From 3de5101a6a0f9fac2b421ae66923cbc389d8f771 Mon Sep 17 00:00:00 2001
From: Alexander Schmidt <alex@treefish.org>
Date: Tue, 10 Jun 2014 16:53:41 +0200
Subject: [PATCH] Exit if another instance is already running

---
 backmeupscotty | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/backmeupscotty b/backmeupscotty
index d1500c1..0af4cd5 100644
--- a/backmeupscotty
+++ b/backmeupscotty
@@ -5,6 +5,11 @@ REMOTE_BASE=/tmp/backmeupscotty
 ARCHIVE_KEEPNBACKUPS=30
 ARCHIVE_KEEPNDAYS=30
 
+if [ $(pidof -x $(basename $0) | wc -w) -gt 2 ]; then 
+    echo BACKMEUPSCOTTY: Another instance of $(basename $0) is already running! >&2
+    exit 1
+fi
+
 while getopts ":q" opt; do
     case $opt in
 	q)
-- 
2.39.5