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 # * include files
 246
 247 if [[ -s $bashrc_dir/path-add-function ]]; then
 248   source $bashrc_dir/path-add-function
 249   if [[ $SSH_CLIENT ]]; then
 250     if grep -qF /home/iank/.iank/e/e /etc/exports &>/dev/null; then
 251       export EMACSDIR=/home/iank/.iank/e/e
 252     fi
 253     path-add $bashrc_dir
 254   fi
 255 fi
 256
 257 # if someone exported $SOE (stop on error), catch errors.
 258 #
 259 # Note, on debian this results in the following warning when in ssh,
 260 # hich I haven't figured out how to fix. It doesn't happen if we source
 261 # after the shell has started
 262 #
 263 # bash: /usr/share/bashdb/bashdb-main.inc: No such file or directory
 264 # bash: warning: cannot start debugger; debugging mode disabled
 265 if [[ $SOE ]]; then
 266   if [[ -e /a/bin/errhandle/err ]]; then
 267     source /a/bin/errhandle/err
 268   fi
 269 fi
 270
 271
 272 mysrc() {
 273   local path dir file
 274   path=$1
 275   dir=${path%/*}
 276   file=${path##*/}
 277   if [[ -s $path ]]; then
 278     # shellcheck disable=SC1090 # this is dynamic, shellcheck can't follow it.
 279     source $path
 280   elif [[ -s $bashrc_dir/$file ]]; then
 281     # shellcheck disable=SC1090 # this is dynamic, shellcheck can't follow it.
 282     source $bashrc_dir/$file
 283   fi
 284 }
 285
 286
 287 mysrc /a/bin/small-misc-bash/ll-function
 288 mysrc /a/bin/distro-functions/src/package-manager-abstractions
 289
 290 # things to remember:
 291 # ALT-C - cd into the selected directory
 292 # CTRL-T - Paste the selected file path into the command line
 293 #
 294 # good guide to some of its basic features is the readme file
 295 # https://github.com/junegunn/fzf
 296
 297 # if [[ -s /usr/share/doc/fzf/examples/key-bindings.bash ]]; then
 298 #   source /usr/share/doc/fzf/examples/key-bindings.bash
 299 # fi
 300
 301 # * functions
 302
 303 ### begin FSF section ###
 304
 305 # Comments before functions are meant to be good useful
 306 # documentation. If they fail at that, please improve them or send Ian a
 307 # note.
 308
 309 ## copy bash completion
 310 # Usage: ORIGINAL_COMMAND TARGET_COMMAND...
 311 #
 312 # It copies how the bash completion works from one command to other
 313 # commands.
 314 ccomp() {
 315   local c src
 316   src=$1
 317   shift
 318   if ! c=$(complete -p $src 2>/dev/null); then
 319     _completion_loader $src &>/dev/null ||:
 320     c=$(complete -p $src 2>/dev/null) || return 0
 321   fi
 322   # remove $src( .*|$)
 323   c=${c% "$src"}
 324   c=${c%% "$src" *}
 325   eval $c $*
 326 }
 327
 328 ## directory history tracking and navigation.
 329 #
 330 # cd becomes a function, also aliased to c. b to go back, f to go
 331 # forward, cl to list recent directories and choose one.
 332 #
 333 # The finer details you may want to skip:
 334 #
 335 # We also define bl to print the list of back and forward directories.
 336 #
 337 # We keep 2 stacks, forward and back. Unlike with a web browser, the
 338 # forward stack is not erased when going somewhere new.
 339 #
 340 # Recent directories are stored in ~/.cdirs.
 341 #
 342 declare -a _dir_forward _dir_back
 343 c() {
 344   # normally, the top of _dir_back is our current dir. if it isn't,
 345   # put it on there, except we don't want to do that when we
 346   # just launched a shell
 347   if [[ $OLDPWD ]]; then
 348     if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 349       _dir_back+=("$PWD")
 350     fi
 351   fi
 352   command cd "$@"
 353   if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 354     _dir_back+=("$PWD")
 355   fi
 356   echo "$PWD" >> ~/.cdirs
 357 }
 358 ccomp cd c
 359
 360 # back
 361 b() {
 362   local top_back
 363   if (( ${#_dir_back[@]} == 0 )); then
 364     echo "nothing left to go back to" >&2
 365     return 0
 366   fi
 367   top_back="${_dir_back[-1]}"
 368
 369   if [[ $top_back == "$PWD" ]] && (( ${#_dir_back[@]} == 1 )); then
 370     echo "already on last back entry" >&2
 371     return 0
 372   fi
 373
 374
 375   if [[ $top_back == "$PWD" ]]; then
 376     # add to dirf if not already there
 377     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$top_back" ]]; then
 378       _dir_forward+=("$top_back")
 379     fi
 380     unset "_dir_back[-1]"
 381     command cd "${_dir_back[-1]}"
 382   else
 383     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$PWD" ]]; then
 384       _dir_forward+=("$PWD")
 385     fi
 386     command cd "$top_back"
 387   fi
 388
 389   # Interesting feature, not sure I want it.
 390   # give us a peek at what is next in the list
 391   # if (( ${#_dir_back[@]} >= 2 )); then
 392   #   printf "%s\n" "${_dir_back[-2]}"
 393   # fi
 394   #
 395
 396   # c/b/f Implementation notes:
 397   #
 398   # The top of the back is $PWD
 399   # as long as the last directory change was due to c,b,or cl.
 400   #
 401   # Example of stack changes:
 402   #
 403   # a b c (d)
 404   ## back
 405   # a b (c)
 406   # d
 407   #back
 408   #a (b)
 409   #d c
 410   #back
 411   #(a)
 412   #d c b
 413   #forward
 414   #a (b)
 415   #d c
 416   #
 417   # a b c
 418   ## back
 419   # a b
 420   # (c)
 421   ## forward
 422
 423 }
 424 # forward
 425 f() {
 426   local top_forward
 427   if (( ${#_dir_forward[@]} == 0 )); then
 428     echo "no forward dir left" >&2
 429     return 0
 430   fi
 431   top_forward="${_dir_forward[-1]}"
 432   unset "_dir_forward[-1]"
 433   c "$top_forward"
 434
 435   # give us a peek at what is next in the list
 436   # if (( ${#_dir_forward[@]} )); then
 437   #   printf "%s\n" "${_dir_forward[-1]}"
 438   # fi
 439 }
 440 # cd list
 441 cl() {
 442   local i line input start
 443   local -A buttondirs alines
 444   local -a buttons dirs lines
 445   buttons=( {a..z} {2..9} )
 446   if [[ ! -s ~/.cdirs ]]; then
 447     echo nothing in ~/.cdirs
 448     return 0
 449   fi
 450
 451   i=0
 452
 453   mapfile -t lines <~/.cdirs
 454   start=$(( ${#lines[@]} - 1 ))
 455
 456   # we have ~33 buttons as of this writing, so lets
 457   # prune down the history every once in a while.
 458   if (( start > 500 )); then
 459     tac ~/.cdirs | awk '!seen[$0]++' | head -n 200 | tac | sponge ~/.cdirs || [[ $? == 141 ]]
 460   fi
 461
 462   for (( j=start; j >= 0; j-- )); do
 463     line="${lines[$j]}"
 464     if [[ ! $line || ${alines[$line]} || ! -d "$line" || $line == "$PWD" || line == "$HOME"  ]]; then
 465       continue
 466     fi
 467     alines[$line]=t
 468     buttondirs[${buttons[i]}]="$line"
 469     printf "%s %s\n" ${buttons[i]} "$line"
 470     if (( i == ${#buttons[@]} - 1 )); then
 471       break
 472     fi
 473     i=$(( i + 1 ))
 474   done
 475
 476   if (( i == 0 )); then
 477     echo "no dirs in ~/.cdirs"
 478     return 0
 479   fi
 480   read -r -N 1 input
 481   if [[ $input != $'\n' ]]; then
 482     c "${buttondirs[$input]}"
 483   fi
 484 }
 485 # back list
 486 bl() {
 487   local start i j max
 488   max=10
 489   start=$(( ${#_dir_back[@]} - 1 ))
 490
 491   # cleanup possible repeating of pwd
 492   if (( start >= 0 )) && [[ ${_dir_back[$start]} == "$PWD" ]]; then
 493     start=$(( start - 1 ))
 494   fi
 495   j=1
 496   if (( start >= 0 )); then
 497     for (( i=start; i >= 0 ; i-- )); do
 498       printf "%s %s\n" $j ${_dir_back[i]}
 499       j=$(( j + 1 ))
 500       if (( j >= max )); then
 501         break
 502       fi
 503     done
 504   fi
 505
 506   max=10
 507   start=$(( ${#_dir_forward[@]} - 1 ))
 508
 509   # cleanup possible repeating of pwd
 510   if (( start >= 0 )) && [[ ${_dir_forward[$start]} == "$PWD" ]]; then
 511     start=$(( start - 1 ))
 512   fi
 513   if (( start < 0 )); then
 514     return 0
 515   fi
 516   echo --
 517   j=1
 518   for (( i=start; i >= 0 ; i-- )); do
 519     printf "%s %s\n" $j ${_dir_forward[i]}
 520     j=$(( j + 1 ))
 521     if (( j >= max )); then
 522       break
 523     fi
 524   done
 525 }
 526
 527 # pee do. run args as a command with output copied to syslog.
 528 #
 529 # Usage: pd [-t TAG] COMMAND...
 530 #
 531 # -t TAG Override the tag in the syslog. The default is COMMAND with
 532 #        any path part is removed, eg. for /bin/cat the tag is cat.
 533 #
 534 # You can view the log via "journalctl -t TAG"
 535 pd() {
 536   local tag ret
 537   ret=0
 538   tag=${1##*/}
 539   case $1 in
 540     -t) tag="$2"; shift 2 ;;
 541   esac
 542   echo "PWD=$PWD command: $*" | logger -t $tag
 543   "$@" |& pee cat "logger -t $tag" || ret=$?
 544   echo "exited with status=$ret" | pee cat "logger -t $tag"
 545   # this avoids any err-catch
 546   (( ret == 0 )) || return $ret
 547 }
 548 ccomp time pd
 549
 550 # jdo = journal do. Run command as transient systemd service, tailing
 551 # its output in the journal until it completes.
 552 #
 553 # Usage: jdo COMMAND...
 554 #
 555 # Compared to pd: commands recognize this is a non-interactive shell.
 556 # The service is unaffected if our ssh connection dies, no need to run
 557 # in screen or tmux.
 558 #
 559 # Note: The last few lines of any existing entries for a unit by that
 560 # name will be output first, and there will be a few second delay at the
 561 # start of the command, and a second or so at the end.
 562 #
 563 # Note: Functions and aliases obviously won't work, we resolve the
 564 # command to a file.
 565 #
 566 # Note: requires running as root.
 567 jdo() {
 568   local cmd cmd_name jr_pid ret
 569   ret=0
 570   cmd="$1"
 571   shift
 572   if [[ $EUID != 0 ]]; then
 573     echo "jdo: error: rerun as root"
 574     return 1
 575   fi
 576   cmd_name=${cmd##*/}
 577   if [[ $cmd != /* ]]; then
 578     cmd=$(type -P "$cmd")
 579   fi
 580   # -q = quiet
 581   journalctl -qn2 -f -u "$cmd_name" &
 582   # Trial and error of time needed to avoid missing initial lines.
 583   # .5 was not reliable. 1 was not reliable. 2 was not reliable
 584   sleep 4
 585   jr_pid=$!
 586   systemd-run --unit "$cmd_name" --wait --collect "$cmd" "$@" || ret=$?
 587   # The sleep lets the journal output its last line
 588   # before the prompt comes up.
 589   sleep .5
 590   kill $jr_pid &>/dev/null ||:
 591   unset jr_pid
 592   fg &>/dev/null ||:
 593   # this avoids any err-catch
 594   (( ret == 0 )) || return $ret
 595 }
 596 ccomp time jdo
 597 #### end fsf section
 598
 599
 600 ..() { c ..; }
 601 ...() { c ../..; }
 602 ....() { c ../../..; }
 603 .....() { c ../../../..; }
 604 ......() { c ../../../../..; }
 605
 606 chere() {
 607   local f path
 608   for f; do
 609     path=$(readlink -e "$f")
 610     echo "cat >$path <<'EOF'"
 611     cat "$f"
 612     echo EOF
 613   done
 614 }
 615
 616
 617 # file cut copy and paste, like the text buffers :)
 618 # I havnt tested these.
 619 _fbufferinit() { # internal use
 620   ! [[ $my_f_tempdir ]] && my_f_tempdir="$(mktemp -d)"
 621   rm -rf "${my_f_tempdir:?}"/*
 622 }
 623 fcp() { # file cp
 624   _fbufferinit
 625   cp "$@" "$my_f_tempdir"/
 626 }
 627 fct() { # file cut
 628   _fbufferinit
 629   mv "$@" "$my_f_tempdir"/
 630 }
 631 fpst() { # file paste
 632   [[ $2 ]] && { echo too many arguments; return 1; }
 633   target=${1:-.}
 634   cp "$my_f_tempdir"/* "$target"
 635 }
 636
 637 _khfix_common() {
 638   local host ip port file key
 639   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" ||: )
 640   file=$(readlink -f ~/.ssh/known_hosts)
 641   if [[ ! $ip ]]; then
 642     echo "khfix: ssh failed"
 643     return 1
 644   fi
 645   if [[ $port != 22 ]]; then
 646     ip_entry="[$ip]:$port"
 647     host_entry="[$host]:$port"
 648   else
 649     ip_entry=$ip
 650     host_entry=$host
 651   fi
 652   if [[ $host != "$ip" ]]; then
 653     key=$(ssh-keygen -F "$host_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 654     if [[ $key ]]; then
 655       grep -Fv "$key" "$file" | sponge "$file"
 656     fi
 657   fi
 658   key=$(ssh-keygen -F "$ip_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 659   if [[ $key ]]; then
 660     grep -Fv "$key" "$file" | sponge "$file"
 661   fi
 662   ll ~/.ssh/known_hosts
 663   rootsshsync
 664 }
 665 khfix() { # known hosts fix
 666   _khfix_common "$@" || return 1
 667   ssh $1 :
 668 }
 669 khcopy() {
 670   _khfix_common "$@"
 671   ssh-copy-id $1
 672 }
 673
 674 # ya, hacky hardcoded hostnames in 2023. we could do better
 675 hssh-update() {
 676   local -a failed_hosts
 677   for host in kd x3.office.fsf.org syw; do
 678     e $host
 679     if ! scp /b/fai/fai/config/files/usr/local/bin/hssh/IANK root@$host:/usr/local/bin/hssh; then
 680       failed_hosts+=($host)
 681     fi
 682   done
 683   if (( ${#failed_hosts[@]} >= 1 )); then
 684     echo failed_hosts=${failed_hosts[*]}
 685     return 1
 686   fi
 687 }
 688
 689 a() {
 690   local x
 691   x=$(readlink -nf "${1:-$PWD}")
 692   # yes, its kinda dumb that xclip/xsel cant do this in one invocation
 693   echo -n "$x" | xclip -selection clipboard
 694   echo -n "$x" | xclip
 695 }
 696
 697 # a1 = awk {print $1}
 698 for field in {1..20}; do
 699   eval a$field"() { awk '{print \$$field}'; }"
 700 done
 701 # h1 = head -n1
 702 for num in {1..9}; do
 703   eval h$num"() { head -n$num; }"
 704 done
 705
 706
 707 hexipv4() {
 708   # shellcheck disable=SC2046 disable=SC2001 disable=SC2183 # hacks, expected
 709   printf '%d.%d.%d.%d\n' $(echo $1 | sed 's/../0x& /g')
 710 }
 711
 712 vp9() {
 713   local f out outdir in fname origdir skip1
 714   origdir="$PWD"
 715   outdir=vp9
 716   skip1=false
 717   while [[ $1 == -* ]]; do
 718     case $1 in
 719       # if we got interrupted after 1st phase
 720       -2)
 721         skip1=true
 722         shift
 723         ;;
 724       --out)
 725         outdir=$2
 726         shift 2
 727         ;;
 728     esac
 729   done
 730   m mkdir -p $outdir
 731   # first pass only uses about 1 cpu, so run in parallel
 732   for f; do
 733     {
 734       fname="${f##*/f}"
 735       if [[ $f == /* ]]; then
 736         in="$f"
 737       else
 738         in=$origdir/$f
 739       fi
 740       out="$origdir/$outdir/$fname"
 741       mkdir -p /tmp/vp9/$fname
 742       cd /tmp/vp9/$fname
 743       if ! $skip1 && [[ ! -s ffmpeg2pass-0.log ]]; then
 744         # -nostdin or else wait causes ffmpeg to go into stopped state. dunno why, random stackoverflow answer.
 745         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
 746       fi
 747       if [[ -e $out ]]; then rm -f $out; fi
 748       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 $out
 749     } &
 750   done
 751   wait -f
 752   cd "$origdir"
 753 }
 754
 755 utcl() { # utc 24 hour time to local hour 24 hour time
 756   echo "print( ($1  $(date +%z | sed -r 's/..$//;s/^(-?)0*/\1/')) % 24)"|python3
 757 }
 758
 759 bwm() {
 760   s bwm-ng -T avg -d
 761 }
 762
 763
 764 # for running in a fai rescue. iank specific.
 765 kdrescue() {
 766   d=vgata-Samsung_SSD_850_EVO_2TB_S2RLNX0J502123D
 767   for f in $d vgata-Samsung_SSD_870_QVO_8TB_S5VUNG0N900656V; do
 768     cryptsetup luksOpen --key-file /p /dev/$f/root crypt-$f-root
 769     cryptsetup luksOpen --key-file /p /dev/$f/o crypt-$f-o
 770   done
 771   mount -o subvol=root_trisquelaramo /dev/mapper/crypt-$d-root /mnt
 772   mount -o subvol=a /dev/mapper/crypt-$d-root /mnt/a
 773   mount -o subvol=o /dev/mapper/crypt-$d-o /mnt/o
 774   mount -o subvol=boot_trisquelaramo /dev/sda2 /mnt/boot
 775   cd /mnt
 776   chrbind
 777 }
 778
 779
 780
 781
 782 c4() { c /var/log/exim4; }
 783
 784 caa() { git commit --amend --no-edit -a; }
 785
 786 cf() {
 787   for f; do
 788     hr
 789     echo "$f"
 790     hr
 791     cat "$f"
 792   done
 793 }
 794 caf() {
 795   # shellcheck disable=SC2033
 796   find -L "$@" -type f -not \( -name .svn -prune -o -name .git -prune \
 797        -o -name .hg -prune -o -name .editor-backups -prune \
 798        -o -name .undo-tree-history -prune \) \
 799        -exec bash -c '. ~/.bashrc; hr; echo "$1"; hr; cat "$1"' _ {} \; 2>/dev/null
 800
 801 }
 802 ccomp cat cf caf
 803
 804 calc() { echo "scale=3; $*" | bc -l; }
 805 # no having to type quotes, but also no command history:
 806 clc() {
 807   local x
 808   read -r x
 809   echo "scale=3; $x" | bc -l
 810 }
 811
 812 cam() {
 813   git commit -am "$*"
 814 }
 815
 816 ccat () { # config cat. see a config without extra lines.
 817   sed -r '/^[[:space:]]*([;#]|--|\/\/|$)/d' "$@"
 818 }
 819 ccomp grep ccat
 820
 821 chrbind() {
 822   local d
 823   # dev/pts needed for pacman signature check
 824   for d in dev proc sys dev/pts; do
 825     [[ -d $d ]]
 826     if ! mountpoint $d &>/dev/null; then
 827       m s mount -o bind /$d $d
 828     fi
 829   done
 830 }
 831 chumount() {
 832   local d
 833   # dev/pts needed for pacman signature check
 834   for d in dev/pts dev proc sys; do
 835     [[ -d $d ]]
 836     if mountpoint $d &>/dev/null; then
 837       m s umount $d
 838     fi
 839   done
 840 }
 841
 842
 843 _cdiff-prep() {
 844   # join options which are continued to multiples lines onto one line
 845   local first=true
 846   while IFS= read -r line; do
 847     # remove leading spaces/tabs. assumes extglob
 848     if [[ $line == "[   ]*" ]]; then
 849       line="${line##+( )}"
 850     fi
 851     if $first; then
 852       pastline="$line"
 853       first=false
 854     elif [[ $line == *=* ]]; then
 855       echo "$pastline" >> "$2"
 856       pastline="$line"
 857     else
 858       pastline="$pastline $line"
 859     fi
 860   done < <(grep -vE '^([ \t]*#|^[ \t]*$)' "$1")
 861   echo "$pastline" >> "$2"
 862 }
 863
 864 cdiff() {
 865   # diff config files,
 866   # setup for format of postfix, eg:
 867   # option = stuff[,]
 868   #    [more stuff]
 869   local pastline unified f1 f2
 870   unified="$(mktemp)"
 871   f1="$(mktemp)"
 872   f2="$(mktemp)"
 873   _cdiff-prep "$1" "$f1"
 874   _cdiff-prep "$2" "$f2"
 875   cat "$f1" "$f2" |  grep -Po '^[^=]+=' | sort | uniq > "$unified"
 876   while IFS= read -r line; do
 877     # the default bright red / blue doesnt work in emacs shell
 878     dwdiff -cblue,red -A best -d "      ," <(grep "^$line" "$f1" || echo ) <(grep "^$line" "$f2" || echo ) | colordiff
 879   done < "$unified"
 880 }
 881
 882
 883 cat-new-files() {
 884   local start=$SECONDS
 885   local dir="$1"
 886   # shellcheck disable=SC2030
 887   inotifywait -m "$dir" -e create -e moved_to | \
 888     while read -r filedir _ file; do
 889       cat "$filedir$file"
 890       hr
 891       calc $((SECONDS - start)) / 60
 892       sleep 5
 893     done
 894
 895 }
 896
 897 chownme() {
 898   s chown -R $USER:$USER "$@"
 899 }
 900
 901 # shellcheck disable=SC2032
 902 chown() {
 903   # makes it so chown -R symlink affects the symlink and its target.
 904   if [[ $1 == -R ]]; then
 905     shift
 906     command chown -h "$@"
 907     command chown -R "$@"
 908   else
 909     command chown "$@"
 910   fi
 911 }
 912
 913 cim() {
 914   git commit -m "$*"
 915 }
 916
 917
 918 d() { builtin bg "$@"; }
 919 ccomp bg d
 920
 921 # f would be more natural, but i already am using it for something
 922 z() { builtin fg "$@"; }
 923 ccomp fg z
 924
 925 x() { builtin kill %%; }
 926
 927 dc() {
 928   diff --strip-trailing-cr -w "$@"   # diff content
 929 }
 930 ccomp diff dc
 931
 932 despace() {
 933   local x y
 934   for x in "$@"; do
 935     y="${x// /_}"
 936     safe_rename "$x" "$y"
 937   done
 938 }
 939
 940 # df progress
 941 # usage: dfp MOUNTPOINT [SECOND_INTERVAL]
 942 # SECOND_INTERVAL defaults to 90
 943 dfp() {
 944   # mp = mountpoint
 945   local a b mp interval
 946   mp=$1
 947   interval=${2:-90}
 948   if [[ ! $mp ]]; then
 949     echo "dfp: error, missing 1st arg" >&2
 950     return 1
 951   fi
 952   while true; do
 953     a=$(df --output=used $mp | tail -n1)
 954     sleep $interval
 955     b=$(df --output=used $mp | tail -n1)
 956     printf "used mib: %'d  mib/min: %s\n" $(( b /1000 )) $(( (b-a) / (interval * 1000 / 60 ) ))
 957   done
 958 }
 959
 960 # get ipv4 ip from HOST. or if it is already a number, return that
 961 hostip() {
 962   local host="$1"
 963   case $host in
 964     [0-9:])
 965       echo "$host"
 966       ;;
 967     *)
 968       getent ahostsv4 "$host" | awk '{ print $1 }' | head -n1
 969       ;;
 970   esac
 971 }
 972
 973 dig() {
 974   command dig +nostats +nocmd "$@"
 975 }
 976 # Output with sections sorted, and removal of query id, so 2 dig outputs can be diffed.
 977 digsort() {
 978   local sec
 979   sec=
 980   dig +nordflag "$@" | sed -r 's/^(;; ->>HEADER<<-.*), id: .*/\1/' | while read -r l; do
 981     if [[ $l == [^\;]* ]]; then
 982       sec+="$l"$'\n'
 983     else
 984       if [[ $sec ]]; then
 985         printf "%s" "$sec" | sort
 986         sec=
 987       fi
 988       printf "%s\n" "$l"
 989     fi
 990   done
 991 }
 992 ccomp dig digsort
 993 # compare digs to the 2 servers
 994 # usage: digdiff @server1 @server2 DIG_ARGS
 995 # note: only the soa master nameserver will respond with
 996 # ra "recursive answer" flag. That difference is meaningless afaik.
 997 digdiff() {
 998   local s1 s2
 999   s1=$1
1000   shift
1001   s2=$1
1002   shift
1003   digsort $s1 "$@" | tee /tmp/digdiff
1004   diff -u /tmp/digdiff <(digsort $s2 "$@")
1005 }
1006
1007 # date in a format i like reading
1008 dt() {
1009   date "+%A, %B %d, %r" "$@"
1010 }
1011 dtr() {
1012   date -R "$@"
1013 }
1014 # date with all digits in a format i like
1015 dtd() {
1016   date +%F_%T% "$@"
1017 }
1018 ccomp date dt dtr dtd
1019
1020 dus() { # du, sorted, default arg of
1021   du -sh ${@:-*} | sort -h
1022 }
1023 ccomp du dus
1024
1025
1026 e() { printf "%s\n" "$*"; }
1027
1028 # echo args
1029 ea() {
1030   if (( ! $# )); then
1031     echo no args
1032   fi
1033   for arg; do
1034     printf "%qEOL\n" "${arg}"
1035     printf "%s" "${arg}" |& hexdump -C
1036   done
1037 }
1038
1039 # echo variables. print var including escapes, etc, like xxd for variable
1040 ev() {
1041   if (( ! $# )); then
1042     echo no args
1043   fi
1044   for arg; do
1045     if [[ -v $arg ]]; then
1046       printf "%qEOL\n" "${!arg}"
1047       printf "%s" "${!arg}" |& hexdump -C
1048     else
1049       echo arg $arg is unset
1050     fi
1051   done
1052 }
1053
1054 ediff() {
1055   [[ ${#@} == 2 ]] || { echo "error: ediff requires 2 arguments"; return 1; }
1056   emacs --eval "(ediff-files \"$1\" \"$2\")"
1057 }
1058
1059 # mail related
1060 # shellcheck disable=SC2120 # we expect to pass arguments in use outside this file
1061 etail() {
1062   ngset
1063   tail -F /var/log/exim4/mainlog /var/log/exim4/*main /var/log/exim4/paniclog /var/log/exim4/*panic -n 200 "$@"
1064   ngreset
1065 }
1066 etailm() {
1067   tail -F /var/log/exim4/mainlog -n 200 "$@"
1068 }
1069 etail2() {
1070   tail -F /var/log/exim4/mymain -n 200 "$@"
1071 }
1072 ccomp tail etail etail2
1073
1074 # ran into this online, trying it out
1075 detach() {
1076   ( "$@" &>/dev/null & disown )
1077 }
1078
1079 showkeys() {
1080   ssh "$@" cat .ssh/authorized_keys{,2}
1081 }
1082
1083
1084 # print exim old pids
1085 eoldpids() {
1086   local configtime pid piduptime now daemonpid
1087   printf -v now '%(%s)T' -1
1088   configtime=$(stat -c%Y /var/lib/exim4/config.autogenerated)
1089   if [[ -s /run/exim4/exim.pid ]]; then
1090     daemonpid=$(cat /run/exim4/exim.pid)
1091   fi
1092   for pid in $(pgrep -f '^/usr/sbin/exim4( |$)'); do
1093     # the daemonpid gets reexeced on HUP (service reloads), keeping its same old timestamp
1094     if [[ $pid == "$daemonpid" ]]; then
1095       continue
1096     fi
1097     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
1098     if (( configtime > now - piduptime )); then
1099       echo $pid
1100     fi
1101   done
1102 }
1103
1104 # exim tail but only watch lines from new pids
1105 etailnew() {
1106   local pid oldpids
1107   for pid in $(eoldpids); do
1108     oldpids+="$pid|"
1109   done
1110   if [[ $oldpids ]]; then
1111     etail | awk '$3 !~ /^\[('"${oldpids%|}"')\]$/'
1112   else
1113     etail
1114   fi
1115 }
1116 # exim watch as old pids go away
1117 ewatchold() {
1118   local configtime pid piduptime now tmpstr
1119   local -i count
1120   local -a oldpids
1121   count=0
1122   while true; do
1123     tmpstr=$(eoldpids)
1124     mapfile -t oldpids <<<"$tmpstr"
1125     if (( ! ${#oldpids[@]} )); then
1126       return
1127     fi
1128     # print the date every 20 iterations
1129     if (( ! count % 20 )); then
1130       date
1131     fi
1132     count+=1
1133     ps -f -p "${oldpids[*]}"
1134     sleep 1
1135   done
1136 }
1137
1138 eless() {
1139   less /var/log/exim4/mainlog
1140 }
1141 ccomp less eless
1142 eqcat() {
1143   exiqgrep -ir.\* -o 60 | while read -r i; do
1144     hlm exim -Mvc $i
1145     echo
1146     hlm exigrep $i /var/log/exim4/mainlog | cat ||:
1147   done
1148 }
1149 eqrmf() {
1150   # other ways to get the list of message ids:
1151   # exim -bp | awk 'NF == 4 {print $3}'
1152   # # this is slower 160ms, vs 60.
1153   # exipick -i
1154   exiqgrep -ir.\* | xargs exim -Mrm
1155 }
1156
1157 econfdevnew() {
1158   rm -rf /tmp/edev
1159   mkdir -p /tmp/edev/etc
1160   cp -ra /etc/exim4 /tmp/edev/etc
1161   cp -ra /etc/alias* /tmp/edev/etc
1162   find /tmp/edev/etc/exim4 -type f -execdir sed -i "s,/etc/,/tmp/edev/etc/,g" '{}' +
1163   econfdev
1164 }
1165 econfdev() {
1166   update-exim4.conf -d /tmp/edev/etc/exim4 -o /tmp/edev/e.conf
1167 }
1168
1169 # exim grep in
1170 # show important information about incoming mail in the exim log
1171 egrin() {
1172   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p' <${1:-/var/log/exim4/mainlog}
1173 }
1174
1175 # 2nd line is message-id:
1176 egrinid() {
1177   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).* id=([^ ]+) T="(.*)" from (<[^ ]+> .*$)/\1 \5\n \3\n \4/p' <${1:-/var/log/exim4/mainlog}
1178 }
1179 etailin() {
1180   tail -F /var/log/exim4/mainlog | sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p'
1181 }
1182
1183
1184
1185
1186 fa() {
1187   # find array. make an array of file names found by find into $x
1188   # argument: find arguments
1189   # return: find results in an array $x
1190   while read -rd ''; do
1191     x+=("$REPLY");
1192   done < <(find "$@" -print0);
1193 }
1194
1195 faf() { # find all files. use -L to follow symlinks
1196   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1197        -o -name .hg -prune -o -name .editor-backups -prune \
1198        -o -name .undo-tree-history -prune \) -type f 2>/dev/null
1199 }
1200
1201 # usage ffconcat FILES_TO_CONCAT OUTPUT_FILE
1202 ffconcat() {
1203   local tmpf
1204   tmpf=$(mktemp)
1205   printf "file '%s'\n" "$1" >$tmpf
1206   while (( $# > 1 )); do
1207     shift
1208     printf "file '%s'\n" "$1" >>$tmpf
1209   done
1210   # https://trac.ffmpeg.org/wiki/Concatenate
1211   ffmpeg -f concat -safe 0 -i $tmpf -c copy "$1"
1212   rm $tmpf
1213 }
1214 ffremux() {
1215   local tmpf tmpd
1216   if (( $# == 0 )); then
1217     echo ffremux error expected args >&2
1218     return 1
1219   fi
1220   tmpd="$(mktemp -d)"
1221   for f; do
1222     tmpf=$tmpd/"${f##*/}"
1223     ffmpeg -i "$f" -c:v copy -c:a copy $tmpf
1224     cat $tmpf >"$f"
1225   done
1226   rm -r $tmpd
1227 }
1228
1229
1230
1231 # absolute path of file/dir without resolving symlinks.
1232 #
1233 # Most of the time, I want this where I would normally use readlink.
1234 # This is what realpath -s does in most cases, but sometimes it
1235 # actually resolves symlinks, at least when they are in /.
1236 #
1237 # Note, if run on a dir, if the final component is relative, it won't
1238 # resolve that. Use the below fpd for that.
1239 #
1240 # note: we could make a variation of this which
1241 # assigns to a variable name using eval, so that we don't have to do
1242 # x=$(fp somepath), which might save subshell overhead and look nice,
1243 # but I'm not going to bother.
1244 fp() {
1245   local initial_oldpwd initial_pwd dir base
1246   initial_oldpwd="$OLDPWD"
1247   initial_pwd="$PWD"
1248   if [[ $1 == */* ]]; then
1249     dir="${1%/*}"
1250     base="/${1##*/}"
1251     # CDPATH because having it set will cause cd to possibly print output
1252     CDPATH='' cd "$dir"
1253     printf "%s%s\n" "$PWD" "$base"
1254     CDPATH='' cd "$initial_pwd"
1255     OLDPWD="$initial_oldpwd"
1256   else
1257     printf "%s/%s\n" "$PWD" "$1"
1258   fi
1259 }
1260 # full path of directory without resolving symlinks
1261 fpd() {
1262   local initial_oldpwd initial_pwd dir
1263   initial_oldpwd="$OLDPWD"
1264   initial_pwd="$PWD"
1265   dir="$1"
1266   CDPATH='' cd "$dir"
1267   printf "%s%s\n" "$PWD" "$base"
1268   cd "$initial_pwd"
1269   OLDPWD="$initial_oldpwd"
1270 }
1271
1272
1273 # mail related
1274 frozen() {
1275   rm -rf /tmp/frozen
1276   sudo mailq |gr frozen|awk '{print $3}' | while read -r id; do
1277     sudo exim -Mvl $id
1278     echo
1279     sudo exim -Mvh $id
1280     echo
1281     sudo exim -Mvb $id
1282     echo -e '\n\n##############################\n'
1283   done | tee -a /tmp/frozen
1284 }
1285 frozenrm() {
1286   local ids=()
1287   while read -r line; do
1288     printf '%s\n' "$line"
1289     ids+=("$(printf '%s\n' "$line" |gr frozen|awk '{print $3}')")
1290   done < <(s mailq)
1291   echo "sleeping for 2 in case you change your mind"
1292   sleep 2
1293   sudo exim -Mrm "${ids[@]}"
1294 }
1295
1296 funce() {
1297   # like -e for functions. returns on error.
1298   # at the end of the function, disable with:
1299   # trap ERR
1300   trap 'echo "${BASH_COMMAND:+BASH_COMMAND=\"$BASH_COMMAND\" }
1301 ${FUNCNAME:+FUNCNAME=\"$FUNCNAME\" }${LINENO:+LINENO=\"$LINENO\"  }\$?=$?"
1302 trap ERR
1303 return' ERR
1304 }
1305
1306 getdir () {
1307   local help="Usage: getdir [--help] PATH
1308 Output the directory of PATH, or just PATH if it is a directory."
1309   if [[ $1 == --help ]]; then
1310     echo "$help"
1311     return 0
1312   fi
1313   if [[ $# -ne 1 ]]; then
1314     echo "getdir error: expected 1 argument, got $#"
1315     return 1
1316   fi
1317   if [[ -d $1 ]]; then
1318     echo "$1"
1319   else
1320     local dir
1321     dir="$(dirname "$1")"
1322     if [[ -d $dir ]]; then
1323       echo "$dir"
1324     else
1325       echo "getdir error: directory does not exist"
1326       return 1
1327     fi
1328   fi
1329 }
1330
1331 git_empty_branch() { # start an empty git branch. carefull, it deletes untracked files.
1332   [[ $# == 1 ]] || { echo 'need a branch name!'; return 1;}
1333   local root
1334   root=$(gitroot) || return 1 # function to set gitroot
1335   builtin cd "$root"
1336   git symbolic-ref HEAD refs/heads/$1
1337   rm .git/index
1338   git clean -fdx
1339 }
1340
1341 # shellcheck disable=SC2120
1342 gitroot() {
1343   local help="Usage: gitroot [--help]
1344 Print the full path to the root of the current git repo
1345
1346 Handles being within a .git directory, unlike git rev-parse --show-toplevel,
1347 and works in older versions of git which did not have that."
1348   if [[ $1 == --help ]]; then
1349     echo "$help"
1350     return
1351   fi
1352   local p
1353   p=$(git rev-parse --git-dir) || { echo "error: not in a git repo" ; return 1; }
1354   [[ $p != /* ]] && p=$PWD
1355   echo "${p%%/.git}"
1356 }
1357
1358 g() {
1359
1360   # todo: patch emacs so it will look elsewhere. this is kinda sad:
1361   # https://emacs.stackexchange.com/questions/4253/how-to-start-emacs-with-a-custom-user-emacs-directory
1362
1363   local args gdb=false
1364
1365   if [[ $EMACSDIR ]]; then
1366     path-add "$EMACSDIR/lib-src" "$EMACSDIR/src"
1367   fi
1368
1369   if [[ $DISPLAY ]]; then
1370     args=-n
1371   fi
1372
1373   if (( $# == 0 )); then
1374     args+=" -c"
1375   fi
1376   # duplicate -c, but oh well
1377   if ! pgrep -u $EUID emacsclient; then
1378     if (( $# == 0 )) && type -p gdb &>/dev/null; then
1379       gdb=true
1380     else
1381       args+=" -c"
1382     fi
1383   fi
1384   if [[ $EMACSDIR ]]; then
1385     # Alter the path here, otherwise the nfs mount gets triggered on the
1386     # first path lookup when emacs is not being used.
1387     # shellcheck disable=SC2098 disable=SC2097 # false positive
1388     PATH="$EMACSDIR/lib-src:$EMACSDIR/src:$PATH" EHOME=$HOME HOME=$EMACSDIR m emacsclient -a "" $args "$@"
1389   else
1390     if $gdb; then
1391       # due to a bug, we cant debug from the start unless we get a new gdb
1392       # https://sourceware.org/bugzilla/show_bug.cgi?id=24454
1393       # m gdb -ex="set follow-fork-mode child" -ex=r -ex=quit --args emacs --daemon
1394       m emacsclient -a "" $args "$@"
1395       sleep 1
1396       cd "/a/opt/emacs-$(distro-name)$(distro-num)"
1397       s gdb -p "$(pgrep -f 'emacs --daemon')" -ex c
1398       cd -
1399     else
1400       m emacsclient -a "" $args "$@"
1401     fi
1402   fi
1403 }
1404
1405 # force terminal version
1406 gn() {
1407   g -n "$@"
1408 }
1409
1410 gmacs() {
1411   # quit will prompt if the program crashes.
1412   gdb -ex=r -ex=quit --args emacs "$@"; r;
1413 }
1414
1415 gdkill() {
1416   # kill the emacs daemon
1417   pk1 emacs --daemon
1418 }
1419
1420 gr() {
1421   grep -iIP --color=auto "$@" || return $?
1422 }
1423 grr() { # grep recursive
1424   # Don't return 1 on nonmatch because this is meant to be
1425   # interactive, not in a conditional.
1426   if [[ ${#@} == 1 ]]; then
1427     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" . || [[ $? == 1 ]]
1428   else
1429     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" || [[ $? == 1 ]]
1430   fi
1431 }
1432 ccomp grep gr grr
1433
1434 rg() { grr "$@"; }
1435 ccomp grep rg
1436
1437 # recursive everything. search for files/dirs and lines. rs = easy chars to press
1438 re() {
1439   local query
1440   query="$1"
1441   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1442        -o -name .hg -prune -o -name .editor-backups -prune \
1443        -o -name .undo-tree-history -prune \) 2>/dev/null | grep -iP --color=auto "$query"
1444   grr -m 5 "$@"
1445 }
1446
1447 # horizontal row. used to break up output
1448 hr() {
1449   local blocks
1450   # 180 is long enough.
1451   blocks=██████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████████
1452   printf "%s\n" "$(tput setaf 5 2>/dev/null ||:)${blocks:0:${COLUMNS:-180}}$(tput sgr0 2>/dev/null||:)"
1453 }
1454 # highlight
1455 hl() {
1456   local col input_len=0
1457   for arg; do
1458     input_len=$((input_len + 1 + ${#arg}))
1459   done
1460   col=$((60 - input_len))
1461   printf "\e[1;97;41m%s" "$*"
1462   if (( col > 0 )); then
1463     # shellcheck disable=SC2046 # needed to work as intended. a better way would be like hr above.
1464     printf "\e[1;97;41m \e[0m%.0s" $(eval echo "{1..${col}}")
1465   fi
1466   echo
1467 }
1468 hlm() { hl "$*";  "$@"; }
1469
1470 hrcat() { local f; for f; do [[ -f $f ]] || continue; hr; echo "$f"; cat "$f"; done }
1471
1472
1473 # get latest hub and run it
1474 # main command to use:
1475 # hub pull-request --no-edit
1476 # --no-edit means to use the first commit\'s message as the pull request message.
1477 # If that fails, try doing
1478 # hub pull-request --no-edit -b UPSTREAM_OWNER:branch
1479 # where branch is usually master. it does the pr against your current branch.
1480 #
1481 # On first use, you input username/pass and it gets an oath token so you dont have to repeat
1482 # it\'s at ~/.config/hub
1483 hub() {
1484   local up uptar updir p re
1485   # example https://github.com/github/hub/releases/download/v2.14.2/hub-linux-amd64-2.14.2.tgz
1486   up=$(wget -q -O- https://api.github.com/repos/github/hub/releases/latest | jq -r .assets[].browser_download_url | grep linux-amd64)
1487   re='[[:space:]]'
1488   if [[ ! $up || $up =~ $re ]]; then
1489     echo "failed to get good update url. got: $up"
1490   fi
1491   uptar=${up##*/}
1492   updir=${uptar%.tgz}
1493   if [[ ! -e /a/opt/$updir ]]; then
1494     rm -rf /a/opt/hub-linux-amd64*
1495     wget -P /a/opt $up
1496     tar -C /a/opt -zxf /a/opt/$uptar
1497     rm -f /a/opt/$uptar
1498   fi
1499   if ! which hub &>/dev/null; then
1500     sudo /a/opt/$updir/install
1501   fi
1502
1503   # save token across computers
1504   if [[ ! -L ~/.config/hub ]]; then
1505     if [[ -e ~/.config/hub  ]]; then
1506       mv ~/.config/hub /p/c/subdir_files/.config/
1507     fi
1508     if [[ -e /p/c/subdir_files/.config/hub ]]; then
1509       conflink
1510     fi
1511   fi
1512   command hub "$@"
1513 }
1514
1515 i() { git "$@"; }
1516 ccomp git i
1517
1518 # git status:
1519 # cvs -qn update
1520
1521 # git checkout FILE
1522 # cvs update -C FILE
1523
1524 # git pull
1525 # cvs up[date]
1526
1527 # potentially useful command translation
1528 # https://fling.seas.upenn.edu/~giesen/dynamic/wordpress/equivalent-commands-for-git-svn-and-cvs/
1529
1530 # importing cvs repo into git using git-cvs package:
1531 # /f/www $ /usr/lib/git-core/git-cvsimport -C /f/www-git
1532
1533 ic() {
1534   # fast commit all
1535   git commit -am "$*"
1536 }
1537
1538 ipp() {
1539   git pull
1540   git push
1541 }
1542
1543 ifn() {
1544   local glob
1545   glob="$1"
1546   shift
1547   find -L "$@" -not \( -name .svn -prune -o -name .git -prune \
1548        -o -name .hg -prune -o -name .editor-backups -prune \
1549        -o -name .undo-tree-history -prune \) -iname "*$glob*" 2>/dev/null
1550 }
1551
1552 ifh() {
1553   # insensitive find here. args are combined into the search string.
1554   # -L = follow symlinks
1555   find -L . -not \( -name .svn -prune -o -name .git -prune \
1556        -o -name .hg -prune -o -name .editor-backups -prune \
1557        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1558 }
1559
1560 ifd() {
1561   # insensitive find directory
1562   find -L . -type d -not \( -name .svn -prune -o -name .git -prune \
1563        -o -name .hg -prune -o -name .editor-backups -prune \
1564        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1565 }
1566
1567
1568 ipdrop() {
1569   sudo iptables -A INPUT -s $1 -j DROP
1570 }
1571
1572
1573 istext() {
1574   grep -Il "" "$@" &>/dev/null
1575 }
1576
1577 pst() {
1578   pstree -apnA
1579 }
1580
1581 jtail() {
1582   journalctl -n 10000 -f "$@"
1583 }
1584 jr() { journalctl "$@" ; }
1585 jrf() { journalctl -f "$@" ; }
1586 jru() {
1587   journalctl -u exim4 _SYSTEMD_INVOCATION_ID="$(systemctl show -p InvocationID --value $1)"
1588 }
1589
1590
1591
1592 l() {
1593   if [[ $PWD == /[iap] ]]; then
1594     command ls -A --color=auto -I lost+found "$@"
1595   else
1596     command ls -A --color=auto "$@"
1597   fi
1598 }
1599
1600 lcn() { locate -i "*$**"; }
1601
1602 lg() { LC_COLLATE=C.UTF-8 ll --group-directories-first "$@"; }
1603
1604 lt() { ll -tr "$@"; }
1605
1606 lld() { ll -d "$@"; }
1607
1608 ccomp ls l lg lt lld ll
1609
1610 # low recursively
1611 lowr() {
1612   local f dirs i a
1613   local -a all
1614   for dirs in false true; do
1615     for f; do
1616       if [[ -d $f ]]; then
1617         all=("$f"/**)
1618         # reverse the order to rename the nested dirs first.
1619         # note: 0 element is the dir itself
1620         for ((i=${#all[@]}-1; i>=1; i--)); do
1621           a="${all[i]}"
1622           if $dirs && [[ -d $a ]]; then
1623             # e dirs low "$a" # debug
1624             low "$a"
1625           elif ! $dirs && [[ ! -d $a && -e $a ]]; then
1626             # debug
1627             # e not dirs low "$a" # debug
1628             low "$a"
1629           fi
1630         done
1631       fi
1632       # just rename all the top level args on the second pass
1633       if $dirs; then
1634         # e final dirs low "$f" # debug
1635         low "$f"
1636       fi
1637     done
1638   done
1639 }
1640
1641 low() {  # make filenames lowercase, remove bad chars
1642   local arg new dir f
1643   for arg; do
1644     arg="${arg%%+(/)}" # remove trailing slashes. assumes we have extglob on.
1645     dir="${arg%/*}"
1646     if (( ${#dir} == ${#arg} )); then
1647       dir=.
1648     fi
1649     f="${arg##*/}"
1650     new="${f,,}" # downcase
1651     # shellcheck disable=SC2031 # seems like a shellcheck bug
1652     new="${new//[^a-zA-Z0-9._-]/_}" # sub bad chars
1653     new="${new#"${new%%[[:alnum:]]*}"}" # remove leading/trailing non-alnum
1654     new="${new%"${new##*[[:alnum:]]}"}"
1655     # remove bad underscores, like __ and _._
1656     new=$(echo $new | sed -r 's/__+/_/g;s/_+([.-])|([.-])_+/\1/g')
1657     safe_rename "$dir/$f" "$dir/$new" || return 1
1658   done
1659   return 0
1660 }
1661
1662 lower() { # make first letter of filenames lowercase.
1663   local x
1664   for x in "$@"; do
1665     if [[ ${x::1} == [A-Z] ]]; then
1666       y=$(tr '[:upper:]' '[:lower:]' <<<"${x::1}")"${x:1}"
1667       safe_rename "$x" "$y" || return 1
1668     fi
1669   done
1670 }
1671
1672
1673 k() { # history search
1674   grep -iP --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | tail -n 80 || [[ $? == 1 ]];
1675 }
1676 ks() { # history search with context
1677   # args are an extended regex used by sed
1678   history | sed -nr "h;s/^\s*(\S+\s+){4}//;/$*/{g;p}" | tail -n 80 || [[ $? == 1 ]];
1679 }
1680 ksu() { # history search unique
1681   grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | uniq || [[ $? == 1 ]];
1682 }
1683
1684 # todo: id like to do maybe a daily or hourly cronjob to
1685 # check that my history file size is increasing. Ive had it
1686 # inexplicably truncated in the past.
1687 histrm() {
1688   history -n
1689   HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/'
1690   read -r -p "press anything but contrl-c to delete"
1691   for entry in $(HISTTIMEFORMAT='' history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/ { print a }' | tac); do
1692     history -d $entry
1693   done
1694   history -w
1695 }
1696
1697 ccomp grep k ks ksu histrm
1698
1699
1700 make-targets() {
1701   # show make targets, via http://stackoverflow.com/questions/3063507/list-goals-targets-in-gnu-make
1702   make -qp | awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ {split($1,A,/ /);for(i in A)print A[i]}'
1703 }
1704
1705 mkc() {
1706   mkdir "$1"
1707   c "$1"
1708 }
1709 ccomp mkdir mkc
1710
1711 mkct() {
1712   mkc "$(mktemp -d)"
1713 }
1714 # mkdir the last arg, cp the rest into it
1715 mkcp() {
1716   mkdir -p "${@: -1}"
1717   cp "${@:1:$#-1}" "${@: -1}"
1718 }
1719 mkmv() {
1720   mkdir -p "${@: -1}"
1721   mv "${@:1:$#-1}" "${@: -1}"
1722 }
1723
1724 mkt() { # mkdir and touch file
1725   local path="$1"
1726   mkdir -p "$(dirname "$path")"
1727   touch "$path"
1728 }
1729
1730 # shellcheck disable=SC2032
1731 mkdir() { command mkdir -p "$@"; }
1732
1733 nags() {
1734   # https://github.com/HenriWahl/Nagstamon/issues/357
1735   if ! pgrep -f /usr/lib/notification-daemon/notification-daemon >/dev/null; then
1736     /usr/lib/notification-daemon/notification-daemon &
1737   fi
1738   /usr/bin/nagstamon &
1739 }
1740
1741 nmt() {
1742   # cant use s because sudo -i doesnt work for passwordless sudo command
1743   case $EUID in
1744     0)
1745       sudo nmtui-connect "$@"
1746       ;;
1747     *)
1748       nmtui-connect "$@"
1749       ;;
1750   esac
1751 }
1752
1753
1754 ngset() {
1755   if shopt nullglob >/dev/null; then
1756     ngreset=false
1757   else
1758     shopt -s nullglob
1759     ngreset=true
1760   fi
1761 }
1762 ngreset() {
1763   if $ngreset; then
1764     shopt -u nullglob
1765   fi
1766 }
1767
1768 nopanic() {
1769   # shellcheck disable=SC2024
1770   ngset
1771   for f in /var/log/exim4/paniclog /var/log/exim4/*panic; do
1772     base=${f##*/}
1773     if [[ -s $f ]]; then
1774       echo ================== $f =============
1775       s tee -a /var/log/exim4/$base-archive <$f
1776       s truncate -s0 $f
1777     fi
1778   done
1779   ngreset
1780 }
1781
1782
1783 ping() { command ping -O "$@"; }
1784 p8() { ping "$@" 8.8.8.8; }
1785 p6() { ping6 "$@" 2001:4860:4860::8888; }
1786
1787 pkx() { # package extract
1788   local pkg cached tmp f
1789   c "$(mktemp -d)"
1790   pkg=$1
1791   # shellcheck disable=SC2012
1792   cached=$(ls -t /var/cache/apt/archives/$pkg* | tail -n1 2>/dev/null) ||:
1793   if [[ $cached ]]; then
1794     cp $cached .
1795   else
1796     aptitude download $pkg || return 1
1797   fi
1798   tmp=(*); f=${tmp[0]} # only 1 expected
1799   ex $f
1800   rm -f $f
1801 }
1802
1803 # pgrep and kill
1804 pk1() {
1805   local tmpf
1806   local -a pids
1807   tmpf=$(pgrep -f "$*")
1808   mapfile -t pids <<<"$tmpf"
1809   case ${#pids[@]} in
1810     1)
1811       # shellcheck disable=SC2128
1812       {
1813         ps -F ${pids[0]}
1814         m kill ${pids[0]}
1815       }
1816       ;;
1817     0) echo "no pid found" ;;
1818     *)
1819       ps -F ${pids[@]}
1820       ;;
1821   esac
1822 }
1823
1824 psg () {
1825   local x y help
1826   help="Usage: psg [--help] GREP_ARGS
1827 grep ps and output in a nice format"
1828   if [[ $1 == --help ]]; then
1829     echo "$help"
1830     return
1831   fi
1832   x=$(ps -eF)
1833   # final grep is because some commands tend to have a lot of trailing spaces
1834   y=$(echo "$x" | grep -iP "$@" | grep -o '.*[^ ]') ||:
1835   if [[ $y ]]; then
1836     echo "$x" | head -n 1 || [[ $? == 141 ]]
1837     echo "$y"
1838   fi
1839 }
1840
1841 pubip() { curl -4s https://icanhazip.com; }
1842 pubip6() { curl -6s https://icanhazip.com; }
1843 whatismyip() { pubip; }
1844
1845
1846 q() { # start / launch a program in the backround and redir output to null
1847   "$@" &> /dev/null &
1848 }
1849
1850 # shellcheck disable=SC2120
1851 r() {
1852   if [[ $HISTFILE ]]; then
1853     history -a # save history
1854   fi
1855   trap ERR # this avoids a segfault
1856   exit ${1:0}
1857   # i had this redir, not sure why
1858   #  exit "$@" 2>/dev/null
1859 }
1860
1861 # scp is insecure and deprecated.
1862 scp() {
1863   rsync -Pt --inplace "$@"
1864 }
1865 ccomp rsync scp
1866
1867 randport() {
1868   # available high ports are 1024-65535,
1869   # but lets skip things that are more likely to be in use
1870   python3 <<'EOF'
1871 import secrets
1872 print(secrets.SystemRandom().randrange(10002,65500))
1873 EOF
1874 }
1875
1876 # reapply bashrc
1877 reb() {
1878   # shellcheck disable=SC1090 # expected to not follow
1879   source ~/.bashrc
1880 }
1881
1882 rl() {
1883   readlink -f "$@"
1884 }
1885 ccomp readlink rl
1886
1887 rsd() {
1888   # rsync, root is required to keep permissions right.
1889   # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
1890     #                                   --no-times --delete
1891   # basically, make an exact copy, use checksums instead of file times to be more accurate
1892   rsync -ahvic --delete "$@"
1893 }
1894 rsa() {
1895   # like rlu, but dont delete files on the target end which
1896   # do not exist on the original end.
1897   rsync -ahvic "$@"
1898 }
1899 rst() {
1900   # rl without preserving modification time.
1901   rsync -ahvic --delete --no-t "$@"
1902 }
1903 # [RSYNC_OPTS] HOST PATH
1904 rsu() {
1905   # eg. rsu -opts frodo /testpath
1906   # relative paths will expanded with readlink -f.
1907   opts=("${@:1:$#-2}") #  1 to last -2
1908   path="${*:$#}" # last
1909   host="${*:$#-1:1}" # last -1
1910   if [[ $path == .* ]]; then
1911     path=$(readlink -f $path)
1912   fi
1913   m rsync -ahvi --relative --no-implied-dirs "${opts[@]}" "$path" "root@$host:/";
1914 }
1915 ccomp rsync rsd rsa rst rsu
1916
1917 # find programs listening on a port
1918 ssp() {
1919   local port=$1
1920   # to figure out these args, i had to look at the man page from git version, as of 2022-04.
1921   s ss -lpn state listening sport = $port
1922 }
1923
1924 resolvcat() {
1925   local f
1926   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1927     m s nscd -i hosts
1928   fi
1929   f=/etc/resolv.conf
1930   echo $f:;  ccat $f
1931   hr; s ss -lpn sport = 53
1932   if systemctl is-enabled dnsmasq &>/dev/null || [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1933     # this will fail is dnsmasq is failed
1934     hr; m ser status dnsmasq | cat || :
1935     f=/etc/dnsmasq.conf
1936     hr; echo $f:;  ccat $f
1937     hr; m grr '^ *(servers-file|server) *=|^ *no-resolv *$' /etc/dnsmasq.conf /etc/dnsmasq.d
1938     f=/etc/dnsmasq-servers.conf
1939     hr; echo $f:;  ccat $f
1940   fi
1941   hr
1942   echo /etc/nsswitch.conf:
1943   grep '^ *hosts:' /etc/nsswitch.conf
1944   if systemctl is-enabled systemd-resolved &>/dev/null || [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
1945     hr; m ser status systemd-resolved | cat || :
1946     hr; m resolvectl status | cat
1947   fi
1948
1949 }
1950 rcat() {
1951   resolvcat | less
1952 }
1953 reresolv() {
1954   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1955     m ser stop nscd
1956     sleep .5
1957     m ser start nscd
1958     m sudo nscd -i hosts
1959   fi
1960   if [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1961     m sudo systemctl restart dnsmasq
1962   fi
1963   if [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
1964     m sudo systemctl restart systemd-resolved
1965   fi
1966   if type -P resolvectl &>/dev/null; then
1967     resolvectl flush-caches
1968   fi
1969 }
1970
1971 # add annoyingly long argument which should be the default
1972 sedi() {
1973   sed -i --follow-symlinks "$@"
1974 }
1975
1976 rmstrips() {
1977   ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
1978 }
1979
1980 urun () {
1981   umask $1
1982   shift
1983   "$@"
1984 }
1985 sudo () {
1986   command sudo "$@" || return $?
1987   DID_SUDO=true
1988 }
1989 s() {
1990   # background
1991   # I use a function because otherwise we cant use in a script,
1992   # cant assign to variable.
1993   #
1994   # note: gksudo is recommended for X apps because it does not set the
1995   # home directory to the same, and thus apps writing to ~ fuck things up
1996   # with root owned files.
1997   #
1998   if [[ $EUID != 0 || $1 == -* ]]; then
1999     # shellcheck disable=SC2034
2000     SUDOD="$PWD" command sudo -i "$@"
2001     DID_SUDO=true
2002   else
2003     "$@"
2004   fi
2005 }
2006 sb() { # sudo bash -c
2007   # use sb instead of s is for sudo redirections,
2008   # eg. sb 'echo "ok fine" > /etc/file'
2009   # shellcheck disable=SC2034
2010   local SUDOD="$PWD"
2011   sudo -i bash -c "$@"
2012 }
2013 # secret sudo
2014 se() { s urun 0077 "$@"; }
2015 ccomp sudo s sb se
2016
2017 safe_rename() { # warn and dont rename if file exists.
2018   # mv -n exists, but it\'s silent
2019   if [[ $# != 2 ]]; then
2020     echo safe_rename error: $# args, need 2 >&2
2021     return 1
2022   fi
2023   if [[ $1 != "$2" ]]; then # yes, we want to silently ignore this
2024     if [[ -e $2 || -L $2 ]]; then
2025       echo "Cannot rename $1 to $2 as it already exists."
2026     else
2027       mv -vi "$1" "$2"
2028     fi
2029   fi
2030 }
2031
2032
2033 sd() {
2034   sudo dd status=none of="$1"
2035 }
2036
2037 ser() {
2038   if type -p systemctl &>/dev/null; then
2039     s systemctl "$@"
2040   else
2041     if (( $# >= 3 )); then
2042       echo iank: ser expected 2 or less arguments
2043       return 1
2044     fi
2045     s service $2 $1
2046   fi
2047 }
2048 serstat() {
2049   systemctl -n 40 status "$@"
2050 }
2051
2052 seru() { systemctl --user "$@"; }
2053 # like restart, but do nothing if its not already started
2054 srestart() {
2055   local service=$1
2056   if [[ $(s systemctl --no-pager show -p ActiveState $service ) == ActiveState=active ]]; then
2057     systemctl restart $service
2058   fi
2059 }
2060
2061 setini() { # set a value in a .ini style file
2062   key="$1" value="$2" section="$3" file="$4"
2063   if [[ -s $file ]]; then
2064     sed -ri -f - "$file" <<EOF
2065 # remove existing keys
2066 / *\[$section\]/,/^ *\[[^]]+\]/{/^\s*${key}[[:space:]=]/d}
2067 # add key
2068 /^\s*\[$section\]/a $key=$value
2069 # from section to eof, do nothing
2070 /^\s*\[$section\]/,\$b
2071 # on the last line, if we haven't found section yet, add section and key
2072 \$a [$section]\\
2073 $key=$value
2074 EOF
2075   else
2076     cat >"$file" <<EOF
2077 [$section]
2078 $key=$value
2079 EOF
2080   fi
2081 }
2082
2083 sgo() { # service go
2084   service=$1
2085   ser restart $service || return 1
2086   if type -p systemctl &>/dev/null; then
2087     ser enable $service
2088   fi
2089 }
2090 soff () {
2091   for service; do
2092     # ignore services that dont exist
2093     if systemctl cat $service &>/dev/null; then
2094       ser stop $service;
2095       ser disable $service
2096     fi
2097   done
2098 }
2099
2100 sgu() {
2101   systemctl list-unit-files | rg "$@"
2102 }
2103
2104
2105 sk() {
2106
2107
2108   # disable a warning with:
2109   # shellcheck disable=SC2206 # reasoning
2110
2111   # see bash-template/style-guide.md for justifications
2112
2113   local quotes others
2114   quotes=2048,2068,2086,2206
2115   others=2029,2033,2054,2164
2116   shellcheck -W 999 -x -e $quotes,$others "$@" || return $?
2117 }
2118
2119
2120 # sl: ssh, but firsh rsync our bashrc and related files to a special
2121 # directory on the remote host if needed.
2122
2123 # Some environment variables and files need to be setup for this to work
2124 # (mine are set at the beginning of this file)
2125
2126 # SL_FILES_DIR: Environment variable. Path to folder which should at
2127 # least have a .bashrc file or symlink. This dir will be rsynced to ~ on
2128 # remote hosts (top level symlinks are resolved) unless the host already
2129 # has a $SL_FILES_DIR/.bashrc. In that case, we assume it is a host you
2130 # control and sync files to separately and already has the ~/.bashrc you
2131 # want. The remote bash will also take its .inputrc config from this
2132 # folder (default of not existing is fine). Mine looks like this:
2133 # https://iankelling.org/git/?p=distro-setup;a=tree;f=sl/.iank
2134
2135 # SL_INFO_DIR: Environment variable. This folder stores info about what
2136 # we detected on the remote system and when we last synced. It will be created
2137 # if it does not exist. Sometimes you may want to forget about a
2138 # remote system, you can use sl --rsync, or the function for that slr
2139 # below.
2140
2141 # SL_TEST_CMD: Env var. Meant to be used to vary the files synced
2142 # depending on the remote host. Run this string on the remote host the
2143 # first time sl is run (or if we run slr). The result is passed to
2144 # SL_TEST_HOOK. For example,
2145 # export SL_TEST_CMD=". /etc/os-release ; echo \${VERSION//[^a-zA-Z0-9]/}"
2146
2147 # SL_TEST_HOOK: Env var. It is run as $SL_TEST_HOOK. This can set
2148 # $SL_FILES_DIR to vary the files synced.
2149
2150 # SL_RSYNC_ARGS: Env var. String of arguments passed to rsync. For
2151 # example to exclude files within a directory. Note, excluded
2152 # files wont be deleted on rsync, you can add --delete-excluded
2153 # to the rsync command if that is desired.
2154
2155 # SL_SSH_ARGS: Env var. Default arguments passed to ssh.
2156
2157 # For when ~/.bashrc is already customized on the remote server, you
2158 # might find it problematic that ~/.bashrc is sourced for ALL ssh
2159 # commands, even in scripts. This paragraph is all about that. bash
2160 # scripts dont source ~/.bashrc, but call ssh in scripts and you get
2161 # ~/.bashrc. You dont want this. .bashrc is meant for interactive shells
2162 # and if you customize it, probably has bugs from time to time. This is
2163 # bad. Here's how I fix it. I have a special condition to "return" in my
2164 # .bashrc for noninteractive ssh shells (copy that code). Then use this
2165 # function or similar that passes LC_USEBASHRC=t when sshing and I want
2166 # my bashrc. Also, I don't keep most of my bashrc in .bashrc, i source a
2167 # separate file because even if I return early on, the whole file gets
2168 # parsed which can fail if there is a syntax error.
2169 sl() {
2170   # Background on LC_USEBASHRC var (no need to read if you just want to
2171   # use this function): env variables sent across ssh are strictly
2172   # limited, but we get LC_* at least in debian based machines, so we
2173   # just make that * be something no normal program would use. Note, on
2174   # hosts that dont allow LC_* I start an inner shell with LC_USEBASHRC
2175   # set, and the inner shell also allows running a nondefault
2176   # .bashrc. This means the outer shell still ran the default .bashrc,
2177   # but that is the best we can do.
2178
2179   local now args remote dorsync haveinfo tmpa sshinfo tmp tmp2 type info_sec force_rsync \
2180         sync_dirname testcmd extra_info testbool files_sec sl_test_cmd sl_test_hook
2181   declare -a args tmpa
2182
2183   args=($SL_SSH_ARGS)
2184
2185   # ssh [-1246Antivivisectionist] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port]
2186   # [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11] [-i identity_file] [-L address]
2187   # [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port] [-Q query_option]
2188   # [-R address] [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]] [user@]hostname
2189   # [command]
2190
2191   # ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
2192   # [-D [bind_address:]port] [-E log_file] [-e escape_char]
2193   # [-F configfile] [-I pkcs11] [-i identity_file]
2194   # [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
2195   # [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address]
2196   # [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
2197
2198   force_rsync=false
2199   if [[ $1 == --rsync ]]; then
2200     force_rsync=true
2201     shift
2202   fi
2203   # shellcheck disable=SC2153 # intentional
2204   sl_test_cmd=$SL_TEST_CMD
2205   # shellcheck disable=SC2153 # intentional
2206   sl_test_hook=$SL_TEST_HOOK
2207   # shellcheck disable=SC2153 # intentional
2208   sl_rsync_args=$SL_RSYNC_ARGS
2209   while [[ $1 ]]; do
2210     case "$1" in
2211       --rsync)
2212         force_rsync=true
2213         ;;
2214       --sl-test-cmd)
2215         sl_test_cmd="$2"
2216         shift
2217         ;;
2218       --sl-test-hook)
2219         sl_test_hook="$2"
2220         shift
2221         ;;
2222       --sl-rsync-args)
2223         sl_rsync_args="$2"
2224         shift
2225         ;;
2226       *)
2227         break
2228         ;;
2229     esac
2230     shift
2231   done
2232
2233   while [[ $1 ]]; do
2234     case "$1" in
2235       # note we dont support things like -4oOption
2236       -[46AaCfGgKkMNnqsTtVvXxYy]*)
2237         args+=("$1"); shift
2238         ;;
2239       -[bcDEeFIiJLlmOopQRSWw]*)
2240         # -oOption etc is valid
2241         if (( ${#1} >= 3 )); then
2242           args+=("$1"); shift
2243         else
2244           args+=("$1" "$2"); shift 2
2245         fi
2246         ;;
2247       *)
2248         break
2249         ;;
2250     esac
2251   done
2252   remote="$1"
2253   if [[ ! $remote ]]; then
2254     echo $0: error hostname required >&2
2255     return 1
2256   fi
2257   shift
2258
2259   if [[ ! $SL_INFO_DIR  ]]; then
2260     echo 'error: missing SL_INFO_DIR env var' >&2
2261     return 1
2262   fi
2263
2264   dorsync=false
2265   haveinfo=false
2266   tmpa=($SL_INFO_DIR/???????????"$remote")
2267   sshinfo=${tmpa[0]}
2268   if [[ -e $sshinfo ]]; then
2269     if $force_rsync; then
2270       rm -f $sshinfo
2271     else
2272       haveinfo=true
2273     fi
2274   fi
2275   if $haveinfo; then
2276     tmp=${sshinfo[0]##*/}
2277     tmp2=${tmp::11}
2278     type=${tmp2: -1}
2279     extra_info=$(cat $sshinfo)
2280   else
2281     # we test for string to know ssh succeeded
2282     testbool="test -e $SL_FILES_DIR/.bashrc -a -L .bashrc -a -v LC_USEBASHRC"
2283     testcmd="if $testbool; then printf y; else printf n; fi"
2284     if ! tmp=$(LC_USEBASHRC=y command ssh "${args[@]}" "$remote" "$testcmd; $sl_test_cmd"); then
2285       echo failed sl test. doing plain ssh -v
2286       command ssh -v "${args[@]}" "$remote"
2287     fi
2288     if [[ $tmp == y* ]]; then
2289       type=a
2290     else
2291       dorsync=true
2292       type=b
2293     fi
2294     extra_info="${tmp:1}"
2295   fi
2296   if [[ $sl_test_hook ]]; then
2297     RSYNC_RSH="ssh ${args[*]}" $sl_test_hook "$extra_info" "$remote"
2298   fi
2299
2300   if $haveinfo && [[ $type == b ]]; then
2301     info_sec=${tmp::10}
2302     read -r files_sec _ < <(find -L $SL_FILES_DIR -printf "%T@ %p\n" | sort -nr || [[ $? == 141 || ${PIPESTATUS[0]} == 32 ]]  )
2303     files_sec=${files_sec%%.*}
2304     if (( files_sec > info_sec )); then
2305       dorsync=true
2306       rm -f $sshinfo
2307     fi
2308   fi
2309
2310   sync_dirname=${SL_FILES_DIR##*/}
2311
2312   if [[ ! $SL_FILES_DIR  ]]; then
2313     echo 'error: missing SL_FILES_DIR env var' >&2
2314     return 1
2315   fi
2316
2317   if $dorsync; then
2318     RSYNC_RSH="ssh ${args[*]}" m rsync -rptL --delete $sl_rsync_args $SL_FILES_DIR "$remote":
2319   fi
2320   if $dorsync || ! $haveinfo; then
2321     sshinfo=$SL_INFO_DIR/$EPOCHSECONDS$type"$remote"
2322     [[ -e $SL_INFO_DIR ]] || mkdir -p $SL_INFO_DIR
2323     printf "%s\n" "$extra_info" >$sshinfo
2324     chmod 666 $sshinfo
2325   fi
2326   if [[ $type == b ]]; then
2327     if (( ${#@} )); then
2328       # Theres a couple ways to pass arguments, im not sure whats best,
2329       # but relying on bash 4.4+ escape quoting seems most reliable.
2330       command ssh "${args[@]}" "$remote" \
2331               LC_USEBASHRC=t bash -c '.\ '$sync_dirname'/.bashrc\;"\"\$@\""' bash ${@@Q}
2332     elif [[ ! -t 0 ]]; then
2333       # This case is when commands are being piped to ssh.
2334       # Normally, no bashrc gets sourced.
2335       # But, since we are doing all this, lets source it because we can.
2336       cat <(echo . $sync_dirname/.bashrc) - | command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2337     else
2338       command ssh -t "${args[@]}" "$remote" LC_USEBASHRC=t INPUTRC=$sync_dirname/.inputrc bash --rcfile $sync_dirname/.bashrc
2339     fi
2340   else
2341     if [[ -t 0 ]]; then
2342       LC_USEBASHRC=t command ssh "${args[@]}" "$remote" ${@@Q}
2343     else
2344       command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2345     fi
2346   fi
2347   # this function inspired from https://github.com/Russell91/sshrc
2348 }
2349
2350 slr() {
2351   sl --rsync "$@"
2352 }
2353 sss() { # ssh solo
2354   sl -oControlMaster=no -oControlPath=/ "$@"
2355 }
2356 # kill off old shared socket then ssh
2357 ssk() {
2358   m ssh -O exit "$@" || [[ $? == 255 ]]
2359   m sl "$@"
2360 }
2361 ccomp ssh sl slr sss ssk
2362 # plain ssh
2363 ssh() {
2364   if [[ $TERM == alacritty || $TERM == xterm-kitty ]]; then
2365     TERM=xterm-256color LC_USEBASHRC=t command ssh "$@"
2366   else
2367     LC_USEBASHRC=t command ssh "$@"
2368   fi
2369 }
2370
2371
2372 slog() {
2373   # log with script. timing is $1.t and script is $1.s
2374   # -l to save to ~/typescripts/
2375   # -t to add a timestamp to the filenames
2376   local logdir do_stamp arg_base
2377   (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
2378   logdir="/a/dt/"
2379   do_stamp=false
2380   while getopts "lt" option
2381   do
2382     case $option in
2383       l) arg_base=$logdir ;;
2384       t) do_stamp=true ;;
2385       *)
2386         echo error: bad option
2387         return 1
2388         ;;
2389     esac
2390   done
2391   shift $((OPTIND - 1))
2392   arg_base+=$1
2393   [[ -e $logdir ]] || mkdir -p $logdir
2394   $do_stamp && arg_base+=$(date +%F.%T%z)
2395   script -t $arg_base.s 2> $arg_base.t
2396 }
2397 splay() { # script replay
2398   #logRoot="$HOME/typescripts/"
2399   #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
2400   scriptreplay "$1.t" "$1.s"
2401 }
2402
2403 sr() {
2404   # sudo redo. be aware, this command may not work right on strange distros or earlier software
2405   if [[ $# == 0 ]]; then
2406     sudo -E bash -c -l "$(history -p '!!')"
2407   else
2408     echo this command redos last history item. no argument is accepted
2409   fi
2410 }
2411
2412 srm () {
2413   # with -ll, less secure but faster.
2414   command srm -ll "$@"
2415 }
2416
2417 srun() {
2418   scp $2 $1:/tmp
2419   ssh $1 "/tmp/${2##*/}" "$(printf "%q\n" "${@:2}")"
2420 }
2421
2422
2423 swap() {
2424   local tmp
2425   tmp=$(mktemp)
2426   mv $1 $tmp
2427   mv $2 $1
2428   mv $tmp $2
2429 }
2430
2431 tclock() { # terminal clock
2432   local x
2433   clear
2434   date +%l:%_M
2435   len=60
2436   # this goes to full width
2437   #len=${1:-$((COLUMNS -7))}
2438   x=1
2439   while true; do
2440     if (( x == len )); then
2441       end=true
2442       d="$(date +%l:%_M)   "
2443     else
2444       end=false
2445       d=$(date +%l:%M:%_S)
2446     fi
2447     echo -en "\r"
2448     echo -n "$d"
2449     for ((i=0; i<x; i++)); do
2450       if (( i % 6 )); then
2451         echo -n _
2452       else
2453         echo -n .
2454       fi
2455     done
2456     if $end; then
2457       echo
2458       x=1
2459     else
2460       x=$((x+1))
2461     fi
2462     sleep 5
2463   done
2464 }
2465
2466
2467 te() {
2468   # test existence / exists
2469   local ret=0
2470   for x in "$@"; do
2471     [[ -e "$x" || -L "$x" ]] || ret=1
2472   done
2473   return $ret
2474 }
2475
2476 psoff() {
2477   # normally, i would just execute these commands in the function.
2478   # however, DEBUG is not inherited, so we need to run it outside a function.
2479   # And we want to run set -x afterwards to avoid spam, so we cram everything
2480   # in here, and then it will run after this function is done.
2481   # # set as array to satisfy shellcheck, but it is equivalent to setting it as non-array
2482   PROMPT_COMMAND=('trap DEBUG; unset PROMPT_COMMAND; PS1="\w \$ "')
2483 }
2484 pson() {
2485   PROMPT_COMMAND=(prompt-command)
2486   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2487     trap 'settitle "$BASH_COMMAND"' DEBUG
2488   fi
2489 }
2490
2491 # prometheus node curl
2492 pnodecurl() {
2493   local host
2494   host=${1:-127.0.0.1}
2495   s curl --cert-type PEM --cert /etc/prometheus/ssl/prometheus_cert.pem --key /etc/prometheus/ssl/prometheus_key.pem --cacert /etc/prometheus/ssl/prom_node_cert.pem --resolve prom_node:9100:$host -v https://prom_node:9100/metrics
2496 }
2497
2498 tx() { # toggle set -x, and the prompt so it doesnt spam
2499   if [[ $- == *x* ]]; then
2500     set +x
2501     pson
2502   else
2503     psoff
2504   fi
2505 }
2506
2507 psnetns() {
2508   # show all processes in the network namespace $1.
2509   # blank entries appear to be subprocesses/threads
2510   local x netns
2511   netns=$1
2512   ps -w | head -n 1
2513   sudo find -L /proc/[1-9]*/task/*/ns/net -samefile /run/netns/$netns | cut -d/ -f5 | \
2514     while read -r l; do
2515       x=$(ps -w --no-headers -p $l);
2516       if [[ $x ]]; then echo "$x"; else echo $l; fi;
2517     done
2518 }
2519 nonet() {
2520   if ! s ip netns list | grep -Fx nonet &>/dev/null; then
2521     s ip netns add nonet
2522   fi
2523   sudo -E env /sbin/ip netns exec nonet sudo -E -u iank /bin/bash
2524 }
2525
2526 m() { printf "%s\n" "$*";  "$@"; }
2527
2528 # update file. note: duplicated in mail-setup.
2529 # updates $ur u result to true or false
2530 # updates $reload to true if file updated is in /etc/systemd/system
2531 u() {
2532   local tmp tmpdir dest="$1"
2533   local base="${dest##*/}"
2534   local dir="${dest%/*}"
2535   if [[ $dir != "$base" ]]; then
2536     # dest has a directory component
2537     mkdir -p "$dir"
2538   fi
2539   # shellcheck disable=SC2034 # see comment at top of function
2540   ur=false # u result
2541   tmpdir="$(mktemp -d)"
2542   cat >$tmpdir/"$base"
2543   tmp=$(rsync -ic $tmpdir/"$base" "$dest")
2544   if [[ $tmp ]]; then
2545     printf "%s\n" "$tmp"
2546     # shellcheck disable=SC2034 # see comment at top of function
2547     ur=true
2548     if [[ $dest == /etc/systemd/system/* ]]; then
2549       # shellcheck disable=SC2034 # see comment at top of function
2550       reload=true
2551     fi
2552   fi
2553   rm -rf $tmpdir
2554 }
2555
2556
2557 uptime() {
2558   if type -p uprecords &>/dev/null; then
2559     uprecords -B
2560   else
2561     command uptime
2562   fi
2563 }
2564
2565 virshrm() {
2566   for x in "$@"; do virsh destroy "$x"; virsh undefine "$x"; done
2567 }
2568
2569 vm-set-listen(){
2570   local t
2571   t=$(mktemp)
2572   local vm=$1
2573   local ip=$2
2574   sudo virsh dumpxml $vm | sed -r "s/(<listen.*address=')([^']+)/\1$ip/" | \
2575     sed -r "s/listen='[^']+/listen='$ip/"> $t
2576   sudo virsh undefine $vm
2577   sudo virsh define $t
2578 }
2579
2580
2581 vmshare() {
2582   vm-set-listen $1 0.0.0.0
2583 }
2584
2585
2586 vmunshare() {
2587   vm-set-listen $1 127.0.0.1
2588 }
2589
2590 myiwscan() {
2591   # find input, copy to pattern space, when we find the first field, print the copy in different order without newlines.
2592   # instead of using labels, we could just match a line and group, eg: /signal:/,{s/signal:(.*)/\1/h}
2593   sudo iw dev wls1 scan | sed -rn  "
2594 s/^\Wcapability: (.*)/\1/;Ta;h;b
2595 :a;s/^\Wsignal: -([^.]+).*/\1/;Tb;H;b
2596 # padded to min width of 20
2597 :b;s/\WSSID: (.*)/\1                    /;T;s/^(.{20}(.*[^ ])?) */\1/;H;g;s/(.*)\n(.*)\n(.*)/\2 \3  \1/gp;b
2598 "|sort -r
2599 }
2600
2601 # Run script by copying it to a temporary location first,
2602 # and changing directory, so we don't have any open
2603 # directories or files that could cause problems when
2604 # remounting.
2605 zr() {
2606   local tmp
2607   tmp=$(type -p "$1")
2608   if [[ $tmp ]]; then
2609     cd "$(mktemp -d)"
2610     cp -a "$tmp" .
2611     shift
2612     ./"${tmp##*/}" "$@"
2613   else
2614     "$@"
2615   fi
2616 }
2617
2618
2619 # * spark
2620 # spark 1 5 22 13 53
2621 #   # => ▁▁▃▂▇
2622
2623 # The MIT License
2624 # Copyright (c) Zach Holman, https://zachholman.com
2625 # https://github.com/holman/spark
2626
2627 # As of 2022-10-28, I reviewed github forks that had several newer
2628 # commits, none had anything interesting. I did a little refactoring
2629 # mostly to fix emacs indent bug.
2630
2631 # Generates sparklines.
2632 _spark_echo()
2633 {
2634   if [ "X$1" = "X-n" ]; then
2635     shift
2636     printf "%s" "$*"
2637   else
2638     printf "%s\n" "$*"
2639   fi
2640 }
2641
2642
2643 spark()
2644 {
2645   local f tc
2646   local n numbers=
2647
2648   # find min/max values
2649   local min=0xffffffff max=0
2650
2651   for n in ${@//,/ }
2652   do
2653     # on Linux (or with bash4) we could use `printf %.0f $n` here to
2654     # round the number but that doesn't work on OS X (bash3) nor does
2655     # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
2656     n=${n%.*}
2657     (( n < min )) && min=$n
2658     (( n > max )) && max=$n
2659     numbers=$numbers${numbers:+ }$n
2660   done
2661
2662   # print ticks
2663   local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
2664
2665   # use a high tick if data is constant
2666   (( min == max )) && ticks=(▅ ▆)
2667
2668   tc=${#ticks[@]}
2669   f=$(( ( (max-min) <<8)/( tc - 1) ))
2670   (( f < 1 )) && f=1
2671
2672   for n in $numbers
2673   do
2674     _spark_echo -n ${ticks[$(( (((n-min)<<8)/f) ))]}
2675   done
2676   _spark_echo
2677 }
2678
2679 pdfwc() { local f; for f; do echo "$f" "$(pdfinfo "$f" | awk '/^Pages:/ {print $2}')"; done }
2680
2681 # * misc stuff
2682
2683
2684 if $use_color && type -p tput &>/dev/null; then
2685   term_bold="$(tput bold)"
2686   term_red="$(tput setaf 1)"
2687   term_green="$(tput setaf 2)"
2688   # shellcheck disable=SC2034 # expected
2689   term_yellow="$(tput setaf 3)"
2690   term_purple="$(tput setaf 5)"
2691   term_nocolor="$(tput sgr0)" # no font attributes
2692
2693   # unused so far. commented for shellcheck
2694   # term_underl="$(tput smul)"
2695   # term_blue="$(tput setaf 4)"
2696   # term_cyan="$(tput setaf 6)"
2697 fi
2698 # Try to keep environment pollution down, EPA loves us.
2699 unset safe_term match_lhs use_color
2700
2701 # * prompt
2702
2703
2704 if [[ $- == *i* ]]; then
2705
2706
2707   case $HOSTNAME in
2708     bk|je|li)
2709       if [[ $EUID == 1000 ]]; then
2710         system-status _ ||:
2711       fi
2712       ;;
2713   esac
2714
2715
2716   # this needs to come before next ps1 stuff
2717   # this stuff needs bash 4, feb 2009,
2718   # old enough to no longer condition on $BASH_VERSION anymore
2719   shopt -s autocd
2720   shopt -s dirspell
2721   PS1='\w'
2722   if [[ $- == *i* ]]  && [[ ! $LC_INSIDE_EMACS ]]; then
2723     PROMPT_DIRTRIM=2
2724     bind -m vi-command B:shell-backward-word
2725     bind -m vi-command W:shell-forward-word
2726   fi
2727
2728   if [[ $SSH_CLIENT || $SUDO_USER ]]; then
2729     unset PROMPT_DIRTRIM
2730     PS1="\h:$PS1"
2731   fi
2732
2733   # emacs terminal has problems if this runs slowly,
2734   # so I've thrown a bunch of things at the wall to speed it up.
2735   prompt-command() {
2736     local return=$? # this MUST COME FIRST
2737     local ps_char ps_color
2738     unset IFS
2739
2740     if [[ $HISTFILE ]]; then
2741       history -a # save history
2742     fi
2743
2744     case $return in
2745       0) ps_color="$term_purple"
2746          ps_char='\$'
2747          ;;
2748       *) ps_color="$term_green"
2749          ps_char="$return \\$"
2750          ;;
2751     esac
2752     if [[ ! -O . ]]; then # not owner
2753       if [[ -w . ]]; then # writable
2754         ps_color="$term_bold$term_red"
2755       else
2756         ps_color="$term_bold$term_green"
2757       fi
2758     fi
2759
2760     # faster than sourceing the file im guessing
2761     if [[ -e /dev/shm/iank-status && ! -e /tmp/quiet-status ]]; then
2762       eval "$(< /dev/shm/iank-status)"
2763     fi
2764     if [[ $MAIL_HOST && $MAIL_HOST != "$HOSTNAME" ]]; then
2765       ps_char="@ $ps_char"
2766     fi
2767     jobs_char=
2768     if [[ $(jobs -p) ]]; then
2769       jobs_char='j\j '
2770     fi
2771     # We could test if sudo is active with sudo -nv
2772     # but then we get an email and log of lots of failed sudo commands.
2773     # We could turn those off, but seems better not to.
2774     if [[ $EUID != 0 ]] && [[ $DID_SUDO ]]; then
2775       psudo="\[$term_bold$term_red\]s\[$term_nocolor\] "
2776     fi
2777     if [[ ! $HISTFILE ]]; then
2778       ps_char="NOHIST $ps_char"
2779     fi
2780     PS1="${PS1%"${PS1#*[wW]}"} $jobs_char$psudo\[$ps_color\]$ps_char\[$term_nocolor\] "
2781
2782     # set titlebar. instead, using more advanced
2783     # titelbar below
2784     #echo -ne "$_title_escape $HOSTNAME ${PWD/#$HOME/~}  \007"
2785   }
2786   PROMPT_COMMAND=(prompt-command)
2787
2788   if [[ $TERM == screen* ]]; then
2789     _title_escape="\033]..2;"
2790   else
2791     # somme sites recommend this, i dunno what the diff is.
2792     #_title_escape="\033]30;"
2793     _title_escape="\033]0;"
2794   fi
2795
2796   # make the titlebar be the last command and the current directory.
2797   settitle () {
2798
2799
2800     # These are some checks to help ensure we dont set the title at
2801     # times that the debug trap is running other than the case we
2802     # want. Some of them might not be needed.
2803     if (( ${#FUNCNAME[@]} != 1 || ${#BASH_ARGC[@]} != 2 || BASH_SUBSHELL != 0 )); then
2804       return 0
2805     fi
2806     if [[ $1 == prompt-command ]]; then
2807       return 0
2808     fi
2809     echo -ne "$_title_escape ${PWD/#$HOME/~} "
2810     printf "%s" "$*"
2811     echo -ne "\007"
2812   }
2813
2814   # note, this wont work:
2815   # x=$(mktemp); cp a $x
2816   # I havnt figured out why, bigger fish to fry.
2817   #
2818   # for titlebar.
2819   # condition from the screen man page i think.
2820   # note: duplicated in tx()
2821   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2822     trap 'settitle "$BASH_COMMAND"' DEBUG
2823   else
2824     trap DEBUG
2825   fi
2826
2827 fi
2828
2829 # * stuff that makes sense to be at the end
2830
2831
2832 # best practice
2833 unset IFS
2834
2835 if [[ -s "$HOME/.rvm/scripts/rvm" ]]; then
2836   # shellcheck disable=SC1091
2837   source "$HOME/.rvm/scripts/rvm"
2838 fi
2839
2840 # I had this idea to start a bash shell which would run an initial
2841 # command passed through this env variable, then continue on
2842 # interactively. But the use case I had in mind went away.
2843 #
2844 # if [[ $MY_INIT_CMD ]]; then
2845 #   "${MY_INIT_CMD[@]}"
2846 #   unset MY_INIT_CMD
2847 # fi
2848
2849 # ensure no bad programs appending to this file will have an affect
2850 return 0