X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=usr_bin%2Fgrml-exec-wrapper;h=cd51cae50d5135bc1987de93fa70c0f2c4f09703;hb=d03a386825bd12fb95cf4b87572038102a7ee514;hp=a826be1fdd9ece15151596e3121a0379bb216137;hpb=37bccb45ba7b9351a2fcc9f6c3a1f19f6b58ec99;p=grml-scripts.git

diff --git a/usr_bin/grml-exec-wrapper b/usr_bin/grml-exec-wrapper
index a826be1..cd51cae 100755
--- a/usr_bin/grml-exec-wrapper
+++ b/usr_bin/grml-exec-wrapper
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 # Filename:      grml-exec-wrapper
 # Purpose:       simple but smart program execution wrapper
 # Authors:       grml-team (grml.org), (c) Michael Prokop <mika@grml.org>
@@ -6,9 +6,26 @@
 # License:       This file is licensed under the GPL v2 or any later version.
 ################################################################################
 
+is_installed() {
+    prog="$1"
+    [ -z "$prog" ] && return 1
+
+    ret=1
+    oifs="$IFS"
+    IFS=:
+    for dir in $PATH; do
+        [ -z "$dir" ] && continue
+        [ -x "$dir/$prog" ] && ret=0 && break
+    done
+
+    IFS="$oifs"
+    unset oifs
+    return "$ret"
+}
+
 # use Xdisplay only if present and running under X:
 display_info() {
-if type -a Xdialog 1>/dev/null 2>&1 && test -n "$DISPLAY" ; then
+if is_installed Xdialog && test -n "$DISPLAY" ; then
     Xdialog --title "grml-exec-wrapper" --msgbox "$1" 0 0 0
 else
     print "$1">&2
@@ -28,8 +45,8 @@ case $PROG in
 	*sudo*) PROG="$2" ;;
 esac
 
-if type -a "$PROG" 1>/dev/null 2>&1 ; then
-    exec $@
+if is_installed "$PROG" ; then
+    exec "$@"
 else
     RC=1
     display_info "Sorry: ${PROG} not available.