Update pibackup.sh

pibackup.sh

@@ -7,6 +7,7 @@ source /opt/idssys/pibackup/settings.inc
 BackupDir="${MountPoint}/${hostname}"
 logfile=/opt/idssys/pibackup/logfile
 
+if [ "$1" != "update" ]; then
 	echo
 	echo '-----------------------------------------------------------------------'
 	date
@@ -39,6 +40,7 @@ for i in $allfiles; do keep=0;
 		done;
 		if [ $keep == 0 ]; then rm -rf ${BackupDir}/$i; fi;
 	done
+fi
 
 exit 0