From 328dfd27622bdf5d73a0748da8351e2ab21833fe Mon Sep 17 00:00:00 2001
From: Wolfram Schneider <wosch@indexdata.dk>
Date: Fri, 23 Apr 2010 12:57:43 +0000
Subject: [PATCH] run only one instance of this script at a time

implemented by a simple self-written lockfile. Do not use lockfile(1)
due a bug in debian packages, for details see:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=565613
---
 bin/irspy-update.sh |   12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/bin/irspy-update.sh b/bin/irspy-update.sh
index 90d5259..a29d167 100755
--- a/bin/irspy-update.sh
+++ b/bin/irspy-update.sh
@@ -8,6 +8,16 @@
 home=/usr/local/src/git
 cd $home/irspy/bin || exit 2
 logdir=../tmp
+lockfile=../tmp/irspy-update.lock
+
+if [ -f $lockfile ]; then
+    pid=`cat $lockfile`
+    if kill -0 $pid 2>/dev/null; then
+	echo "This script is already running with pid: $pid"
+	exit 1
+    fi
+fi
+echo $$ > $lockfile || exit 2
 
 for i in 0 1 2 3 4 5 6
 do
@@ -16,3 +26,5 @@ do
    gzip -f $logfile
 done
 
+rm -f $lockfile
+
-- 
1.7.10.4