take a snapshot before upgrading
-rw-r--r-- 1316 LICENSE
-rw-r--r-- 2874 jail-update.conf
-rwxr-xr-x 1641 jail_update.sh
-rwxr-xr-x 1161 portupgrade.sh
-rwxr-xr-x 1115 selfBackup.sh
-rwxr-xr-x 978 update_stage0.sh
-rwxr-xr-x 506 update_stage1.sh
-rwxr-xr-x 1230 update_stagep.sh