From: Michael Prokop <mika@grml.org>
Date: Fri, 27 Jul 2012 12:43:07 +0000 (+0200)
Subject: Display usage information if any unknown cmdline option is used
X-Git-Tag: v0.19.6~4
X-Git-Url: https://git.grml.org/?p=grml-live.git;a=commitdiff_plain;h=1584694068d5f4a9ae8aa842721e4ad322135183

Display usage information if any unknown cmdline option is used

This is more user friendly than just displaying an error message
---

diff --git a/grml-live b/grml-live
index 45b93e6..3964cbd 100755
--- a/grml-live
+++ b/grml-live
@@ -333,7 +333,7 @@ while getopts "a:C:c:d:D:e:g:i:I:o:r:s:t:U:v:AbBFhnNqQuVz" opt; do
     U) CHOWN_USER="$OPTARG" ;;
     V) VERBOSE="-v" ;;
     z) SQUASHFS_ZLIB=1 ;;
-    ?) echo "invalid option -$OPTARG" >&2; bailout 1 ;;
+    ?) echo "invalid option -$OPTARG" >&2; usage; bailout 1 ;;
   esac
 done
 shift $(($OPTIND - 1))  # set ARGV to the first not parsed commandline parameter