bin/live-system

   1 #!/bin/sh
   2
   3 # Redirect stdout to stderr
   4 exec 1>&2
   5
   6 case "${1}" in
   7         -h|--help|-u|--usage)
   8                 echo "live-system - determine if running system is a live system"
   9                 echo
  10                 echo "Usage: ${0} [-v|--verbose]"
  11
  12                 exit 2
  13                 ;;
  14
  15         -v|--verbose)
  16                 _VERBOSE="true"
  17                 ;;
  18 esac
  19
  20 [ "${_VERBOSE}" ] && echo -n "Checking for live-system... "
  21
  22 if [ ! -e /proc/cmdline ]
  23 then
  24         echo "E: /proc/cmdline - No such file."
  25         exit 2
  26 fi
  27
  28 if grep -qs boot=live /proc/cmdline
  29 then
  30         [ "${_VERBOSE}" ] && echo -n " yes, this is a live system"
  31
  32         if [ -d /live/image/install ]
  33         then
  34                 if ls /live/image/install/pool/main/l/live-installer/live-installer_*.udeb > /dev/null 2>&1
  35                 then
  36                         [ "${_VERBOSE}" ] && echo " with live-installer support."
  37                 else
  38                         [ "${_VERBOSE}" ] && echo " without live-installer support."
  39                 fi
  40         else
  41                 [ "${_VERBOSE}" ] && echo "without installer support."
  42         fi
  43
  44         exit 0
  45 else
  46         [ "${_VERBOSE}" ] && echo " no, this is not a live system."
  47
  48         exit 1
  49 fi