reorganize script's functions

vmbackup.sh

@@ -2,6 +2,7 @@
 
 set -e
 set -u
+set -o pipefail
 
 statusfile=/var/run/zabbix/vmbackup.status
 basedir=/mnt/backups/vms
@@ -17,6 +18,17 @@ _mail () {
 	echo "$@" | mail -s "$(hostname -f) : vm backup error" root
 }
 
+function checkRunning {
+	local machine=$1
+	$vbm list runningvms | grep -q $machine
+	return $?
+}
+
+function _shutdown_vm {
+  net rpc shutdown -I 192.168.69.250 -U tom%123Soleil2022!
+  sleep 30
+}
+
 mount /mnt/backups &> /dev/null || _exit "mount failed" 2
 
 if [ ! -d $basedir ] ; then
@@ -32,17 +44,6 @@ if [ $# -ne 1 ] ; then
 	_exit "Usage" 42
 fi
 
-function checkRunning {
-	local machine=$1
-	$vbm list runningvms | grep -q $machine
-	return $?
-}
-
-function _shutdown_vm {
-  net rpc shutdown -I 192.168.69.250 -U tom%123Soleil2022!
-  sleep 30
-}
-
 machine=$1
 if ( checkRunning $machine ) ; then
 	mkdir -p ${outputdir}