Change Mastership many file/directory which have same branch type

Transfers mastership of all objects in a directory which have same branch type "branch_dev" to replica "vietnam"
/vobs/myvob/sydney/
list1.c
list2.c
list3.c
.....

For the file/directory which was made branch (have got the branch "branch_dev" in history)

cd /vobs/myvob/sydney
cleartool find . -type f -branch "brtype(branch_dev)" -exec 'multitool chmaster vietnam $CLEARCASE_XPN'

For whole branch "branch_dev"

cd /vobs/myvob/sydney
multitool chmaster vietnam brtype:branch_dev@/vobs/myvob

Pull all mastership from replica australia to vietnam. Don't use replica australia anymore.

cd /vobs/myvob/sydney
multitool chmaster -all -obsolete_replica australia replica:vietnam