File: nss.sh
   1 #!/bin/sh
   2 
   3 # The MIT License (MIT)
   4 #
   5 # Copyright © 2020-2025 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 # nss [options...] [unit...]
  27 #
  28 # Nice Systemctl Status shows `systemctl status` using ANSI styles to make
  29 # things easier to scan/read.
  30 #
  31 # A colorblind-friendly blue is used instead of green if the environment
  32 # variable COLORBLIND is declared and set to 1.
  33 #
  34 # The only options are those for `systemctl status`, as well as any of `-h`,
  35 # `--h`, `-help`, or `--help`, to show this help message.
  36 
  37 
  38 case "$1" in
  39     -h|--h|-help|--help)
  40         {
  41             awk '/^# +nss /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
  42             systemctl --help
  43         } | less -MKiCRS
  44         exit 0
  45     ;;
  46 esac
  47 
  48 if [ $# -eq 0 ]; then
  49     # avoid having/showing other commands running, when they're not needed
  50     local res
  51     res="$(systemctl status "$@" 2>&1)"
  52     echo "${res}" | less -MKiCRS
  53     return $?
  54 fi
  55 
  56 systemctl status "$@" 2>&1 | sed -E \
  57     -e 's-\x1b\[[^A-Za-z][A-Za-z]--g' \
  58     -e 's-(^[^ ] )([^ ]+\.service)-\1\x1b[7m\2\x1b[0m-' \
  59     -e 's- (enabled)- \x1b[38;2;0;135;95m\x1b[7m\1\x1b[0m-g' \
  60     -e 's- (disabled)- \x1b[38;2;215;95;0m\x1b[7m\1\x1b[0m-g' \
  61     -e 's- (active \(running\))- \x1b[38;2;0;135;95m\x1b[7m\1\x1b[0m-g' \
  62     -e 's- (inactive \(dead\))- \x1b[38;2;204;0;0m\x1b[7m\1\x1b[0m-g' \
  63     -e 's-^(Unit .* could not .*)$-\x1b[38;2;204;0;0m\x1b[7m\1\x1b[0m\n-' \
  64     -e 's-(\[WARN\].*)$-\x1b[38;2;215;95;0m\x1b[7m\1\x1b[0m\n-' \
  65     -e 's-(\[ERR\].*)$-\x1b[38;2;204;0;0m\x1b[7m\1\x1b[0m\n-' |
  66 if [ "${COLORBLIND}" = 1 ]; then
  67     # color-blind-friendly version using blue instead of green
  68     sed 's-\x1b\[38;2;0;135;95m-\x1b[38;2;0;95;215m-g'
  69 else
  70     # leave green colors untouched
  71     cat
  72 fi | less -MKiCRS