File: ambush.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright (c) 2026 pacman64
   6 #
   7 # Permission is hereby granted, free of charge, to any person obtaining a copy
   8 # of this software and associated documentation files (the "Software"), to deal
   9 # in the Software without restriction, including without limitation the rights
  10 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  11 # copies of the Software, and to permit persons to whom the Software is
  12 # furnished to do so, subject to the following conditions:
  13 #
  14 # The above copyright notice and this permission notice shall be included in
  15 # all copies or substantial portions of the Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  20 # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23 # SOFTWARE.
  24 
  25 
  26 # ambush [extra options...] [kill options...] [--...] [fzf options...]
  27 #
  28 # Find and kill running processes which were currently running at the start of
  29 # this tool, picking via `fzf` live-picker. If any items are picked/confirmed,
  30 # these are given to the `kill` command.
  31 #
  32 # The extra options are, available both in single and double-dash versions
  33 #
  34 #   -h, -help    show this help message
  35 
  36 
  37 commando='kill'
  38 
  39 while [ $# -gt 0 ]; do
  40     if [ "$1" = "--" ]; then
  41         shift
  42         break
  43     fi
  44 
  45     case "$1" in
  46         -h|--h|-help|--help)
  47             awk '/^# +ambush /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  48             exit 0
  49         ;;
  50 
  51         -*)
  52             commando="${commando} $1"
  53             shift
  54             continue
  55         ;;
  56     esac
  57 
  58     break
  59 done
  60 
  61 data="$(ps aux)"
  62 res=$?
  63 if [ "${res}" -ne 0 ]; then
  64     exit "${res}"
  65 fi
  66 
  67 # msg="Pick Processes for command "${commando}" ..."
  68 msg='Pick Processes to kill: tab toggles, enter confirms, escape safe-quits'
  69 pick='fzf --reverse -m --header-first --header-lines=1'
  70 targets="$(echo "${data}" | ${pick} --header="${msg}")"
  71 res=$?
  72 if [ "${res}" -ne 0 ]; then
  73     exit "${res}"
  74 fi
  75 
  76 if [ -n "${targets}" ]; then
  77     echo "${targets}" \
  78     | awk -v ORS='\000' '/[^ ]/ { print ($2 + 0 != 0) ? $2 : $1 }' \
  79     | xargs -0 ${commando}
  80 fi