Useful logging addition?

[apmuthu]

https://github.com/alawar/pvetools/commit/e52f20b5b41288a68506f1c048c77e1b2329f78a
File: bin/pve_backup_ct

-        vzctl exec $i "echo 1 > /var/log/pve-backup.log"
+        vzctl exec `basename $i` "echo 1 > /var/log/pve-backup.log"