From bd91e242c3044961d54611b0514f98cfe4959965 Mon Sep 17 00:00:00 2001
From: ewt <devnull@localhost>
Date: Mon, 13 Jan 1997 17:23:43 +0000
Subject: [PATCH] add mkj's usage message

CVS patchset: 1272
CVS date: 1997/01/13 17:23:43
---
 gendiff | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gendiff b/gendiff
index 0a0695f31..3287936f1 100644
--- a/gendiff
+++ b/gendiff
@@ -1,5 +1,11 @@
 #!/bin/bash
 
+[ -z "$1" -o -z "$2" ] && {
+# usage
+  echo "usage: $0 <directory> <diff-extension>" 1>&2
+  exit 1
+}
+
 find $1 \( -name "*$2" -o -name ".*$2" \) -print |
 while read f; do
 	diff -u $f ${f%%$2}