          ;;
2878       *) ps_color="$term_green"
2879          ps_char="$return \\$"
2880          ;;
2881     esac
2882     if [[ ! -O . ]]; then # not owner
2883       if [[ -w . ]]; then # writable
2884         ps_color="$term_bold$term_red"
2885       else
2886         ps_color="$term_bold$term_green"
2887       fi
2888     fi
2889
2890     # faster than sourceing the file im guessing
2891     if [[ -e /dev/shm/iank-status && ! -e /tmp/quiet-status ]]; then
2892       eval "$(< /dev/shm/iank-status)"
2893     fi
2894     if [[ $MAIL_HOST && $MAIL_HOST != "$HOSTNAME" ]]; then
2895       ps_char="@ $ps_char"
2896     fi
2897     jobs_char=
2898     if [[ $(jobs -p) ]]; then
2899       jobs_char='j\j '
2900     fi
2901
2902
2903     # allow a function to specify a command to run after we run the next
2904     # command. Use case: a function makes a persistent notification. If
2905     # we happen to be using that terminal, we can just keep working by
2906     # entering our next command, even a noop in order to dismiss the
2907     # notification, instead of having to explicitly dismiss it.
2908     if [[ ${_psrun[@]} ]]; then
2909       if (( _psrun_count >= 1 )); then
2910
2911         "${_psrun[@]}" ||:
2912         _psrun_count=0
2913         unset _psrun
2914       else
2915         _psrun_count=$(( _psrun_count + 1 ))
2916       fi
2917     else
2918       _psrun_count=0
2919     fi
2920
2921     # We could test if sudo is active with sudo -nv
2922     # but then we get an email and log of lots of failed sudo commands.
2923     # We could turn those off, but seems better not to.
2924     if [[ $EUID != 0 ]] && [[ $DID_SUDO ]]; then
2925       psudo="\[$term_bold$term_red\]s\[$term_nocolor\] "
2926     fi
2927     if [[ ! $HISTFILE ]]; then
2928       ps_char="NOHIST $ps_char"
2929     fi
2930     PS1="${PS1%"${PS1#*[wW]}"} $jobs_char$psudo\[$ps_color\]$ps_char\[$term_nocolor\] "
2931
2932     # copy of what is automatically added by guix.
2933     # adds [env] to PS1 if GUIX_ENVIRONMENT is set and PS1 contains '$';
2934     if [ -n "$GUIX_ENVIRONMENT" ]; then
2935       if [[ $PS1 =~ (.*)"\\$" ]]; then
2936         PS1="${BASH_REMATCH[1]} [env]\\\$ "
2937       fi
2938     fi
2939
2940
2941     # set titlebar. instead, using more advanced
2942     # titelbar below
2943     #echo -ne "$_title_escape $HOSTNAME ${PWD/#$HOME/~}  \007"
2944   }
2945   PROMPT_COMMAND=(prompt-command)
2946
2947   if [[ $TERM == screen* ]]; then
2948     _title_escape="\033]..2;"
2949   else
2950     # somme sites recommend this, i dunno what the diff is.
2951     #_title_escape="\033]30;"
2952     _title_escape="\033]0;"
2953   fi
2954
2955   # make the titlebar be the last command and the current directory.
2956   settitle () {
2957
2958
2959     # These are some checks to help ensure we dont set the title at
2960     # times that the debug trap is running other than the case we
2961     # want. Some of them might not be needed.
2962     if (( ${#FUNCNAME[@]} != 1 || ${#BASH_ARGC[@]} != 2 || BASH_SUBSHELL != 0 )); then
2963       return 0
2964     fi
2965     if [[ $1 == prompt-command ]]; then
2966       return 0
2967     fi
2968     echo -ne "$_title_escape ${PWD/#$HOME/~} "
2969     printf "%s" "$*"
2970     echo -ne "\007"
2971   }
2972
2973   # note, this wont work:
2974   # x=$(mktemp); cp a $x
2975   # I havnt figured out why, bigger fish to fry.
2976   #
2977   # for titlebar.
2978   # condition from the screen man page i think.
2979   # note: duplicated in tx()
2980   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2981     trap 'settitle "$BASH_COMMAND"' DEBUG
2982   else
2983     trap DEBUG
2984   fi
2985
2986 fi
2987
2988 # * stuff that makes sense to be at the end
2989
2990
2991 # best practice
2992 unset IFS
2993
2994 if [[ -s "$HOME/.rvm/scripts/rvm" ]]; then
2995   # shellcheck disable=SC1091
2996   source "$HOME/.rvm/scripts/rvm"
2997 fi
2998
2999 # I had this idea to start a bash shell which would run an initial
3000 # command passed through this env variable, then continue on
3001 # interactively. But the use case I had in mind went away.
3002 #
3003 # if [[ $MY_INIT_CMD ]]; then
3004 #   "${MY_INIT_CMD[@]}"
3005 #   unset MY_INIT_CMD
3006 # fi
3007
3008 # ensure no bad programs appending to this file will have an affect
3009 return 0