When sorting latest backup directories make sure they follow the timestamp format

/opt/couchbase/bin/cbbackup http://localhost:8091 /vagrant/foo -v -u Administrator -p passwd >> /vagrant/foo/bar/cbbackup.log 2>&1

even though the logs say "mt sink : /vagrant/foo" the backup is created in foo/bar

ls -la /vagrant/foo/bar/

drwxr-xr-x 1 vagrant vagrant 136 Oct 9 13:20 2015-10-09T132018Z-full
rw-rr- 1 vagrant vagrant 2632 Oct 9 13:20 cbbackup.log
/opt/couchbase/bin/cbbackup http://localhost:8091 /vagrant/foo -v -u Administrator -p passwd | tee /vagrant/foo/baz/cbbackup.log

ls -la /vagrant/foo/baz/
2015-10-09T133223Z-full/ cbbackup.log