mdw@git.distorted.org.uk Git - disorder-toys/blob - disorder-switch-config

   1 #! /bin/sh -e
   2
   3 prog=${0##*/}
   4 fail () { echo >&2 "$prog: $1"; exit 2; }
   5 usage () { echo "usage: $prog [CONF]"; }
   6
   7 bogus=nil
   8 while getopts "h" opt; do
   9   case $opt in
  10     h) usage; exit 0 ;;
  11     *) bogus=t ;;
  12   esac
  13 done
  14 shift $(( $OPTIND - 1 ))
  15 case $# in 0) op=query ;; 1) op=set conf=$1 ;; *) bogus=t ;; esac
  16 case $bogus in t) usage >&2; exit 2 ;; esac
  17
  18 cd "$HOME/.disorder"
  19 case $op in
  20   query)
  21     if ! [ -L passwd ]; then link=bogus
  22     else link=$(readlink passwd)
  23     fi
  24     case $link in
  25       passwd.*) conf=${link#passwd.} ;;
  26       *) fail "\`~/.disorder/passwd' not a link to \`passwd.CONF'" ;;
  27     esac
  28     echo "$conf"
  29     ;;
  30   set)
  31     if ! [ -f "passwd.$conf" ]; then fail "no config \`passwd.$conf'"; fi
  32     ln -sf "passwd.$conf" passwd
  33     ;;
  34 esac