Add and use showhelp function.

1 files changed, 15 insertions, 5 deletions

diff --git a/localcowbuilder-create b/localcowbuilder-create
index 90f9d89..896447f 100755
--- a/localcowbuilder-create
+++ b/localcowbuilder-create
@@ -1,11 +1,21 @@
 #!/bin/sh
 
+set -e
+
+PRG=$(basename "$0")
+
+function showhelp() {
+	cat <<EOF
+Usage:   $PRG POOL [ DISTRIBUTION [ OTHERMIRROR] ]
+
+Examples:
+    $PRG sarge
+    $PRG sarge+hacks sarge 'deb http://example.com/ sarge hacks'
+EOF
+}
+
 if [ $# -eq 0 ]; then
-	echo "Usage:   $(basename $0) POOL [ DISTRIBUTION [ OTHERMIRROR] ]"
-	echo ""
-	echo "Examples:"
-	echo "    $(basename $0) sarge"
-	echo "    $(basename $0) sarge+hacks sarge 'deb http://example.com/ sarge hacks'"
+	showhelp
 	exit 1
 fi