X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=usr_bin%2Fgrml-exec-wrapper;h=5466d024e0a625c54b13961b3a48296334aafa12;hb=dcb6090b9e23b455fb7b043c340508e3373e6a40;hp=a826be1fdd9ece15151596e3121a0379bb216137;hpb=37bccb45ba7b9351a2fcc9f6c3a1f19f6b58ec99;p=grml-scripts-core.git

diff --git a/usr_bin/grml-exec-wrapper b/usr_bin/grml-exec-wrapper
index a826be1..5466d02 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
@@ -20,7 +37,6 @@ if [ -z "$1" ] ; then
     exit 1
 fi
 
-RC='0'
 PROG="$1"
 
 # make sure to support 'grml-exec-wrapper sudo wireshark' as well:
@@ -28,11 +44,11 @@ case $PROG in
 	*sudo*) PROG="$2" ;;
 esac
 
-if type -a "$PROG" 1>/dev/null 2>&1 ; then
-    exec $@
-else
-    RC=1
-    display_info "Sorry: ${PROG} not available.
+if is_installed "$PROG" ; then
+    exec "$@"
+fi
+
+display_info "Sorry: ${PROG} not available.
 
 Looks like the grml flavour you are using does not ship ${PROG}. :(
 
@@ -40,8 +56,7 @@ You can search for ${PROG} executing:
 
 apt-get update && apt-cache search ${PROG}
     "
-fi
 
-exit $RC
+exit 1
 
 ## END OF FILE #################################################################