From c052029267ba4988e50bd45a85a27dd5f1fb01de Mon Sep 17 00:00:00 2001
From: Philipp Hagemeister <phihag@phihag.de>
Date: Tue, 25 Jun 2013 19:04:30 +0200
Subject: [PATCH] Add an error message if number of arguments is incorrect

---
 update_latest.sh | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/update_latest.sh b/update_latest.sh
index 66a3e9999..2b1c597ec 100755
--- a/update_latest.sh
+++ b/update_latest.sh
@@ -3,6 +3,11 @@ set -e
 
 version="$1"
 
+if [ -z "$version" ]; then
+	echo "Usage: $0 version"
+	exit 1
+fi
+
 ln -sf ../downloads/$version latest/directory
 for f in $(ls "downloads/$version/"); do \
     ln -sf "../downloads/$version/$f" latest/$(echo $f | sed -e "s@-$version@@")