From b3761600fa03d9c23ce5e949b1d4de14634a2dea Mon Sep 17 00:00:00 2001
From: Christoph <ckubu@oopen.de>
Date: Wed, 28 Jun 2017 01:15:07 +0200
Subject: [PATCH] Add clean_up function. Trap signals SIGHUP SIGINT SIGTERM

---
 check_vpn.sh | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/check_vpn.sh b/check_vpn.sh
index cad2980..c06e203 100755
--- a/check_vpn.sh
+++ b/check_vpn.sh
@@ -27,14 +27,20 @@ LOCK_DIR=`mktemp -d`
 #-----------------------------
 #---------------------------------------
 
+clean_up() {
+
+   # Perform program exit housekeeping
+   rm rf $LOCK_DIR
+   exit $1
+}
+
 fatal(){
    echo ""
    echo -e "   [ Fatal ] $*"
    echo ""
    echo -e "\tScript terminated.."
    echo ""
-   rm -rf $LOCK_DIR
-   exit 1
+   clean_up 1
 }
 
 error (){
@@ -68,6 +74,10 @@ trim() {
     echo -n "$var"
 }
 
+# - The trap command allows you to execute a command when a signal 
+# - is received by your script. 
+# -
+trap clean_up SIGHUP SIGINT SIGTERM
 
 #---------------------------------------
 #-----------------------------