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 if [[ -s /a/bin/errhandle/err ]]; then
   9   source /a/bin/errhandle/err
  10 elif [[ -s $bashrc_dir/err ]]; then
  11   # shellcheck source=/a/bin/errhandle/err
  12   source $bashrc_dir/err
  13 fi
  14
  15 # In t8, it runs clear_console for login shells by default. I don't want
  16 # my console cleared. And linux ttys get cleared without this.
  17 if shopt login_shell >/dev/null && [[ -e ~/.bash_logout ]]; then
  18   rm ~/.bash_logout
  19 fi
  20
  21 # if [[ -s /usr/share/bash-completion/completions/git ]]; then
  22 #   source /usr/share/bash-completion/completions/git
  23 # fi
  24 # if [[ -s /usr/share/bash-completion/completions/gitk ]]; then
  25 #   source /usr/share/bash-completion/completions/gitk
  26 # fi
  27
  28 # for testing error catching:
  29 # t2() {
  30 #   echo t2
  31 #   grep sdf sdfd
  32 #   echo wtf
  33 # }
  34 # t1() {
  35 #   echo t1
  36 #   t2 a b c
  37 # }
  38
  39 # * settings
  40
  41 CDPATH=.
  42
  43
  44 # remove all aliases. aliases provided by the system tend to get in the way,
  45 # for example, error happens if I try to define a function the same name as an alias
  46 unalias -a
  47
  48 # remove gnome keyring warning messages
  49 # there is probably a more proper way, but I didnt find any easily on google
  50 # now using xfce+xmonad instead of vanilla xmonad, so disabling this
  51 #unset GNOME_KEYRING_CONTROL
  52
  53 # use extra globing features.
  54 shopt -s extglob
  55 # include .files when globbing, but ignore files name . and ..
  56 # setting this also sets dotglob.
  57 export GLOBIGNORE="*/.:*/.."
  58
  59 # Useful info. see man bash.
  60 PS4='$LINENO+ '
  61
  62
  63 # broken with bash_completion package. Saw a bug for this once. dont anymore.
  64 # still broken in wheezy
  65 # still buggered in latest stable from the web, version 2.1
  66 # perhaps its fixed in newer git version, which fails to make for me
  67 # this note is from 6-2014.
  68 # still broken in flidas.
  69 #shopt -s nullglob
  70
  71 # make tab on an empty line do nothing
  72 shopt -s no_empty_cmd_completion
  73
  74 # fix spelling errors for cd, only in interactive shell
  75 shopt -s cdspell
  76 # append history instead of overwritting it
  77 shopt -s histappend
  78 # for compatibility, per gentoo/debian bashrc
  79 shopt -s checkwinsize
  80 # attempt to save multiline single commands as single history entries.
  81 shopt -s cmdhist
  82 # enable **
  83 shopt -s globstar
  84
  85
  86 # inside emacs fixes
  87 if [[ $LC_INSIDE_EMACS ]]; then
  88   # EMACS is used by bash on startup, but we dont need it anymore.
  89   # plus I hit a bug in a makefile which inherited it
  90   unset EMACS
  91   export LC_INSIDE_EMACS
  92   export PAGER=cat
  93   export MANPAGER=cat
  94   # scp completion does not work, but this doesnt fix it. todo, figure this out
  95   #complete -r scp &> /dev/null
  96   # todo, remote file completion fails, figure out how to turn it off
  97   export NODE_DISABLE_COLORS=1
  98   # This gets rid of ugly terminal escape chars in node repl
  99   # sometime, Id like to have completion working in emacs shell for node
 100   # the offending chars can be found in lib/readline.js,
 101   # things that do like:
 102   # stream.write('\x1b[' + (x + 1) + 'G');
 103   # We can remove them and keep readline, for example by doing this
 104   # to start a repl:
 105   #!/usr/bin/env nodejs
 106   # var readline = require('readline');
 107   # readline.cursorTo = function(a,b,c) {};
 108   # readline.clearScreenDown = function(a) {};
 109   # const repl = require('repl');
 110   # var replServer = repl.start('');
 111   #
 112   # no prompt, or else readline complete seems to be confused, based
 113   # on our column being different? node probably needs to send
 114   # different kind of escape sequence that is not ugly. Anyways,
 115   # completion doesnt work yet even with the ugly prompt, so whatever
 116   #
 117   export NODE_NO_READLINE=1
 118
 119 fi
 120
 121 export SSH_CONFIG_FILE_OVERRIDE=/root/.ssh/confighome
 122
 123 # emacs has a different default search path than the info command. This
 124 # adds the info defaults to emacs, but not the reverse, because I dun
 125 # care much about the cli. The search path is only on the cli if you run
 126 # "info xxx", or in emacs if you run '(info xxx)', so not that
 127 # important, but might as well fix it.
 128
 129 # info info says this path is what was compiled, and its not documented
 130 # anywhere. Through source grepping, i found it in filesys.h of the info
 131 # source in trisquel flidas.
 132 #
 133 # Traling : means for emacs to add its own stuff on to the end.
 134
 135 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:.:
 136
 137 # for openwrt system that has no stty, this is easier than
 138 # guarding every time i use it.
 139 if ! type -p stty >/dev/null; then
 140   stty() { :; }
 141 fi
 142
 143
 144 use_color=false
 145 if [[ $- == *i* ]]; then
 146   # for readline-complete.el
 147   if [[ $LC_INSIDE_EMACS ]]; then
 148     # all for readline-complete.el
 149     stty echo
 150     bind 'set horizontal-scroll-mode on'
 151     bind 'set print-completions-horizontally on'
 152     bind '"\C-i": self-insert'
 153   else
 154
 155
 156     if [[ $TERM != dumb ]] && test -t 1; then
 157       use_color=true
 158     fi
 159
 160     if [[ $KONSOLE_PROFILE_NAME ]]; then
 161       TERM=xterm-256color
 162     fi
 163
 164     if [[ $TERM == alacritty && ! -e /usr/share/terminfo/a/alacritty ]]; then
 165       # todo: we should try installing the alacritty terminfo if it is not found
 166       # https://github.com/alacritty/alacritty/issues/2838
 167       TERM=xterm-256color
 168     fi
 169
 170     # copying from the alacritty example above,
 171     if [[ $TERM == xterm-kitty ]]; then
 172       if [[ ! -e /usr/share/terminfo/x/xterm-kitty ]]; then
 173         TERM=xterm-256color
 174       else
 175         if [[ -e /a/opt/kitty/shell-integration/bash/kitty.bash ]]; then
 176           KITTY_SHELL_INTEGRATION=t
 177           source /a/opt/kitty/shell-integration/bash/kitty.bash
 178         fi
 179       fi
 180     fi
 181
 182     # todo: not sure this works in sakura
 183     #stty werase undef
 184     #bind "\C-w": kill-region
 185     # sakura == xterm-256color
 186     # konsole == xterm
 187     if [[ $TERM != xterm-kitty && $TERM == xterm* ]]; then
 188       # control + arrow keys. for other terminals, see http://unix.stackexchange.com/questions/10806/how-to-change-previous-next-word-shortcut-in-bash
 189       bind '"\e[1;5C": shell-forward-word' 2>/dev/null
 190       bind '"\e[1;5D": shell-backward-word' 2>/dev/null
 191     else
 192       # make ctrl-backspace work. for konsole, i fixed it through
 193       # /home/iank/.local/share/konsole/default.keytab
 194       stty werase ^h
 195       bind '"\eOc": shell-forward-word'
 196       bind '"\eOd": shell-backward-word'
 197     fi
 198     # i cant remember why i did this, probably to free up some keys to bind
 199     # to other things in bash.
 200     # other than C-c and C-z, the rest defined by stty -a are, at least in
 201     # gnome-terminal, overridden by bash, or disabled by the system
 202     stty  lnext undef stop undef start undef
 203   fi
 204
 205 fi
 206
 207 case $TERM in
 208   # fixup broken backspace in chroots
 209   xterm-kitty|alacritty)
 210     chroot() {
 211       TERM=xterm-256color command chroot "$@"
 212     }
 213     ;;
 214 esac
 215
 216 export BC_LINE_LENGTH=0
 217
 218 # ansible option
 219 export PROFILE_TASKS_TASK_OUTPUT_LIMIT=100
 220
 221 # note, if I use a machine I dont want files readable by all users, set
 222 # umask 077  # If fewer than 4 digits are entered, leading zeros are assumed
 223
 224 # i for insensitive. the rest from
 225 # X means dont remove the current screenworth of output upon exit
 226 # R means to show colors n things
 227 # a useful flag is -F aka --quit-if-one-screen
 228 export LESS=RXij12
 229 export SYSTEMD_LESS=$LESS
 230
 231 export NNN_COLORS=2136
 232
 233 export SL_FILES_DIR=/b/ds/sl/.iank
 234 export SL_INFO_DIR=/p/sshinfo
 235
 236
 237 # * include files
 238
 239 if [[ -s $bashrc_dir/path-add-function ]]; then
 240   source $bashrc_dir/path-add-function
 241   if [[ $SSH_CLIENT ]]; then
 242     if grep -qF /home/iank/.iank/e/e /etc/exports &>/dev/null; then
 243       export EMACSDIR=/home/iank/.iank/e/e
 244     fi
 245     path-add $bashrc_dir
 246   fi
 247 fi
 248
 249 # if someone exported $SOE (stop on error), catch errors.
 250 #
 251 # Note, on debian this results in the following warning when in ssh,
 252 # hich I haven't figured out how to fix. It doesn't happen if we source
 253 # after the shell has started
 254 #
 255 # bash: /usr/share/bashdb/bashdb-main.inc: No such file or directory
 256 # bash: warning: cannot start debugger; debugging mode disabled
 257 if [[ $SOE ]]; then
 258   if [[ -e /a/bin/errhandle/err ]]; then
 259     source /a/bin/errhandle/err
 260   fi
 261 fi
 262
 263
 264
 265
 266 mysrc() {
 267   local path dir file
 268   path=$1
 269   dir=${path%/*}
 270   file=${path##*/}
 271   if [[ -s $path ]]; then
 272     source $path
 273   elif [[ -s $bashrc_dir/$file ]]; then
 274     source $bashrc_dir/$file
 275   fi
 276 }
 277
 278
 279 mysrc /a/bin/small-misc-bash/ll-function
 280 mysrc /a/bin/distro-functions/src/package-manager-abstractions
 281
 282 # things to remember:
 283 # ALT-C - cd into the selected directory
 284 # CTRL-T - Paste the selected file path into the command line
 285 #
 286 # good guide to some of its basic features is the readme file
 287 # https://github.com/junegunn/fzf
 288
 289 # if [[ -s /usr/share/doc/fzf/examples/key-bindings.bash ]]; then
 290 #   source /usr/share/doc/fzf/examples/key-bindings.bash
 291 # fi
 292
 293 # * functions
 294
 295 ### begin FSF section ###
 296
 297 # Comments before functions are meant to be good useful
 298 # documentation. If they fail at that, please improve them or send Ian a
 299 # note.
 300
 301 ## copy bash completion
 302 # Usage: ORIGINAL_COMMAND TARGET_COMMAND...
 303 #
 304 # It copies how the bash completion works from one command to other
 305 # commands.
 306 ccomp() {
 307   local c src
 308   src=$1
 309   shift
 310   if ! c=$(complete -p $src 2>/dev/null); then
 311     _completion_loader $src &>/dev/null ||:
 312     c=$(complete -p $src 2>/dev/null) || return 0
 313   fi
 314   # remove $src( .*|$)
 315   c=${c% $src}
 316   c=${c%% $src *}
 317   eval $c $*
 318 }
 319
 320 ## directory history tracking and navigation.
 321 #
 322 # cd becomes a function, also aliased to c. b to go back, f to go
 323 # forward, cl to list recent directories and choose one.
 324 #
 325 # The finer details you may want to skip:
 326 #
 327 # We also define bl to print the list of back and forward directories.
 328 #
 329 # We keep 2 stacks, forward and back. Unlike with a web browser, the
 330 # forward stack is not erased when going somewhere new.
 331 #
 332 # Recent directories are stored in ~/.cdirs.
 333 #
 334 declare -a _dir_forward _dir_back
 335 c() {
 336   # normally, the top of _dir_back is our current dir. if it isn't,
 337   # put it on there, except we don't want to do that when we
 338   # just launched a shell
 339   if [[ $OLDPWD ]]; then
 340     if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 341       _dir_back+=("$PWD")
 342     fi
 343   fi
 344   command cd "$@"
 345   if (( ${#_dir_back[@]} == 0 )) || [[ ${_dir_back[-1]} != "$PWD" ]]; then
 346     _dir_back+=("$PWD")
 347   fi
 348   echo "$PWD" >> ~/.cdirs
 349 }
 350 ccomp cd c
 351
 352 # back
 353 b() {
 354   local top_back
 355   if (( ${#_dir_back[@]} == 0 )); then
 356     echo "nothing left to go back to" >&2
 357     return 0
 358   fi
 359   top_back="${_dir_back[-1]}"
 360
 361   if [[ $top_back == "$PWD" ]] && (( ${#_dir_back[@]} == 1 )); then
 362     echo "already on last back entry" >&2
 363     return 0
 364   fi
 365
 366
 367   if [[ $top_back == "$PWD" ]]; then
 368     # add to dirf if not already there
 369     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$top_back" ]]; then
 370       _dir_forward+=("$top_back")
 371     fi
 372     unset "_dir_back[-1]"
 373     command cd "${_dir_back[-1]}"
 374   else
 375     if (( ${#_dir_forward[@]} == 0 )) || [[ ${_dir_forward[-1]} != "$PWD" ]]; then
 376       _dir_forward+=("$PWD")
 377     fi
 378     command cd "$top_back"
 379   fi
 380
 381   # Interesting feature, not sure I want it.
 382   # give us a peek at what is next in the list
 383   # if (( ${#_dir_back[@]} >= 2 )); then
 384   #   printf "%s\n" "${_dir_back[-2]}"
 385   # fi
 386   #
 387
 388   # c/b/f Implementation notes:
 389   #
 390   # The top of the back is $PWD
 391   # as long as the last directory change was due to c,b,or cl.
 392   #
 393   # Example of stack changes:
 394   #
 395   # a b c (d)
 396   ## back
 397   # a b (c)
 398   # d
 399   #back
 400   #a (b)
 401   #d c
 402   #back
 403   #(a)
 404   #d c b
 405   #forward
 406   #a (b)
 407   #d c
 408   #
 409   # a b c
 410   ## back
 411   # a b
 412   # (c)
 413   ## forward
 414
 415 }
 416 # forward
 417 f() {
 418   local top_forward
 419   if (( ${#_dir_forward[@]} == 0 )); then
 420     echo "no forward dir left" >&2
 421     return 0
 422   fi
 423   top_forward="${_dir_forward[-1]}"
 424   unset "_dir_forward[-1]"
 425   c "$top_forward"
 426
 427   # give us a peek at what is next in the list
 428   # if (( ${#_dir_forward[@]} )); then
 429   #   printf "%s\n" "${_dir_forward[-1]}"
 430   # fi
 431 }
 432 # cd list
 433 cl() {
 434   local i line input start
 435   local -A buttondirs alines
 436   local -a buttons dirs lines
 437   buttons=( {a..z} {2..9} )
 438   if [[ ! -s ~/.cdirs ]]; then
 439     echo nothing in ~/.cdirs
 440     return 0
 441   fi
 442
 443   i=0
 444
 445   mapfile -t lines <~/.cdirs
 446   start=$(( ${#lines[@]} - 1 ))
 447
 448   # we have ~33 buttons as of this writing, so lets
 449   # prune down the history every once in a while.
 450   if (( start > 500 )); then
 451     tac ~/.cdirs | awk '!seen[$0]++' | head -n 200 | tac | sponge ~/.cdirs || [[ $? == 141 ]]
 452   fi
 453
 454   for (( j=$start; j >= 0; j-- )); do
 455     line="${lines[$j]}"
 456     if [[ ! $line || ${alines[$line]} || ! -d "$line" || $line == "$PWD" || line == "$HOME"  ]]; then
 457       continue
 458     fi
 459     alines[$line]=t
 460     buttondirs[${buttons[i]}]="$line"
 461     printf "%s %s\n" ${buttons[i]} "$line"
 462     if (( i == ${#buttons[@]} - 1 )); then
 463       break
 464     fi
 465     i=$(( i + 1 ))
 466   done
 467
 468   if (( i == 0 )); then
 469     echo "no dirs in ~/.cdirs"
 470     return 0
 471   fi
 472   read -r -N 1 input
 473   if [[ $input != $'\n' ]]; then
 474     c "${buttondirs[$input]}"
 475   fi
 476 }
 477 # back list
 478 bl() {
 479   local start i j max
 480   max=10
 481   start=$(( ${#_dir_back[@]} - 1 ))
 482
 483   # cleanup possible repeating of pwd
 484   if (( start >= 0 )) && [[ ${_dir_back[$start]} == "$PWD" ]]; then
 485     start=$(( start - 1 ))
 486   fi
 487   j=1
 488   if (( start >= 0 )); then
 489     for (( i=$start; i >= 0 ; i-- )); do
 490       printf "%s %s\n" $j ${_dir_back[i]}
 491       j=$(( j + 1 ))
 492       if (( j >= max )); then
 493         break
 494       fi
 495     done
 496   fi
 497
 498   max=10
 499   start=$(( ${#_dir_forward[@]} - 1 ))
 500
 501   # cleanup possible repeating of pwd
 502   if (( start >= 0 )) && [[ ${_dir_forward[$start]} == "$PWD" ]]; then
 503     start=$(( start - 1 ))
 504   fi
 505   if (( start < 0 )); then
 506     return 0
 507   fi
 508   echo --
 509   j=1
 510   for (( i=$start; i >= 0 ; i-- )); do
 511     printf "%s %s\n" $j ${_dir_forward[i]}
 512     j=$(( j + 1 ))
 513     if (( j >= max )); then
 514       break
 515     fi
 516   done
 517 }
 518
 519 # pee do. run args as a command with output copied to syslog.
 520 #
 521 # Usage: pd [-t TAG] COMMAND...
 522 #
 523 # -t TAG Override the tag in the syslog. The default is COMMAND with
 524 #        any path part is removed, eg. for /bin/cat the tag is cat.
 525 #
 526 # You can view the log via "journalctl -t TAG"
 527 pd() {
 528   local tag ret
 529   ret=0
 530   tag=${1##*/}
 531   case $1 in
 532     -t) tag="$2"; shift 2 ;;
 533   esac
 534   echo "PWD=$PWD command: $*" | logger -t $tag
 535   "$@" |& pee cat "logger -t $tag" || ret=$?
 536   echo "exited with status=$ret" | pee cat "logger -t $tag"
 537   # this avoids any err-catch
 538   (( $ret == 0 )) || return $ret
 539 }
 540 ccomp time pd
 541
 542 # jdo = journal do. Run command as transient systemd service, tailing
 543 # its output in the journal until it completes.
 544 #
 545 # Usage: jdo COMMAND...
 546 #
 547 # Compared to pd: commands recognize this is a non-interactive shell.
 548 # The service is unaffected if our ssh connection dies, no need to run
 549 # in screen or tmux.
 550 #
 551 # Note: The last few lines of any existing entries for a unit by that
 552 # name will be output first, and there will be a few second delay at the
 553 # start of the command, and a second or so at the end.
 554 #
 555 # Note: Functions and aliases obviously won't work, we resolve the
 556 # command to a file.
 557 #
 558 # Note: requires running as root.
 559 jdo() {
 560   local cmd cmd_name jr_pid ret
 561   ret=0
 562   cmd="$1"
 563   shift
 564   if [[ $EUID != 0 ]]; then
 565     echo "jdo: error: rerun as root"
 566     return 1
 567   fi
 568   cmd_name=${cmd##*/}
 569   if [[ $cmd != /* ]]; then
 570     cmd=$(type -P "$cmd")
 571   fi
 572   # -q = quiet
 573   journalctl -qn2 -f -u "$cmd_name" &
 574   # Trial and error of time needed to avoid missing initial lines.
 575   # .5 was not reliable. 1 was not reliable. 2 was not reliable
 576   sleep 4
 577   jr_pid=$!
 578   systemd-run --unit "$cmd_name" --wait --collect "$cmd" "$@" || ret=$?
 579   # The sleep lets the journal output its last line
 580   # before the prompt comes up.
 581   sleep .5
 582   kill $jr_pid &>/dev/null ||:
 583   unset jr_pid
 584   fg &>/dev/null ||:
 585   # this avoids any err-catch
 586   (( $ret == 0 )) || return $ret
 587 }
 588 ccomp time jdo
 589 #### end fsf section
 590
 591
 592 ..() { c ..; }
 593 ...() { c ../..; }
 594 ....() { c ../../..; }
 595 .....() { c ../../../..; }
 596 ......() { c ../../../../..; }
 597
 598 chere() {
 599   local f path
 600   for f; do
 601     path=$(readlink -e "$f")
 602     echo "cat >$path <<'EOF'"
 603     cat "$f"
 604     echo EOF
 605   done
 606 }
 607
 608
 609 # file cut copy and paste, like the text buffers :)
 610 # I havnt tested these.
 611 _fbufferinit() { # internal use
 612   ! [[ $my_f_tempdir ]] && my_f_tempdir=$(mktemp -d)
 613   rm -rf "${my_f_tempdir:?}"/*
 614 }
 615 fcp() { # file cp
 616   _fbufferinit
 617   cp "$@" "$my_f_tempdir"/
 618 }
 619 fct() { # file cut
 620   _fbufferinit
 621   mv "$@" "$my_f_tempdir"/
 622 }
 623 fpst() { # file paste
 624   [[ $2 ]] && { echo too many arguments; return 1; }
 625   target=${1:-.}
 626   cp "$my_f_tempdir"/* "$target"
 627 }
 628
 629 _khfix_common() {
 630   local host ip port file key
 631   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" ||: )
 632   file=$(readlink -f ~/.ssh/known_hosts)
 633   if [[ ! $ip ]]; then
 634     echo "khfix: ssh failed"
 635     return 1
 636   fi
 637   if [[ $port != 22 ]]; then
 638     ip_entry="[$ip]:$port"
 639     host_entry="[$host]:$port"
 640   else
 641     ip_entry=$ip
 642     host_entry=$host
 643   fi
 644   tmpfile=$(mktemp)
 645   if [[ $host != $ip ]]; then
 646     key=$(ssh-keygen -F "$host_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 647     if [[ $key ]]; then
 648       grep -Fv "$key" "$file" | sponge "$file"
 649     fi
 650   fi
 651   key=$(ssh-keygen -F "$ip_entry" -f $file | sed -r 's/^.*([^ ]+ +[^ ]+) *$/\1/')
 652   if [[ $key ]]; then
 653     grep -Fv "$key" "$file" | sponge "$file"
 654   fi
 655   ll ~/.ssh/known_hosts
 656   rootsshsync
 657 }
 658 khfix() { # known hosts fix
 659   _khfix_common "$@" || return 1
 660   ssh $1 :
 661 }
 662 khcopy() {
 663   _khfix_common "$@"
 664   ssh-copy-id $1
 665 }
 666
 667 # ya, hacky hardcoded hostnames in 2023. we could do better
 668 hssh-update() {
 669   local -a failed_hosts
 670   for host in kd x3.office.fsf.org syw; do
 671     e $host
 672     if ! scp /b/fai/fai/config/files/usr/local/bin/hssh/IANK root@$host:/usr/local/bin/hssh; then
 673       failed_hosts+=($host)
 674     fi
 675   done
 676   if (( ${#failed_hosts[@]} >= 1 )); then
 677     echo failed_hosts=${failed_hosts[*]}
 678     return 1
 679   fi
 680 }
 681
 682 a() {
 683   local x
 684   x=$(readlink -nf "${1:-$PWD}")
 685   # yes, its kinda dumb that xclip/xsel cant do this in one invocation
 686   echo -n "$x" | xclip -selection clipboard
 687   echo -n "$x" | xclip
 688 }
 689
 690 # a1 = awk {print $1}
 691 for field in {1..20}; do
 692   eval a$field"() { awk '{print \$$field}'; }"
 693 done
 694 # h1 = head -n1
 695 for num in {1..9}; do
 696   eval h$num"() { head -n$num; }"
 697 done
 698
 699
 700 hexipv4() {
 701   printf '%d.%d.%d.%d\n' $(echo $1 | sed 's/../0x& /g')
 702 }
 703
 704 vp9() {
 705   local f out outdir in fname origdir skip1
 706   origdir="$PWD"
 707   outdir=vp9
 708   skip1=false
 709   while [[ $1 == -* ]]; do
 710     case $1 in
 711       # if we got interrupted after 1st phase
 712       -2)
 713         skip1=true
 714         shift
 715         ;;
 716       --out)
 717         outdir=$2
 718         shift 2
 719         ;;
 720     esac
 721   done
 722   m mkdir -p $outdir
 723   # first pass only uses about 1 cpu, so run in parallel
 724   for f; do
 725     {
 726       fname="${f##*/f}"
 727       if [[ $f == /* ]]; then
 728         in="$f"
 729       else
 730         in=$origdir/$f
 731       fi
 732       out="$origdir/$outdir/$fname"
 733       mkdir -p /tmp/vp9/$fname
 734       cd /tmp/vp9/$fname
 735       if ! $skip1 && [[ ! -s ffmpeg2pass-0.log ]]; then
 736         # -nostdin or else wait causes ffmpeg to go into stopped state. dunno why, random stackoverflow answer.
 737         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
 738       fi
 739       if [[ -e $out ]]; then rm -f $out; fi
 740       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 $out
 741     } &
 742   done
 743   wait -f
 744   cd "$origdir"
 745 }
 746
 747 utcl() { # utc 24 hour time to local hour 24 hour time
 748   echo "print( ($1  $(date +%z | sed -r 's/..$//;s/^(-?)0*/\1/')) % 24)"|python3
 749 }
 750
 751 bwm() {
 752   s bwm-ng -T avg -d
 753 }
 754
 755
 756 # for running in a fai rescue. iank specific.
 757 kdrescue() {
 758   d=vgata-Samsung_SSD_850_EVO_2TB_S2RLNX0J502123D
 759   for f in $d vgata-Samsung_SSD_870_QVO_8TB_S5VUNG0N900656V; do
 760     cryptsetup luksOpen --key-file /p /dev/$f/root crypt-$f-root
 761     cryptsetup luksOpen --key-file /p /dev/$f/o crypt-$f-o
 762   done
 763   mount -o subvol=root_trisquelaramo /dev/mapper/crypt-$d-root /mnt
 764   mount -o subvol=a /dev/mapper/crypt-$d-root /mnt/a
 765   mount -o subvol=o /dev/mapper/crypt-$d-o /mnt/o
 766   mount -o subvol=boot_trisquelaramo /dev/sda2 /mnt/boot
 767   cd /mnt
 768   chrbind
 769 }
 770
 771
 772
 773
 774 c4() { c /var/log/exim4; }
 775
 776 caa() { git commit --amend --no-edit -a; }
 777
 778 cf() {
 779   for f; do
 780     hr
 781     echo "$f"
 782     hr
 783     cat "$f"
 784   done
 785 }
 786 caf() {
 787   # shellcheck disable=SC2033
 788   find -L "$@" -type f -not \( -name .svn -prune -o -name .git -prune \
 789        -o -name .hg -prune -o -name .editor-backups -prune \
 790        -o -name .undo-tree-history -prune \) \
 791        -exec bash -c '. ~/.bashrc; hr; echo "$1"; hr; cat "$1"' _ {} \; 2>/dev/null
 792
 793 }
 794 ccomp cat cf caf
 795
 796 calc() { echo "scale=3; $*" | bc -l; }
 797 # no having to type quotes, but also no command history:
 798 clc() {
 799   local x
 800   read -r x
 801   echo "scale=3; $x" | bc -l
 802 }
 803
 804 cam() {
 805   git commit -am "$*"
 806 }
 807
 808 ccat () { # config cat. see a config without extra lines.
 809   sed -r '/^[[:space:]]*([;#]|--|\/\/|$)/d' "$@"
 810 }
 811 ccomp grep ccat
 812
 813 chrbind() {
 814   local d
 815   # dev/pts needed for pacman signature check
 816   for d in dev proc sys dev/pts; do
 817     [[ -d $d ]]
 818     if ! mountpoint $d &>/dev/null; then
 819       m s mount -o bind /$d $d
 820     fi
 821   done
 822 }
 823 chumount() {
 824   local d
 825   # dev/pts needed for pacman signature check
 826   for d in dev/pts dev proc sys; do
 827     [[ -d $d ]]
 828     if mountpoint $d &>/dev/null; then
 829       m s umount $d
 830     fi
 831   done
 832 }
 833
 834
 835 _cdiff-prep() {
 836   # join options which are continued to multiples lines onto one line
 837   local first=true
 838   while IFS= read -r line; do
 839     # remove leading spaces/tabs. assumes extglob
 840     if [[ $line == "[   ]*" ]]; then
 841       line="${line##+( )}"
 842     fi
 843     if $first; then
 844       pastline="$line"
 845       first=false
 846     elif [[ $line == *=* ]]; then
 847       echo "$pastline" >> "$2"
 848       pastline="$line"
 849     else
 850       pastline="$pastline $line"
 851     fi
 852   done < <(grep -vE '^([ \t]*#|^[ \t]*$)' "$1")
 853   echo "$pastline" >> "$2"
 854 }
 855
 856 cdiff() {
 857   # diff config files,
 858   # setup for format of postfix, eg:
 859   # option = stuff[,]
 860   #    [more stuff]
 861   local pastline unified f1 f2
 862   unified="$(mktemp)"
 863   f1="$(mktemp)"
 864   f2="$(mktemp)"
 865   _cdiff-prep "$1" "$f1"
 866   _cdiff-prep "$2" "$f2"
 867   cat "$f1" "$f2" |  grep -Po '^[^=]+=' | sort | uniq > "$unified"
 868   while IFS= read -r line; do
 869     # the default bright red / blue doesnt work in emacs shell
 870     dwdiff -cblue,red -A best -d "      ," <(grep "^$line" "$f1" || echo ) <(grep "^$line" "$f2" || echo ) | colordiff
 871   done < "$unified"
 872 }
 873
 874
 875 cat-new-files() {
 876   local start=$SECONDS
 877   local dir="$1"
 878   # shellcheck disable=SC2030
 879   inotifywait -m "$dir" -e create -e moved_to | \
 880     while read -r filedir _ file; do
 881       cat "$filedir$file"
 882       hr
 883       calc $((SECONDS - start)) / 60
 884       sleep 5
 885     done
 886
 887 }
 888
 889 chownme() {
 890   s chown -R $USER:$USER "$@"
 891 }
 892
 893 # shellcheck disable=SC2032
 894 chown() {
 895   # makes it so chown -R symlink affects the symlink and its target.
 896   if [[ $1 == -R ]]; then
 897     shift
 898     command chown -h "$@"
 899     command chown -R "$@"
 900   else
 901     command chown "$@"
 902   fi
 903 }
 904
 905 cim() {
 906   git commit -m "$*"
 907 }
 908
 909
 910 d() { builtin bg "$@"; }
 911 ccomp bg d
 912
 913 # f would be more natural, but i already am using it for something
 914 z() { builtin fg "$@"; }
 915 ccomp fg z
 916
 917 x() { builtin kill %%; }
 918
 919 dc() {
 920   diff --strip-trailing-cr -w "$@"   # diff content
 921 }
 922 ccomp diff dc
 923
 924 despace() {
 925   local x y
 926   for x in "$@"; do
 927     y="${x// /_}"
 928     safe_rename "$x" "$y"
 929   done
 930 }
 931
 932 # df progress
 933 # usage: dfp MOUNTPOINT [SECOND_INTERVAL]
 934 # SECOND_INTERVAL defaults to 90
 935 dfp() {
 936   # mp = mountpoint
 937   local a b mp interval
 938   mp=$1
 939   interval=${2:-90}
 940   if [[ ! $mp ]]; then
 941     echo "dfp: error, missing 1st arg" >&2
 942     return 1
 943   fi
 944   while true; do
 945     a=$(df --output=used $mp | tail -n1)
 946     sleep $interval
 947     b=$(df --output=used $mp | tail -n1)
 948     printf "used mib: %'d  mib/min: %s\n" $(( b /1000 )) $(( (b-a) / (interval * 1000 / 60 ) ))
 949   done
 950 }
 951
 952 # get ipv4 ip from HOST. or if it is already a number, return that
 953 hostip() {
 954   local host="$1"
 955   case $host in
 956     [0-9:])
 957       echo "$host"
 958       ;;
 959     *)
 960       getent ahostsv4 "$host" | awk '{ print $1 }' | head -n1
 961       ;;
 962   esac
 963 }
 964
 965 dig() {
 966   command dig +nostats +nocmd "$@"
 967 }
 968 # Output with sections sorted, and removal of query id, so 2 dig outputs can be diffed.
 969 digsort() {
 970   local sec
 971   sec=
 972   dig +nordflag "$@" | sed -r 's/^(;; ->>HEADER<<-.*), id: .*/\1/' | while read -r l; do
 973     if [[ $l == [^\;]* ]]; then
 974       sec+="$l"$'\n'
 975     else
 976       if [[ $sec ]]; then
 977         printf "%s" "$sec" | sort
 978         sec=
 979       fi
 980       printf "%s\n" "$l"
 981     fi
 982   done
 983 }
 984 ccomp dig digsort
 985 # compare digs to the 2 servers
 986 # usage: digdiff @server1 @server2 DIG_ARGS
 987 # note: only the soa master nameserver will respond with
 988 # ra "recursive answer" flag. That difference is meaningless afaik.
 989 digdiff() {
 990   local s1 s2
 991   s1=$1
 992   shift
 993   s2=$1
 994   shift
 995   digsort $s1 "$@" | tee /tmp/digdiff
 996   diff -u /tmp/digdiff <(digsort $s2 "$@")
 997 }
 998
 999 # date in a format i like reading
1000 dt() {
1001   date "+%A, %B %d, %r" "$@"
1002 }
1003 dtr() {
1004   date -R "$@"
1005 }
1006 # date with all digits in a format i like
1007 dtd() {
1008   date +%F_%T% "$@"
1009 }
1010 ccomp date dt dtr dtd
1011
1012 dus() { # du, sorted, default arg of
1013   du -sh ${@:-*} | sort -h
1014 }
1015 ccomp du dus
1016
1017
1018 e() { printf "%s\n" "$*"; }
1019
1020 # echo args
1021 ea() {
1022   if (( ! $# )); then
1023     echo no args
1024   fi
1025   for arg; do
1026     printf "%qEOL\n" "${arg}"
1027     printf "%s" "${arg}" |& hexdump -C
1028   done
1029 }
1030
1031 # echo variables. print var including escapes, etc, like xxd for variable
1032 ev() {
1033   if (( ! $# )); then
1034     echo no args
1035   fi
1036   for arg; do
1037     if [[ -v $arg ]]; then
1038       printf "%qEOL\n" "${!arg}"
1039       printf "%s" "${!arg}" |& hexdump -C
1040     else
1041       echo arg $arg is unset
1042     fi
1043   done
1044 }
1045
1046 ediff() {
1047   [[ ${#@} == 2 ]] || { echo "error: ediff requires 2 arguments"; return 1; }
1048   emacs --eval "(ediff-files \"$1\" \"$2\")"
1049 }
1050
1051 # mail related
1052 etail() {
1053   ngset
1054   tail -F /var/log/exim4/mainlog /var/log/exim4/*main /var/log/exim4/paniclog /var/log/exim4/*panic -n 200 "$@"
1055   ngreset
1056 }
1057 etailm() {
1058   tail -F /var/log/exim4/mainlog -n 200 "$@"
1059 }
1060 etail2() {
1061   tail -F /var/log/exim4/mymain -n 200 "$@"
1062 }
1063 ccomp tail etail etail2
1064
1065 # ran into this online, trying it out
1066 detach() {
1067   ( "$@" &>/dev/null & disown )
1068 }
1069
1070 showkeys() {
1071   ssh "$@" cat .ssh/authorized_keys{,2}
1072 }
1073
1074
1075 # print exim old pids
1076 eoldpids() {
1077   local configtime pid piduptime now daemonpid
1078   printf -v now '%(%s)T' -1
1079   configtime=$(stat -c%Y /var/lib/exim4/config.autogenerated)
1080   if [[ -s /run/exim4/exim.pid ]]; then
1081     daemonpid=$(cat /run/exim4/exim.pid)
1082   fi
1083   for pid in $(pgrep -f '^/usr/sbin/exim4( |$)'); do
1084     # the daemonpid gets reexeced on HUP (service reloads), keeping its same old timestamp
1085     if [[ $pid == $daemonpid ]]; then
1086       continue
1087     fi
1088     piduptime=$(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
1089     if (( configtime > now - piduptime )); then
1090       echo $pid
1091     fi
1092   done
1093 }
1094
1095 # exim tail but only watch lines from new pids
1096 etailnew() {
1097   local pid oldpids
1098   for pid in $(eoldpids); do
1099     oldpids+="$pid|"
1100   done
1101   if [[ $oldpids ]]; then
1102     etail | awk '$3 !~ /^\[('"${oldpids%|}"')\]$/'
1103   else
1104     etail
1105   fi
1106 }
1107 # exim watch as old pids go away
1108 ewatchold() {
1109   local configtime pid piduptime now
1110   local -i count
1111   local -a oldpids
1112   count=0
1113   while true; do
1114     oldpids=($(eoldpids))
1115     if (( ! ${#oldpids[@]} )); then
1116       return
1117     fi
1118     # print the date every 20 iterations
1119     if (( ! count % 20 )); then
1120       date
1121     fi
1122     count+=1
1123     ps -f -p "${oldpids[*]}"
1124     sleep 1
1125   done
1126 }
1127
1128 eless() {
1129   less /var/log/exim4/mainlog
1130 }
1131 ccomp less eless
1132 eqcat() {
1133   exiqgrep -ir.\* -o 60 | while read -r i; do
1134     hlm exim -Mvc $i
1135     echo
1136     hlm exigrep $i /var/log/exim4/mainlog | cat ||:
1137   done
1138 }
1139 eqrmf() {
1140   # other ways to get the list of message ids:
1141   # exim -bp | awk 'NF == 4 {print $3}'
1142   # # this is slower 160ms, vs 60.
1143   # exipick -i
1144   exiqgrep -ir.\* | xargs exim -Mrm
1145 }
1146
1147 econfdevnew() {
1148   rm -rf /tmp/edev
1149   mkdir -p /tmp/edev/etc
1150   cp -ra /etc/exim4 /tmp/edev/etc
1151   cp -ra /etc/alias* /tmp/edev/etc
1152   find /tmp/edev/etc/exim4 -type f -execdir sed -i "s,/etc/,/tmp/edev/etc/,g" '{}' +
1153   econfdev
1154 }
1155 econfdev() {
1156   update-exim4.conf -d /tmp/edev/etc/exim4 -o /tmp/edev/e.conf
1157 }
1158
1159 # exim grep in
1160 # show important information about incoming mail in the exim log
1161 egrin() {
1162   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p' <${1:-/var/log/exim4/mainlog}
1163 }
1164
1165 # 2nd line is message-id:
1166 egrinid() {
1167   sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).* id=([^ ]+) T="(.*)" from (<[^ ]+> .*$)/\1 \5\n \3\n \4/p' <${1:-/var/log/exim4/mainlog}
1168 }
1169 etailin() {
1170   tail -F /var/log/exim4/mainlog | sed -rn '/testignore|jtuttle|eximbackup/!s/^[^ ]+ ([^ ]+) [^ ]+ [^ ]+ <= ([^ ]+).*T="(.*)" from (<[^ ]+> .*$)/\1 \4\n \3/p'
1171 }
1172
1173
1174
1175
1176 fa() {
1177   # find array. make an array of file names found by find into $x
1178   # argument: find arguments
1179   # return: find results in an array $x
1180   while read -rd ''; do
1181     x+=("$REPLY");
1182   done < <(find "$@" -print0);
1183 }
1184
1185 faf() { # find all files. use -L to follow symlinks
1186   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1187        -o -name .hg -prune -o -name .editor-backups -prune \
1188        -o -name .undo-tree-history -prune \) -type f 2>/dev/null
1189 }
1190
1191 # usage ffconcat FILES_TO_CONCAT OUTPUT_FILE
1192 ffconcat() {
1193   local tmpf
1194   tmpf=$(mktemp)
1195   printf "file '%s'\n" "$1" >$tmpf
1196   while (( $# > 1 )); do
1197     shift
1198     printf "file '%s'\n" "$1" >>$tmpf
1199   done
1200   # https://trac.ffmpeg.org/wiki/Concatenate
1201   ffmpeg -f concat -safe 0 -i $tmpf -c copy "$1"
1202   rm $tmpf
1203 }
1204 ffremux() {
1205   local tmpf tmpd
1206   if (( $# == 0 )); then
1207     echo ffremux error expected args >&2
1208     return 1
1209   fi
1210   tmpd=$(mktemp -d)
1211   for f; do
1212     tmpf=$tmpd/"${f##*/}"
1213     ffmpeg -i "$f" -c:v copy -c:a copy $tmpf
1214     cat $tmpf >"$f"
1215   done
1216   rm -r $tmpd
1217 }
1218
1219
1220
1221 # absolute path of file/dir without resolving symlinks.
1222 #
1223 # Most of the time, I want this where I would normally use readlink.
1224 # This is what realpath -s does in most cases, but sometimes it
1225 # actually resolves symlinks, at least when they are in /.
1226 #
1227 # Note, if run on a dir, if the final component is relative, it won't
1228 # resolve that. Use the below fpd for that.
1229 #
1230 # note: we could make a variation of this which
1231 # assigns to a variable name using eval, so that we don't have to do
1232 # x=$(fp somepath), which might save subshell overhead and look nice,
1233 # but I'm not going to bother.
1234 fp() {
1235   local initial_oldpwd initial_pwd dir base
1236   initial_oldpwd="$OLDPWD"
1237   initial_pwd="$PWD"
1238   if [[ $1 == */* ]]; then
1239     dir="${1%/*}"
1240     base="/${1##*/}"
1241     # CDPATH because having it set will cause cd to possibly print output
1242     CDPATH= cd "$dir"
1243     printf "%s%s\n" "$PWD" "$base"
1244     CDPATH= cd "$initial_pwd"
1245     OLDPWD="$initial_oldpwd"
1246   else
1247     printf "%s/%s\n" "$PWD" "$1"
1248   fi
1249 }
1250 # full path of directory without resolving symlinks
1251 fpd() {
1252   local initial_oldpwd initial_pwd dir
1253   initial_oldpwd="$OLDPWD"
1254   initial_pwd="$PWD"
1255   dir="$1"
1256   CDPATH= cd "$dir"
1257   printf "%s%s\n" "$PWD" "$base"
1258   cd "$initial_pwd"
1259   OLDPWD="$initial_oldpwd"
1260 }
1261
1262
1263 # mail related
1264 frozen() {
1265   rm -rf /tmp/frozen
1266   sudo mailq |gr frozen|awk '{print $3}' | while read -r id; do
1267     sudo exim -Mvl $id
1268     echo
1269     sudo exim -Mvh $id
1270     echo
1271     sudo exim -Mvb $id
1272     echo -e '\n\n##############################\n'
1273   done | tee -a /tmp/frozen
1274 }
1275 frozenrm() {
1276   local ids=()
1277   while read -r line; do
1278     printf '%s\n' "$line"
1279     ids+=($(printf '%s\n' "$line" |gr frozen|awk '{print $3}'))
1280   done < <(s mailq)
1281   echo "sleeping for 2 in case you change your mind"
1282   sleep 2
1283   sudo exim -Mrm "${ids[@]}"
1284 }
1285
1286 funce() {
1287   # like -e for functions. returns on error.
1288   # at the end of the function, disable with:
1289   # trap ERR
1290   trap 'echo "${BASH_COMMAND:+BASH_COMMAND=\"$BASH_COMMAND\" }
1291 ${FUNCNAME:+FUNCNAME=\"$FUNCNAME\" }${LINENO:+LINENO=\"$LINENO\"  }\$?=$?"
1292 trap ERR
1293 return' ERR
1294 }
1295
1296 getdir () {
1297   local help="Usage: getdir [--help] PATH
1298 Output the directory of PATH, or just PATH if it is a directory."
1299   if [[ $1 == --help ]]; then
1300     echo "$help"
1301     return 0
1302   fi
1303   if [[ $# -ne 1 ]]; then
1304     echo "getdir error: expected 1 argument, got $#"
1305     return 1
1306   fi
1307   if [[ -d $1 ]]; then
1308     echo "$1"
1309   else
1310     local dir
1311     dir="$(dirname "$1")"
1312     if [[ -d $dir ]]; then
1313       echo "$dir"
1314     else
1315       echo "getdir error: directory does not exist"
1316       return 1
1317     fi
1318   fi
1319 }
1320
1321 git_empty_branch() { # start an empty git branch. carefull, it deletes untracked files.
1322   [[ $# == 1 ]] || { echo 'need a branch name!'; return 1;}
1323   local root
1324   root=$(gitroot) || return 1 # function to set gitroot
1325   builtin cd "$root"
1326   git symbolic-ref HEAD refs/heads/$1
1327   rm .git/index
1328   git clean -fdx
1329 }
1330
1331 # shellcheck disable=SC2120
1332 gitroot() {
1333   local help="Usage: gitroot [--help]
1334 Print the full path to the root of the current git repo
1335
1336 Handles being within a .git directory, unlike git rev-parse --show-toplevel,
1337 and works in older versions of git which did not have that."
1338   if [[ $1 == --help ]]; then
1339     echo "$help"
1340     return
1341   fi
1342   local p
1343   p=$(git rev-parse --git-dir) || { echo "error: not in a git repo" ; return 1; }
1344   [[ $p != /* ]] && p=$PWD
1345   echo "${p%%/.git}"
1346 }
1347
1348 g() {
1349
1350   # todo: patch emacs so it will look elsewhere. this is kinda sad:
1351   # https://emacs.stackexchange.com/questions/4253/how-to-start-emacs-with-a-custom-user-emacs-directory
1352
1353   local args gdb=false
1354
1355   if [[ $EMACSDIR ]]; then
1356     path-add "$EMACSDIR/lib-src" "$EMACSDIR/src"
1357   fi
1358
1359   if [[ $DISPLAY ]]; then
1360     args=-n
1361   fi
1362
1363   if (( $# == 0 )); then
1364     args+=" -c"
1365   fi
1366   # duplicate -c, but oh well
1367   if ! pgrep -u $EUID emacsclient; then
1368     if (( $# == 0 )) && type -p gdb &>/dev/null; then
1369       gdb=true
1370     else
1371       args+=" -c"
1372     fi
1373   fi
1374   if [[ $EMACSDIR ]]; then
1375     # Alter the path here, otherwise the nfs mount gets triggered on the
1376     # first path lookup when emacs is not being used.
1377     PATH="$EMACSDIR/lib-src:$EMACSDIR/src:$PATH" EHOME=$HOME HOME=$EMACSDIR m emacsclient -a "" $args "$@"
1378   else
1379     if $gdb; then
1380       # due to a bug, we cant debug from the start unless we get a new gdb
1381       # https://sourceware.org/bugzilla/show_bug.cgi?id=24454
1382       # m gdb -ex="set follow-fork-mode child" -ex=r -ex=quit --args emacs --daemon
1383       m emacsclient -a "" $args "$@"
1384       sleep 1
1385       cd /a/opt/emacs-$(distro-name)$(distro-num)
1386       s gdb -p $(pgrep -f 'emacs --daemon') -ex c
1387       cd -
1388     else
1389       m emacsclient -a "" $args "$@"
1390     fi
1391   fi
1392 }
1393
1394 # force terminal version
1395 gn() {
1396   g -n "$@"
1397 }
1398
1399 gmacs() {
1400   # quit will prompt if the program crashes.
1401   gdb -ex=r -ex=quit --args emacs "$@"; r;
1402 }
1403
1404 gdkill() {
1405   # kill the emacs daemon
1406   pk1 emacs --daemon
1407 }
1408
1409 gr() {
1410   grep -iIP --color=auto "$@" || return $?
1411 }
1412 grr() { # grep recursive
1413   # Don't return 1 on nonmatch because this is meant to be
1414   # interactive, not in a conditional.
1415   if [[ ${#@} == 1 ]]; then
1416     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" . || [[ $? == 1 ]]
1417   else
1418     grep --exclude-dir='*.emacs.d' --exclude-dir='*.git' -riIP --color=auto "$@" || [[ $? == 1 ]]
1419   fi
1420 }
1421 ccomp grep gr grr
1422
1423 rg() { grr "$@"; }
1424 ccomp grep rg
1425
1426 # recursive everything. search for files/dirs and lines. rs = easy chars to press
1427 re() {
1428   local query
1429   query="$1"
1430   find "$@" -not \( -name .svn -prune -o -name .git -prune \
1431        -o -name .hg -prune -o -name .editor-backups -prune \
1432        -o -name .undo-tree-history -prune \) 2>/dev/null | grep -iP --color=auto "$query"
1433   grr -m 5 "$@"
1434 }
1435
1436 hr() { # horizontal row. used to break up output
1437   printf "$(tput setaf 5 2>/dev/null ||:)█$(tput sgr0 2>/dev/null||:)%.0s" $(eval echo "{1..${COLUMNS:-60}}")
1438   echo
1439 }
1440 # highlight
1441 hl() {
1442   local col input_len=0
1443   for arg; do
1444     input_len=$((input_len + 1 + ${#arg}))
1445   done
1446   col=$((60 - input_len))
1447   printf "\e[1;97;41m%s" "$*"
1448   if (( col > 0 )); then
1449     printf "\e[1;97;41m \e[0m%.0s" $(eval echo "{1..${col}}")
1450   fi
1451   echo
1452 }
1453 hlm() { hl "$*";  "$@"; }
1454
1455 hrcat() { local f; for f; do [[ -f $f ]] || continue; hr; echo "$f"; cat "$f"; done }
1456
1457
1458 # get latest hub and run it
1459 # main command to use:
1460 # hub pull-request --no-edit
1461 # --no-edit means to use the first commit\'s message as the pull request message.
1462 # If that fails, try doing
1463 # hub pull-request --no-edit -b UPSTREAM_OWNER:branch
1464 # where branch is usually master. it does the pr against your current branch.
1465 #
1466 # On first use, you input username/pass and it gets an oath token so you dont have to repeat
1467 # it\'s at ~/.config/hub
1468 hub() {
1469   local up uptar updir p v
1470   # example https://github.com/github/hub/releases/download/v2.14.2/hub-linux-amd64-2.14.2.tgz
1471   up=$(wget -q -O- https://api.github.com/repos/github/hub/releases/latest | jq -r .assets[].browser_download_url | grep linux-amd64)
1472   re='[[:space:]]'
1473   if [[ ! $up || $up == $re ]]; then
1474     echo "failed to get good update url. got: $up"
1475   fi
1476   uptar=${up##*/}
1477   updir=${uptar%.tgz}
1478   if [[ ! -e /a/opt/$updir ]]; then
1479     rm -rf /a/opt/hub-linux-amd64*
1480     wget -P /a/opt $up
1481     tar -C /a/opt -zxf /a/opt/$uptar
1482     rm -f /a/opt/$uptar
1483   fi
1484   if ! which hub &>/dev/null; then
1485     sudo /a/opt/$updir/install
1486   fi
1487
1488   # save token across computers
1489   if [[ ! -L ~/.config/hub ]]; then
1490     if [[ -e ~/.config/hub  ]]; then
1491       mv ~/.config/hub /p/c/subdir_files/.config/
1492     fi
1493     if [[ -e /p/c/subdir_files/.config/hub ]]; then
1494       conflink
1495     fi
1496   fi
1497   command hub "$@"
1498 }
1499
1500 i() { git "$@"; }
1501 ccomp git i
1502
1503 # git status:
1504 # cvs -qn update
1505
1506 # git checkout FILE
1507 # cvs update -C FILE
1508
1509 # git pull
1510 # cvs up[date]
1511
1512 # potentially useful command translation
1513 # https://fling.seas.upenn.edu/~giesen/dynamic/wordpress/equivalent-commands-for-git-svn-and-cvs/
1514
1515 # importing cvs repo into git using git-cvs package:
1516 # /f/www $ /usr/lib/git-core/git-cvsimport -C /f/www-git
1517
1518 ic() {
1519   # fast commit all
1520   git commit -am "$*"
1521 }
1522
1523 ipp() {
1524   git pull
1525   git push
1526 }
1527
1528 ifn() {
1529   local glob
1530   glob="$1"
1531   shift
1532   find -L "$@" -not \( -name .svn -prune -o -name .git -prune \
1533        -o -name .hg -prune -o -name .editor-backups -prune \
1534        -o -name .undo-tree-history -prune \) -iname "*$glob*" 2>/dev/null
1535 }
1536
1537 ifh() {
1538   # insensitive find here. args are combined into the search string.
1539   # -L = follow symlinks
1540   find -L . -not \( -name .svn -prune -o -name .git -prune \
1541        -o -name .hg -prune -o -name .editor-backups -prune \
1542        -o -name .undo-tree-history -prune \) -iname "*$**" 2>/dev/null
1543 }
1544
1545 ifd() {
1546   # insensitive find directory
1547   find -L . -type d -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 "*$**" 2>/dev/null
1550 }
1551
1552
1553 ipdrop() {
1554   sudo iptables -A INPUT -s $1 -j DROP
1555 }
1556
1557
1558 istext() {
1559   grep -Il "" "$@" &>/dev/null
1560 }
1561
1562 pst() {
1563   pstree -apnA
1564 }
1565
1566 jtail() {
1567   journalctl -n 10000 -f "$@"
1568 }
1569 jr() { journalctl "$@" ; }
1570 jrf() { journalctl -f "$@" ; }
1571 jru() {
1572   journalctl -u exim4 _SYSTEMD_INVOCATION_ID=$(systemctl show -p InvocationID --value $1)
1573 }
1574
1575
1576
1577 l() {
1578   if [[ $PWD == /[iap] ]]; then
1579     command ls -A --color=auto -I lost+found "$@"
1580   else
1581     command ls -A --color=auto "$@"
1582   fi
1583 }
1584
1585 lcn() { locate -i "*$**"; }
1586
1587 lg() { LC_COLLATE=C.UTF-8 ll --group-directories-first "$@"; }
1588
1589 lt() { ll -tr "$@"; }
1590
1591 lld() { ll -d "$@"; }
1592
1593 ccomp ls l lg lt lld ll
1594
1595 # low recursively
1596 lowr() {
1597   local f dirs i a
1598   local -a all
1599   for dirs in false true; do
1600     for f; do
1601       if [[ -d $f ]]; then
1602         all=("$f"/**)
1603         # reverse the order to rename the nested dirs first.
1604         # note: 0 element is the dir itself
1605         for ((i=${#all[@]}-1; i>=1; i--)); do
1606           a="${all[i]}"
1607           if $dirs && [[ -d $a ]]; then
1608             # e dirs low "$a" # debug
1609             low "$a"
1610           elif ! $dirs && [[ ! -d $a && -e $a ]]; then
1611             # debug
1612             # e not dirs low "$a" # debug
1613             low "$a"
1614           fi
1615         done
1616       fi
1617       # just rename all the top level args on the second pass
1618       if $dirs; then
1619         # e final dirs low "$f" # debug
1620         low "$f"
1621       fi
1622     done
1623   done
1624 }
1625
1626 low() {  # make filenames lowercase, remove bad chars
1627   local arg new dir f
1628   for arg; do
1629     arg="${arg%%+(/)}" # remove trailing slashes. assumes we have extglob on.
1630     dir="${arg%/*}"
1631     if (( ${#dir} == ${#arg} )); then
1632       dir=.
1633     fi
1634     f="${arg##*/}"
1635     new="${f,,}" # downcase
1636     new="${new//[^a-zA-Z0-9._-]/_}" # sub bad chars
1637     new="${new#"${new%%[[:alnum:]]*}"}" # remove leading/trailing non-alnum
1638     new="${new%"${new##*[[:alnum:]]}"}"
1639     # remove bad underscores, like __ and _._
1640     new=$(echo $new | sed -r 's/__+/_/g;s/_+([.-])|([.-])_+/\1/g')
1641     safe_rename "$dir/$f" "$dir/$new" || return 1
1642   done
1643   return 0
1644 }
1645
1646 lower() { # make first letter of filenames lowercase.
1647   local x
1648   for x in "$@"; do
1649     if [[ ${x::1} == [A-Z] ]]; then
1650       y=$(tr '[:upper:]' '[:lower:]' <<<"${x::1}")"${x:1}"
1651       safe_rename "$x" "$y" || return 1
1652     fi
1653   done
1654 }
1655
1656
1657 k() { # history search
1658   grep -iP --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | tail -n 80 || [[ $? == 1 ]];
1659 }
1660 ks() { # history search with context
1661   # args are an extended regex used by sed
1662   history | sed -nr "h;s/^\s*(\S+\s+){4}//;/$*/{g;p}" | tail -n 80 || [[ $? == 1 ]];
1663 }
1664 ksu() { # history search unique
1665   grep -P --binary-files=text "$@" ${HISTFILE:-~/.bash_history}  | uniq || [[ $? == 1 ]];
1666 }
1667
1668 # todo: id like to do maybe a daily or hourly cronjob to
1669 # check that my history file size is increasing. Ive had it
1670 # inexplicably truncated in the past.
1671 histrm() {
1672   history -n
1673   HISTTIMEFORMAT= history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/'
1674   read -r -p "press anything but contrl-c to delete"
1675   for entry in $(HISTTIMEFORMAT= history | awk -v IGNORECASE=1 '{ a=$1; sub(/^ *[^ ]+ */, "") }; /'"$*"'/ { print a }' | tac); do
1676     history -d $entry
1677   done
1678   history -w
1679 }
1680
1681 ccomp grep k ks ksu histrm
1682
1683
1684 make-targets() {
1685   # show make targets, via http://stackoverflow.com/questions/3063507/list-goals-targets-in-gnu-make
1686   make -qp | awk -F':' '/^[a-zA-Z0-9][^$#\/\t=]*:([^=]|$)/ {split($1,A,/ /);for(i in A)print A[i]}'
1687 }
1688
1689 mkc() {
1690   mkdir "$1"
1691   c "$1"
1692 }
1693 ccomp mkdir mkc
1694
1695 mkct() {
1696   mkc $(mktemp -d)
1697 }
1698 # mkdir the last arg, cp the rest into it
1699 mkcp() {
1700   mkdir -p "${@: -1}"
1701   cp "${@:1:$#-1}" "${@: -1}"
1702 }
1703 mkmv() {
1704   mkdir -p "${@: -1}"
1705   mv "${@:1:$#-1}" "${@: -1}"
1706 }
1707
1708 mkt() { # mkdir and touch file
1709   local path="$1"
1710   mkdir -p "$(dirname "$path")"
1711   touch "$path"
1712 }
1713
1714 # shellcheck disable=SC2032
1715 mkdir() { command mkdir -p "$@"; }
1716
1717 nags() {
1718   # https://github.com/HenriWahl/Nagstamon/issues/357
1719   if ! pgrep -f /usr/lib/notification-daemon/notification-daemon >/dev/null; then
1720     /usr/lib/notification-daemon/notification-daemon &
1721   fi
1722   /usr/bin/nagstamon &
1723 }
1724
1725 nmt() {
1726   # cant use s because sudo -i doesnt work for passwordless sudo command
1727   case $EUID in
1728     0)
1729       sudo nmtui-connect "$@"
1730       ;;
1731     *)
1732       nmtui-connect "$@"
1733       ;;
1734   esac
1735 }
1736
1737
1738 ngset() {
1739   if shopt nullglob >/dev/null; then
1740     ngreset=false
1741   else
1742     shopt -s nullglob
1743     ngreset=true
1744   fi
1745 }
1746 ngreset() {
1747   if $ngreset; then
1748     shopt -u nullglob
1749   fi
1750 }
1751
1752 nopanic() {
1753   # shellcheck disable=SC2024
1754   ngset
1755   for f in /var/log/exim4/paniclog /var/log/exim4/*panic; do
1756     base=${f##*/}
1757     if [[ -s $f ]]; then
1758       echo ================== $f =============
1759       s tee -a /var/log/exim4/$base-archive <$f
1760       s truncate -s0 $f
1761     fi
1762   done
1763   ngreset
1764 }
1765
1766
1767 ping() { command ping -O "$@"; }
1768 p8() { ping "$@" 8.8.8.8; }
1769 p6() { ping6 "$@" 2001:4860:4860::8888; }
1770
1771 pkx() { # package extract
1772   local pkg cached tmp f
1773   c $(mktemp -d)
1774   pkg=$1
1775   # shellcheck disable=SC2012
1776   cached=$(ls -t /var/cache/apt/archives/$pkg* | tail -n1 2>/dev/null) ||:
1777   if [[ $cached ]]; then
1778     cp $cached .
1779   else
1780     aptitude download $pkg || return 1
1781   fi
1782   tmp=(*); f=${tmp[0]} # only 1 expected
1783   ex $f
1784   rm -f $f
1785 }
1786
1787 # pgrep and kill
1788 pk1() {
1789   local pid
1790   pid=($(pgrep -f "$*"))
1791   case ${#pid[@]} in
1792     1)
1793       # shellcheck disable=SC2128
1794       {
1795         ps -F $pid
1796         m kill $pid
1797       }
1798       ;;
1799     0) echo "no pid found" ;;
1800     *)
1801       ps -F ${pid[@]}
1802       ;;
1803   esac
1804 }
1805
1806 psg () {
1807   local x y help
1808   help="Usage: psg [--help] GREP_ARGS
1809 grep ps and output in a nice format"
1810   if [[ $1 == --help ]]; then
1811     echo "$help"
1812     return
1813   fi
1814   x=$(ps -eF)
1815   # final grep is because some commands tend to have a lot of trailing spaces
1816   y=$(echo "$x" | grep -iP "$@" | grep -o '.*[^ ]') ||:
1817   if [[ $y ]]; then
1818     echo "$x" | head -n 1 || [[ $? == 141 ]]
1819     echo "$y"
1820   fi
1821 }
1822
1823 pubip() { curl -4s https://icanhazip.com; }
1824 pubip6() { curl -6s https://icanhazip.com; }
1825 whatismyip() { pubip; }
1826
1827
1828 q() { # start / launch a program in the backround and redir output to null
1829   "$@" &> /dev/null &
1830 }
1831
1832 # shellcheck disable=SC2120
1833 r() {
1834   if [[ $HISTFILE ]]; then
1835     history -a # save history
1836   fi
1837   trap ERR # this avoids a segfault
1838   exit ${1:0}
1839   # i had this redir, not sure why
1840   #  exit "$@" 2>/dev/null
1841 }
1842
1843 # scp is insecure and deprecated.
1844 scp() {
1845   rsync -Pt --inplace "$@"
1846 }
1847 ccomp rsync scp
1848
1849 randport() {
1850   # available high ports are 1024-65535,
1851   # but lets skip things that are more likely to be in use
1852   python3 <<'EOF'
1853 import secrets
1854 print(secrets.SystemRandom().randrange(10002,65500))
1855 EOF
1856 }
1857
1858 # reapply bashrc
1859 reb() {
1860   source ~/.bashrc
1861 }
1862
1863 rl() {
1864   readlink -f "$@"
1865 }
1866 ccomp readlink rl
1867
1868 rsd() {
1869   # rsync, root is required to keep permissions right.
1870   # rsync  --archive --human-readable --verbose --itemize-changes --checksum \(-ahvic\) \
1871     #                                   --no-times --delete
1872   # basically, make an exact copy, use checksums instead of file times to be more accurate
1873   rsync -ahvic --delete "$@"
1874 }
1875 rsa() {
1876   # like rlu, but dont delete files on the target end which
1877   # do not exist on the original end.
1878   rsync -ahvic "$@"
1879 }
1880 rst() {
1881   # rl without preserving modification time.
1882   rsync -ahvic --delete --no-t "$@"
1883 }
1884 # [RSYNC_OPTS] HOST PATH
1885 rsu() {
1886   # eg. rsu -opts frodo /testpath
1887   # relative paths will expanded with readlink -f.
1888   opts=("${@:1:$#-2}") #  1 to last -2
1889   path="${*:$#}" # last
1890   host="${*:$#-1:1}" # last -1
1891   if [[ $path == .* ]]; then
1892     path=$(readlink -f $path)
1893   fi
1894   m rsync -ahvi --relative --no-implied-dirs "${opts[@]}" "$path" "root@$host:/";
1895 }
1896 ccomp rsync rsd rsa rst rsu
1897
1898 # find programs listening on a port
1899 ssp() {
1900   local port=$1
1901   # to figure out these args, i had to look at the man page from git version, as of 2022-04.
1902   s ss -lpn state listening sport = $port
1903 }
1904
1905 resolvcat() {
1906   local f
1907   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1908     m s nscd -i hosts
1909   fi
1910   f=/etc/resolv.conf
1911   echo $f:;  ccat $f
1912   hr; s ss -lpn sport = 53
1913   if systemctl is-enabled dnsmasq &>/dev/null || [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1914     # this will fail is dnsmasq is failed
1915     hr; m ser status dnsmasq | cat || :
1916     f=/etc/dnsmasq.conf
1917     hr; echo $f:;  ccat $f
1918     hr; m grr '^ *(servers-file|server) *=|^ *no-resolv *$' /etc/dnsmasq.conf /etc/dnsmasq.d
1919     f=/etc/dnsmasq-servers.conf
1920     hr; echo $f:;  ccat $f
1921   fi
1922   hr
1923   echo /etc/nsswitch.conf:
1924   grep '^ *hosts:' /etc/nsswitch.conf
1925   if systemctl is-enabled systemd-resolved &>/dev/null || [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
1926     hr; m ser status systemd-resolved | cat || :
1927     hr; m resolvectl status | cat
1928   fi
1929
1930 }
1931 rcat() {
1932   resolvcat | less
1933 }
1934 reresolv() {
1935   if [[ $(systemctl is-active nscd ||:) != inactive ]]; then
1936     m ser stop nscd
1937     sleep .5
1938     m ser start nscd
1939     m sudo nscd -i hosts
1940   fi
1941   if [[ $(systemctl is-active dnsmasq ||:) != inactive ]]; then
1942     m sudo systemctl restart dnsmasq
1943   fi
1944   if [[ $(systemctl is-active systemd-resolved ||:) != inactive ]]; then
1945     m sudo systemctl restart systemd-resolved
1946   fi
1947   if type -P resolvectl &>/dev/null; then
1948     resolvectl flush-caches
1949   fi
1950 }
1951
1952 # add annoyingly long argument which should be the default
1953 sedi() {
1954   sed -i --follow-symlinks "$@"
1955 }
1956
1957 rmstrips() {
1958   ssh fencepost head -n 300 /gd/gnuorg/EventAndTravelInfo/rms-current-trips.txt | less
1959 }
1960
1961 urun () {
1962   umask $1
1963   shift
1964   "$@"
1965 }
1966 sudo () {
1967   command sudo "$@" || return $?
1968   DID_SUDO=true
1969 }
1970 s() {
1971   # background
1972   # I use a function because otherwise we cant use in a script,
1973   # cant assign to variable.
1974   #
1975   # note: gksudo is recommended for X apps because it does not set the
1976   # home directory to the same, and thus apps writing to ~ fuck things up
1977   # with root owned files.
1978   #
1979   if [[ $EUID != 0 || $1 == -* ]]; then
1980     # shellcheck disable=SC2034
1981     SUDOD="$PWD" command sudo -i "$@"
1982     DID_SUDO=true
1983   else
1984     "$@"
1985   fi
1986 }
1987 sb() { # sudo bash -c
1988   # use sb instead of s is for sudo redirections,
1989   # eg. sb 'echo "ok fine" > /etc/file'
1990   # shellcheck disable=SC2034
1991   local SUDOD="$PWD"
1992   sudo -i bash -c "$@"
1993 }
1994 # secret sudo
1995 se() { s urun 0077 "$@"; }
1996 ccomp sudo s sb se
1997
1998 safe_rename() { # warn and dont rename if file exists.
1999   # mv -n exists, but it\'s silent
2000   if [[ $# != 2 ]]; then
2001     echo safe_rename error: $# args, need 2 >2
2002     return 1
2003   fi
2004   if [[ $1 != "$2" ]]; then # yes, we want to silently ignore this
2005     if [[ -e $2 || -L $2 ]]; then
2006       echo "Cannot rename $1 to $2 as it already exists."
2007     else
2008       mv -vi "$1" "$2"
2009     fi
2010   fi
2011 }
2012
2013
2014 sd() {
2015   sudo dd status=none of="$1"
2016 }
2017
2018 ser() {
2019   if type -p systemctl &>/dev/null; then
2020     s systemctl "$@"
2021   else
2022     if (( $# >= 3 )); then
2023       echo iank: ser expected 2 or less arguments
2024       return 1
2025     fi
2026     s service $2 $1
2027   fi
2028 }
2029 serstat() {
2030   systemctl -n 40 status "$@"
2031 }
2032
2033 seru() { systemctl --user "$@"; }
2034 # like restart, but do nothing if its not already started
2035 srestart() {
2036   local service=$1
2037   if [[ $(s systemctl --no-pager show -p ActiveState $service ) == ActiveState=active ]]; then
2038     systemctl restart $service
2039   fi
2040 }
2041
2042 setini() { # set a value in a .ini style file
2043   key="$1" value="$2" section="$3" file="$4"
2044   if [[ -s $file ]]; then
2045     sed -ri -f - "$file" <<EOF
2046 # remove existing keys
2047 / *\[$section\]/,/^ *\[[^]]+\]/{/^\s*$key[[:space:]=]/d}
2048 # add key
2049 /^\s*\[$section\]/a $key=$value
2050 # from section to eof, do nothing
2051 /^\s*\[$section\]/,\$b
2052 # on the last line, if we haven't found section yet, add section and key
2053 \$a [$section]\\
2054 $key=$value
2055 EOF
2056   else
2057     cat >"$file" <<EOF
2058 [$section]
2059 $key=$value
2060 EOF
2061   fi
2062 }
2063
2064 sgo() { # service go
2065   service=$1
2066   ser restart $service || return 1
2067   if type -p systemctl &>/dev/null; then
2068     ser enable $service
2069   fi
2070 }
2071 soff () {
2072   for service; do
2073     # ignore services that dont exist
2074     if systemctl cat $service &>/dev/null; then
2075       ser stop $service;
2076       ser disable $service
2077     fi
2078   done
2079 }
2080
2081 sgu() {
2082   systemctl list-unit-files | rg "$@"
2083 }
2084
2085
2086 sk() {
2087
2088
2089   # disable a warning with:
2090   # shellcheck disable=SC2206 # reasoning
2091
2092   # see bash-template/style-guide.md for justifications
2093
2094   local quotes others
2095   quotes=2048,2068,2086,2206
2096   others=2029,2033,2054,2164
2097   shellcheck -W 999 -x -e $quotes,$others "$@" || return $?
2098 }
2099
2100
2101 # sl: ssh, but firsh rsync our bashrc and related files to a special
2102 # directory on the remote host if needed.
2103
2104 # Some environment variables and files need to be setup for this to work
2105 # (mine are set at the beginning of this file)
2106
2107 # SL_FILES_DIR: Environment variable. Path to folder which should at
2108 # least have a .bashrc file or symlink. This dir will be rsynced to ~ on
2109 # remote hosts (top level symlinks are resolved) unless the host already
2110 # has a $SL_FILES_DIR/.bashrc. In that case, we assume it is a host you
2111 # control and sync files to separately and already has the ~/.bashrc you
2112 # want. The remote bash will also take its .inputrc config from this
2113 # folder (default of not existing is fine). Mine looks like this:
2114 # https://iankelling.org/git/?p=distro-setup;a=tree;f=sl/.iank
2115
2116 # SL_INFO_DIR: Environment variable. This folder stores info about what
2117 # we detected on the remote system and when we last synced. It will be created
2118 # if it does not exist. Sometimes you may want to forget about a
2119 # remote system, you can use sl --rsync, or the function for that slr
2120 # below.
2121
2122 # SL_TEST_CMD: Env var. Meant to be used to vary the files synced
2123 # depending on the remote host. Run this string on the remote host the
2124 # first time sl is run (or if we run slr). The result is passed to
2125 # SL_TEST_HOOK. For example,
2126 # export SL_TEST_CMD=". /etc/os-release ; echo \${VERSION//[^a-zA-Z0-9]/}"
2127
2128 # SL_TEST_HOOK: Env var. It is run as $SL_TEST_HOOK. This can set
2129 # $SL_FILES_DIR to vary the files synced.
2130
2131 # SL_RSYNC_ARGS: Env var. String of arguments passed to rsync. For
2132 # example to exclude files within a directory. Note, excluded
2133 # files wont be deleted on rsync, you can add --delete-excluded
2134 # to the rsync command if that is desired.
2135
2136 # SL_SSH_ARGS: Env var. Default arguments passed to ssh.
2137
2138 # For when ~/.bashrc is already customized on the remote server, you
2139 # might find it problematic that ~/.bashrc is sourced for ALL ssh
2140 # commands, even in scripts. This paragraph is all about that. bash
2141 # scripts dont source ~/.bashrc, but call ssh in scripts and you get
2142 # ~/.bashrc. You dont want this. .bashrc is meant for interactive shells
2143 # and if you customize it, probably has bugs from time to time. This is
2144 # bad. Here's how I fix it. I have a special condition to "return" in my
2145 # .bashrc for noninteractive ssh shells (copy that code). Then use this
2146 # function or similar that passes LC_USEBASHRC=t when sshing and I want
2147 # my bashrc. Also, I don't keep most of my bashrc in .bashrc, i source a
2148 # separate file because even if I return early on, the whole file gets
2149 # parsed which can fail if there is a syntax error.
2150 sl() {
2151   # Background on LC_USEBASHRC var (no need to read if you just want to
2152   # use this function): env variables sent across ssh are strictly
2153   # limited, but we get LC_* at least in debian based machines, so we
2154   # just make that * be something no normal program would use. Note, on
2155   # hosts that dont allow LC_* I start an inner shell with LC_USEBASHRC
2156   # set, and the inner shell also allows running a nondefault
2157   # .bashrc. This means the outer shell still ran the default .bashrc,
2158   # but that is the best we can do.
2159
2160   local now args remote dorsync haveinfo tmpa sshinfo tmp tmp2 type info_sec force_rsync \
2161         sync_dirname testcmd extra_info testbool files_sec sl_test_cmd sl_test_hook
2162   declare -a args tmpa
2163
2164   args=($SL_SSH_ARGS)
2165
2166   # ssh [-1246Antivivisectionist] [-b bind_address] [-c cipher_spec] [-D [bind_address:]port]
2167   # [-E log_file] [-e escape_char] [-F configfile] [-I pkcs11] [-i identity_file] [-L address]
2168   # [-l login_name] [-m mac_spec] [-O ctl_cmd] [-o option] [-p port] [-Q query_option]
2169   # [-R address] [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]] [user@]hostname
2170   # [command]
2171
2172   # ssh [-46AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c cipher_spec]
2173   # [-D [bind_address:]port] [-E log_file] [-e escape_char]
2174   # [-F configfile] [-I pkcs11] [-i identity_file]
2175   # [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
2176   # [-O ctl_cmd] [-o option] [-p port] [-Q query_option] [-R address]
2177   # [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
2178
2179   force_rsync=false
2180   if [[ $1 == --rsync ]]; then
2181     force_rsync=true
2182     shift
2183   fi
2184
2185   sl_test_cmd=$SL_TEST_CMD
2186   sl_test_hook=$SL_TEST_HOOK
2187   sl_rsync_args=$SL_RSYNC_ARGS
2188   while [[ $1 ]]; do
2189     case "$1" in
2190       --rsync)
2191         force_rsync=true
2192         ;;
2193       --sl-test-cmd)
2194         sl_test_cmd="$2"
2195         shift
2196         ;;
2197       --sl-test-hook)
2198         sl_test_hook="$2"
2199         shift
2200         ;;
2201       --sl-rsync-args)
2202         sl_rsync_args="$2"
2203         shift
2204         ;;
2205       *)
2206         break
2207         ;;
2208     esac
2209     shift
2210   done
2211
2212   while [[ $1 ]]; do
2213     case "$1" in
2214       # note we dont support things like -4oOption
2215       -[46AaCfGgKkMNnqsTtVvXxYy]*)
2216         args+=("$1"); shift
2217         ;;
2218       -[bcDEeFIiJLlmOopQRSWw]*)
2219         # -oOption etc is valid
2220         if (( ${#1} >= 3 )); then
2221           args+=("$1"); shift
2222         else
2223           args+=("$1" "$2"); shift 2
2224         fi
2225         ;;
2226       *)
2227         break
2228         ;;
2229     esac
2230   done
2231   remote="$1"
2232   if [[ ! $remote ]]; then
2233     echo $0: error hostname required >&2
2234     return 1
2235   fi
2236   shift
2237
2238   if [[ ! $SL_INFO_DIR  ]]; then
2239     echo error: missing '$SL_INFO_DIR' env var >&2
2240     return 1
2241   fi
2242
2243   dorsync=false
2244   haveinfo=false
2245   tmpa=($SL_INFO_DIR/???????????"$remote")
2246   sshinfo=${tmpa[0]}
2247   if [[ -e $sshinfo ]]; then
2248     if $force_rsync; then
2249       rm -f $sshinfo
2250     else
2251       haveinfo=true
2252     fi
2253   fi
2254   if $haveinfo; then
2255     tmp=${sshinfo[0]##*/}
2256     tmp2=${tmp::11}
2257     type=${tmp2: -1}
2258     extra_info=$(cat $sshinfo)
2259   else
2260     # we test for string to know ssh succeeded
2261     testbool="test -e $SL_FILES_DIR/.bashrc -a -L .bashrc -a -v LC_USEBASHRC"
2262     testcmd="if $testbool; then printf y; else printf n; fi"
2263     if ! tmp=$(LC_USEBASHRC=y command ssh "${args[@]}" "$remote" "$testcmd; $sl_test_cmd"); then
2264       echo failed sl test. doing plain ssh -v
2265       command ssh -v "${args[@]}" "$remote"
2266     fi
2267     if [[ $tmp == y* ]]; then
2268       type=a
2269     else
2270       dorsync=true
2271       type=b
2272     fi
2273     extra_info="${tmp:1}"
2274   fi
2275   if [[ $sl_test_hook ]]; then
2276     RSYNC_RSH="ssh ${args[*]}" $sl_test_hook "$extra_info" "$remote"
2277   fi
2278
2279   if $haveinfo && [[ $type == b ]]; then
2280     info_sec=${tmp::10}
2281     read files_sec _ < <(find -L $SL_FILES_DIR -printf "%T@ %p\n" | sort -nr || [[ $? == 141 || ${PIPESTATUS[0]} == 32 ]]  )
2282     files_sec=${files_sec%%.*}
2283     if (( files_sec > info_sec )); then
2284       dorsync=true
2285       rm -f $sshinfo
2286     fi
2287   fi
2288
2289   sync_dirname=${SL_FILES_DIR##*/}
2290
2291   if [[ ! $SL_FILES_DIR  ]]; then
2292     echo error: missing '$SL_FILES_DIR' env var >&2
2293     return 1
2294   fi
2295
2296   if $dorsync; then
2297     RSYNC_RSH="ssh ${args[*]}" m rsync -rptL --delete $sl_rsync_args $SL_FILES_DIR "$remote":
2298   fi
2299   if $dorsync || ! $haveinfo; then
2300     sshinfo=$SL_INFO_DIR/$EPOCHSECONDS$type"$remote"
2301     [[ -e $SL_INFO_DIR ]] || mkdir -p $SL_INFO_DIR
2302     printf "%s\n" "$extra_info" >$sshinfo
2303     chmod 666 $sshinfo
2304   fi
2305   if [[ $type == b ]]; then
2306     if (( ${#@} )); then
2307       # Theres a couple ways to pass arguments, im not sure whats best,
2308       # but relying on bash 4.4+ escape quoting seems most reliable.
2309       command ssh "${args[@]}" "$remote" \
2310               LC_USEBASHRC=t bash -c '.\ '$sync_dirname'/.bashrc\;"\"\$@\""' bash ${@@Q}
2311     elif [[ ! -t 0 ]]; then
2312       # This case is when commands are being piped to ssh.
2313       # Normally, no bashrc gets sourced.
2314       # But, since we are doing all this, lets source it because we can.
2315       cat <(echo . $sync_dirname/.bashrc) - | command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2316     else
2317       command ssh -t "${args[@]}" "$remote" LC_USEBASHRC=t INPUTRC=$sync_dirname/.inputrc bash --rcfile $sync_dirname/.bashrc
2318     fi
2319   else
2320     if [[ -t 0 ]]; then
2321       LC_USEBASHRC=t command ssh "${args[@]}" "$remote" ${@@Q}
2322     else
2323       command ssh "${args[@]}" "$remote" LC_USEBASHRC=t bash
2324     fi
2325   fi
2326   # this function inspired from https://github.com/Russell91/sshrc
2327 }
2328
2329 slr() {
2330   sl --rsync "$@"
2331 }
2332 sss() { # ssh solo
2333   sl -oControlMaster=no -oControlPath=/ "$@"
2334 }
2335 # kill off old shared socket then ssh
2336 ssk() {
2337   m ssh -O exit "$@" || [[ $? == 255 ]]
2338   m sl "$@"
2339 }
2340 ccomp ssh sl slr sss ssk
2341 # plain ssh
2342 ssh() {
2343   if [[ $TERM == alacritty || $TERM == xterm-kitty ]]; then
2344     TERM=xterm-256color LC_USEBASHRC=t command ssh "$@"
2345   else
2346     LC_USEBASHRC=t command ssh "$@"
2347   fi
2348 }
2349
2350
2351 slog() {
2352   # log with script. timing is $1.t and script is $1.s
2353   # -l to save to ~/typescripts/
2354   # -t to add a timestamp to the filenames
2355   local logdir do_stamp arg_base
2356   (( $# >= 1 )) || { echo "arguments wrong"; return 1; }
2357   logdir="/a/dt/"
2358   do_stamp=false
2359   while getopts "lt" option
2360   do
2361     case $option in
2362       l ) arg_base=$logdir ;;
2363       t ) do_stamp=true ;;
2364     esac
2365   done
2366   shift $((OPTIND - 1))
2367   arg_base+=$1
2368   [[ -e $logdir ]] || mkdir -p $logdir
2369   $do_stamp && arg_base+=$(date +%F.%T%z)
2370   script -t $arg_base.s 2> $arg_base.t
2371 }
2372 splay() { # script replay
2373   #logRoot="$HOME/typescripts/"
2374   #scriptreplay "$logRoot$1.t" "$logRoot$1.s"
2375   scriptreplay "$1.t" "$1.s"
2376 }
2377
2378 sr() {
2379   # sudo redo. be aware, this command may not work right on strange distros or earlier software
2380   if [[ $# == 0 ]]; then
2381     sudo -E bash -c -l "$(history -p '!!')"
2382   else
2383     echo this command redos last history item. no argument is accepted
2384   fi
2385 }
2386
2387 srm () {
2388   # with -ll, less secure but faster.
2389   command srm -ll "$@"
2390 }
2391
2392 srun() {
2393   scp $2 $1:/tmp
2394   ssh $1 /tmp/${2##*/} $(printf "%q\n" "${@:2}")
2395 }
2396
2397
2398 swap() {
2399   local tmp
2400   tmp=$(mktemp)
2401   mv $1 $tmp
2402   mv $2 $1
2403   mv $tmp $2
2404 }
2405
2406 tclock() { # terminal clock
2407   local x
2408   clear
2409   date +%l:%_M
2410   len=60
2411   # this goes to full width
2412   #len=${1:-$((COLUMNS -7))}
2413   x=1
2414   while true; do
2415     if (( x == len )); then
2416       end=true
2417       d="$(date +%l:%_M)   "
2418     else
2419       end=false
2420       d=$(date +%l:%M:%_S)
2421     fi
2422     echo -en "\r"
2423     echo -n "$d"
2424     for ((i=0; i<x; i++)); do
2425       if (( i % 6 )); then
2426         echo -n _
2427       else
2428         echo -n .
2429       fi
2430     done
2431     if $end; then
2432       echo
2433       x=1
2434     else
2435       x=$((x+1))
2436     fi
2437     sleep 5
2438   done
2439 }
2440
2441
2442 te() {
2443   # test existence / exists
2444   local ret=0
2445   for x in "$@"; do
2446     [[ -e "$x" || -L "$x" ]] || ret=1
2447   done
2448   return $ret
2449 }
2450
2451 psoff() {
2452   # normally, i would just execute these commands in the function.
2453   # however, DEBUG is not inherited, so we need to run it outside a function.
2454   # And we want to run set -x afterwards to avoid spam, so we cram everything
2455   # in here, and then it will run after this function is done.
2456   PROMPT_COMMAND='trap DEBUG; unset PROMPT_COMMAND; PS1="\w \$ "'
2457 }
2458 pson() {
2459   PROMPT_COMMAND=prompt-command
2460   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2461     trap 'settitle "$BASH_COMMAND"' DEBUG
2462   fi
2463 }
2464
2465 # prometheus node curl
2466 pnodecurl() {
2467   local host
2468   host=${1:-127.0.0.1}
2469   s curl --cert-type PEM --cert /etc/prometheus/ssl/prometheus_cert.pem --key /etc/prometheus/ssl/prometheus_key.pem --cacert /etc/prometheus/ssl/prom_node_cert.pem --resolve prom_node:9100:$host -v https://prom_node:9100/metrics
2470 }
2471
2472 tx() { # toggle set -x, and the prompt so it doesnt spam
2473   if [[ $- == *x* ]]; then
2474     set +x
2475     pson
2476   else
2477     psoff
2478   fi
2479 }
2480
2481 psnetns() {
2482   # show all processes in the network namespace $1.
2483   # blank entries appear to be subprocesses/threads
2484   local x netns
2485   netns=$1
2486   ps -w | head -n 1
2487   sudo find -L /proc/[1-9]*/task/*/ns/net -samefile /run/netns/$netns | cut -d/ -f5 | \
2488     while read -r l; do
2489       x=$(ps -w --no-headers -p $l);
2490       if [[ $x ]]; then echo "$x"; else echo $l; fi;
2491     done
2492 }
2493 nonet() {
2494   if ! s ip netns list | grep -Fx nonet &>/dev/null; then
2495     s ip netns add nonet
2496   fi
2497   sudo -E env /sbin/ip netns exec nonet sudo -E -u iank /bin/bash
2498 }
2499
2500 m() { printf "%s\n" "$*";  "$@"; }
2501
2502 # update file. note: duplicated in mail-setup
2503 u() {
2504   local tmp tmpdir dest="$1"
2505   local base="${dest##*/}"
2506   local dir="${dest%/*}"
2507   if [[ $dir != "$base" ]]; then
2508     # dest has a directory component
2509     mkdir -p "$dir"
2510   fi
2511   ur=false # u result
2512   tmpdir=$(mktemp -d)
2513   cat >$tmpdir/"$base"
2514   tmp=$(rsync -ic $tmpdir/"$base" "$dest")
2515   if [[ $tmp ]]; then
2516     printf "%s\n" "$tmp"
2517     ur=true
2518     if [[ $dest == /etc/systemd/system/* ]]; then
2519       reload=true
2520     fi
2521   fi
2522   rm -rf $tmpdir
2523 }
2524
2525
2526 uptime() {
2527   if type -p uprecords &>/dev/null; then
2528     uprecords -B
2529   else
2530     command uptime
2531   fi
2532 }
2533
2534 virshrm() {
2535   for x in "$@"; do virsh destroy "$x"; virsh undefine "$x"; done
2536 }
2537
2538 vm-set-listen(){
2539   local t
2540   t=$(mktemp)
2541   local vm=$1
2542   local ip=$2
2543   sudo virsh dumpxml $vm | sed -r "s/(<listen.*address=')([^']+)/\1$ip/" | \
2544     sed -r "s/listen='[^']+/listen='$ip/"> $t
2545   sudo virsh undefine $vm
2546   sudo virsh define $t
2547 }
2548
2549
2550 vmshare() {
2551   vm-set-listen $1 0.0.0.0
2552 }
2553
2554
2555 vmunshare() {
2556   vm-set-listen $1 127.0.0.1
2557 }
2558
2559 myiwscan() {
2560   # find input, copy to pattern space, when we find the first field, print the copy in different order without newlines.
2561   # instead of using labels, we could just match a line and group, eg: /signal:/,{s/signal:(.*)/\1/h}
2562   sudo iw dev wls1 scan | sed -rn  "
2563 s/^\Wcapability: (.*)/\1/;Ta;h;b
2564 :a;s/^\Wsignal: -([^.]+).*/\1/;Tb;H;b
2565 # padded to min width of 20
2566 :b;s/\WSSID: (.*)/\1                    /;T;s/^(.{20}(.*[^ ])?) */\1/;H;g;s/(.*)\n(.*)\n(.*)/\2 \3  \1/gp;b
2567 "|sort -r
2568 }
2569
2570 # Run script by copying it to a temporary location first,
2571 # and changing directory, so we don't have any open
2572 # directories or files that could cause problems when
2573 # remounting.
2574 zr() {
2575   local tmp
2576   tmp=$(type -p "$1")
2577   if [[ $tmp ]]; then
2578     cd $(mktemp -d)
2579     cp -a "$tmp" .
2580     shift
2581     ./"${tmp##*/}" "$@"
2582   else
2583     "$@"
2584   fi
2585 }
2586
2587
2588 # * spark
2589 # spark 1 5 22 13 53
2590 #   # => ▁▁▃▂▇
2591
2592 # The MIT License
2593 # Copyright (c) Zach Holman, https://zachholman.com
2594 # https://github.com/holman/spark
2595
2596 # As of 2022-10-28, I reviewed github forks that had several newer
2597 # commits, none had anything interesting. I did a little refactoring
2598 # mostly to fix emacs indent bug.
2599
2600 # Generates sparklines.
2601 _spark_echo()
2602 {
2603   if [ "X$1" = "X-n" ]; then
2604     shift
2605     printf "%s" "$*"
2606   else
2607     printf "%s\n" "$*"
2608   fi
2609 }
2610
2611
2612 spark()
2613 {
2614   local f tc
2615   local n numbers=
2616
2617   # find min/max values
2618   local min=0xffffffff max=0
2619
2620   for n in ${@//,/ }
2621   do
2622     # on Linux (or with bash4) we could use `printf %.0f $n` here to
2623     # round the number but that doesn't work on OS X (bash3) nor does
2624     # `awk '{printf "%.0f",$1}' <<< $n` work, so just cut it off
2625     n=${n%.*}
2626     (( n < min )) && min=$n
2627     (( n > max )) && max=$n
2628     numbers=$numbers${numbers:+ }$n
2629   done
2630
2631   # print ticks
2632   local ticks=(▁ ▂ ▃ ▄ ▅ ▆ ▇ █)
2633
2634   # use a high tick if data is constant
2635   (( min == max )) && ticks=(▅ ▆)
2636
2637   tc=${#ticks[@]}
2638   f=$(( ( (max-min) <<8)/( tc - 1) ))
2639   (( f < 1 )) && f=1
2640
2641   for n in $numbers
2642   do
2643     _spark_echo -n ${ticks[$(( ((($n-$min)<<8)/$f) ))]}
2644   done
2645   _spark_echo
2646 }
2647
2648 pdfwc() { local f; for f; do echo "$f" $(pdfinfo "$f" | awk '/^Pages:/ {print $2}'); done }
2649
2650 # * misc stuff
2651
2652
2653 if $use_color && type -p tput &>/dev/null; then
2654   term_bold="$(tput bold)"
2655   term_red="$(tput setaf 1)"
2656   term_green="$(tput setaf 2)"
2657   term_yellow="$(tput setaf 3)"
2658   term_purple="$(tput setaf 5)"
2659   term_nocolor="$(tput sgr0)" # no font attributes
2660
2661   # unused so far. commented for shellcheck
2662   # term_underl="$(tput smul)"
2663   # term_blue="$(tput setaf 4)"
2664   # term_cyan="$(tput setaf 6)"
2665 fi
2666 # Try to keep environment pollution down, EPA loves us.
2667 unset safe_term match_lhs use_color
2668
2669 # * prompt
2670
2671
2672 if [[ $- == *i* ]]; then
2673
2674
2675   case $HOSTNAME in
2676     bk|je|li)
2677       if [[ $EUID == 1000 ]]; then
2678         system-status _ ||:
2679       fi
2680       ;;
2681   esac
2682
2683
2684   # this needs to come before next ps1 stuff
2685   # this stuff needs bash 4, feb 2009,
2686   # old enough to no longer condition on $BASH_VERSION anymore
2687   shopt -s autocd
2688   shopt -s dirspell
2689   PS1='\w'
2690   if [[ $- == *i* ]]  && [[ ! $LC_INSIDE_EMACS ]]; then
2691     PROMPT_DIRTRIM=2
2692     bind -m vi-command B:shell-backward-word
2693     bind -m vi-command W:shell-forward-word
2694   fi
2695
2696   if [[ $SSH_CLIENT || $SUDO_USER ]]; then
2697     unset PROMPT_DIRTRIM
2698     PS1="\h:$PS1"
2699   fi
2700
2701   # emacs terminal has problems if this runs slowly,
2702   # so I've thrown a bunch of things at the wall to speed it up.
2703   prompt-command() {
2704     local return=$? # this MUST COME FIRST
2705     local ps_char ps_color
2706     unset IFS
2707
2708     if [[ $HISTFILE ]]; then
2709       history -a # save history
2710     fi
2711
2712     case $return in
2713       0) ps_color="$term_purple"
2714          ps_char='\$'
2715          ;;
2716       *) ps_color="$term_green"
2717          ps_char="$return \\$"
2718          ;;
2719     esac
2720     if [[ ! -O . ]]; then # not owner
2721       if [[ -w . ]]; then # writable
2722         ps_color="$term_bold$term_red"
2723       else
2724         ps_color="$term_bold$term_green"
2725       fi
2726     fi
2727
2728     # faster than sourceing the file im guessing
2729     if [[ -e /dev/shm/iank-status && ! -e /tmp/quiet-status ]]; then
2730       eval $(< /dev/shm/iank-status)
2731     fi
2732     if [[ $MAIL_HOST && $MAIL_HOST != "$HOSTNAME" ]]; then
2733       ps_char="@ $ps_char"
2734     fi
2735     jobs_char=
2736     if [[ $(jobs -p) ]]; then
2737       jobs_char='j\j '
2738     fi
2739     # We could test if sudo is active with sudo -nv
2740     # but then we get an email and log of lots of failed sudo commands.
2741     # We could turn those off, but seems better not to.
2742     if [[ $EUID != 0 ]] && [[ $DID_SUDO ]]; then
2743       psudo="\[$term_bold$term_red\]s\[$term_nocolor\] "
2744     fi
2745     if [[ ! $HISTFILE ]]; then
2746       ps_char="NOHIST $ps_char"
2747     fi
2748     PS1="${PS1%"${PS1#*[wW]}"} $jobs_char$psudo\[$ps_color\]$ps_char\[$term_nocolor\] "
2749
2750     # set titlebar. instead, using more advanced
2751     # titelbar below
2752     #echo -ne "$_title_escape $HOSTNAME ${PWD/#$HOME/~}  \007"
2753   }
2754   PROMPT_COMMAND=prompt-command
2755
2756   if [[ $TERM == screen* ]]; then
2757     _title_escape="\033]..2;"
2758   else
2759     # somme sites recommend this, i dunno what the diff is.
2760     #_title_escape="\033]30;"
2761     _title_escape="\033]0;"
2762   fi
2763
2764   # make the titlebar be the last command and the current directory.
2765   settitle () {
2766
2767
2768     # These are some checks to help ensure we dont set the title at
2769     # times that the debug trap is running other than the case we
2770     # want. Some of them might not be needed.
2771     if (( ${#FUNCNAME[@]} != 1 || ${#BASH_ARGC[@]} != 2 || $BASH_SUBSHELL != 0 )); then
2772       return 0
2773     fi
2774     if [[ $1 == prompt-command ]]; then
2775       return 0
2776     fi
2777     echo -ne "$_title_escape ${PWD/#$HOME/~} "
2778     printf "%s" "$*"
2779     echo -ne "\007"
2780   }
2781
2782   # note, this wont work:
2783   # x=$(mktemp); cp a $x
2784   # I havnt figured out why, bigger fish to fry.
2785   #
2786   # for titlebar.
2787   # condition from the screen man page i think.
2788   # note: duplicated in tx()
2789   if [[ $TERM == *(screen*|xterm*|rxvt*) ]]; then
2790     trap 'settitle "$BASH_COMMAND"' DEBUG
2791   else
2792     trap DEBUG
2793   fi
2794
2795 fi
2796
2797 # * stuff that makes sense to be at the end
2798
2799
2800 # best practice
2801 unset IFS
2802
2803 # shellcheck disable=SC1090
2804 [[ -s "$HOME/.rvm/scripts/rvm" ]] && source "$HOME/.rvm/scripts/rvm" # Load RVM into a shell session *as a function*
2805
2806 # I had this idea to start a bash shell which would run an initial
2807 # command passed through this env variable, then continue on
2808 # interactively. But the use case I had in mind went away.
2809 #
2810 # if [[ $MY_INIT_CMD ]]; then
2811 #   "${MY_INIT_CMD[@]}"
2812 #   unset MY_INIT_CMD
2813 # fi
2814
2815 # ensure no bad programs appending to this file will have an affect
2816 return 0