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...]
  27 #
  28 # Find and kill running processes which were currently running at the start
  29 # of this tool, picking interactively using `fzf`. All processes picked are
  30 # given to the `kill` command.
  31 #
  32 # It's always possible to cancel, and avoid killing any process.
  33 #
  34 # The extra options are, available both in single and double-dash versions
  35 #
  36 #   -h, -help    show this help message
  37 
  38 
  39 commando='kill'
  40 
  41 while [ $# -gt 0 ]; do
  42     case "$1" in
  43         -h|--h|-help|--help)
  44             awk '/^# +ambush /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  45             exit 0
  46         ;;
  47 
  48         --) break ;;
  49 
  50         -*)
  51             commando="${commando} $1"
  52             shift
  53             continue
  54         ;;
  55     esac
  56 
  57     break
  58 done
  59 
  60 data="$(ps aux)"
  61 res=$?
  62 if [ "${res}" -ne 0 ]; then
  63     exit "${res}"
  64 fi
  65 
  66 # msg="Pick Processes for command "${commando}" ..."
  67 msg='Pick Processes to kill: tab toggles, enter confirms, escape safe-quits'
  68 keys='ctrl-a:select-all,ctrl-space:toggle,F10:abort,F12:abort'
  69 picker_options="--reverse -m --header-first --header-lines=1 --bind ${keys}"
  70 
  71 targets="$(echo "${data}" | fzf ${picker_options} --header="${msg}")"
  72 res=$?
  73 if [ "${res}" -ne 0 ]; then
  74     exit "${res}"
  75 fi
  76 
  77 pick_pids='/[^ ]/ { print ($2 + 0 != 0) ? $2 : $1 }'
  78 if [ -n "${targets}" ]; then
  79     echo "${targets}" | awk "${pick_pids}" | xargs ${commando}
  80 fi