Adding live-system script from live-tools.

[live-boot-grml.git] / bin / live-system

diff --git a/bin/live-system b/bin/live-system
new file mode 100755 (executable)
index 0000000..026ab64
--- /dev/null
+++ b/bin/live-system
@@ -0,0 +1,49 @@
+#!/bin/sh
+
+# Redirect stdout to stderr
+exec 1>&2
+
+case "${1}" in
+       -h|--help|-u|--usage)
+               echo "live-system - determine if running system is a live system"
+               echo
+               echo "Usage: ${0} [-v|--verbose]"
+
+               exit 2
+               ;;
+
+       -v|--verbose)
+               _VERBOSE="true"
+               ;;
+esac
+
+[ "${_VERBOSE}" ] && echo -n "Checking for live-system... "
+
+if [ ! -e /proc/cmdline ]
+then
+       echo "E: /proc/cmdline - No such file."
+       exit 2
+fi
+
+if grep -qs boot=live /proc/cmdline
+then
+       [ "${_VERBOSE}" ] && echo -n " yes, this is a live system"
+
+       if [ -d /live/image/install ]
+       then
+               if ls /live/image/install/pool/main/l/live-installer/live-installer_*.udeb > /dev/null 2>&1
+               then
+                       [ "${_VERBOSE}" ] && echo " with live-installer support."
+               else
+                       [ "${_VERBOSE}" ] && echo " without live-installer support."
+               fi
+       else
+               [ "${_VERBOSE}" ] && echo "without installer support."
+       fi
+
+       exit 0
+else
+       [ "${_VERBOSE}" ] && echo " no, this is not a live system."
+
+       exit 1
+fi