Support -p option in grml-exec-wrapper

[grml-scripts.git] / usr_bin / grml-exec-wrapper

diff --git a/usr_bin/grml-exec-wrapper b/usr_bin/grml-exec-wrapper
index f20ffd4..6973b70 100755 (executable)
--- a/usr_bin/grml-exec-wrapper
+++ b/usr_bin/grml-exec-wrapper
@@ -6,30 +6,19 @@
 # License:       This file is licensed under the GPL v2 or any later version.
 ################################################################################
 
-# use Xdisplay only if present and running under X:
-display_info() {
-if type -a Xdialog 1>/dev/null 2>&1 && test -n "$DISPLAY" ; then
-    Xdialog --title "grml-exec-wrapper" --msgbox "$1" 0 0 0
-else
-    print "$1">&2
-fi
-}
-
-if [ -z "$1" ] ; then
-    display_info "Usage: $0 <program> [<arguments>]"
-    exit 1
-fi
+usage() {
+  printf "Usage: $0 <program> [<arguments>]
 
-RC='0'
-PROG="$1"
+Available options:
 
-# make sure to support 'grml-exec-wrapper sudo wireshark' as well:
-case $PROG in
-       *sudo*) PROG="$2" ;;
-esac
+  -h | --help   display this usage information
+  -p <program>  check specified argument instead of default args, like:
+               $(basename $0) -p aumix xterm -T aumix -e aumix
+"
+}
 
 is_installed() {
-    prog="$1"
+    prog="$(basename $1)"
     [ -z "$prog" ] && return 1
 
     ret=1
@@ -45,20 +34,49 @@ is_installed() {
     return "$ret"
 }
 
-if is_installed "$PROG" 1>/dev/null 2>&1 ; then
-    exec $@
+# use Xdisplay only if present and running under X:
+display_info() {
+if is_installed xterm && test -n "$DISPLAY" ; then
+    xterm -T 'Sorry :(' -e "dialog --msgbox \"$1\" 0 0"
 else
-    RC=1
-    display_info "Sorry: ${PROG} not available.
+    printf '%s\n' "$1">&2
+fi
+}
+
+if [ -z "$1" -o "$1" = '-h' -o "$1" = '--help' ] ; then
+    usage
+    exit 1
+fi
+
+if [ "$1" = '-p' ] ; then
+    if [ -z "$2" ] ; then
+         usage
+        exit 1
+    else
+         PROG="$2"
+        shift ; shift
+    fi
+else
+    PROG="$1"
+    # make sure to support 'grml-exec-wrapper sudo wireshark' as well:
+    case $PROG in
+      *sudo*) PROG="$2" ;;
+    esac
+fi
+
+if is_installed "$PROG" ; then
+    exec "$@"
+fi
+
+display_info "Sorry: ${PROG} not available.
 
 Looks like the grml flavour you are using does not ship ${PROG}. :(
 
 You can search for ${PROG} executing:
 
-apt-get update && apt-cache search ${PROG}
+apt-get update && apt-cache search $(basename ${PROG})
     "
-fi
 
-exit $RC
+exit 1
 
 ## END OF FILE #################################################################