command to add members to a PF?

[fkany@xxxxxxxxxxxxxxxxxx]

Is there a command that would help with the task below?

FILE_DEV is on the Development system and FILE_PROD is on the Production
system.

FILE_DEV has 108 members.

FILE_PROD has 84 members.

1) I need to add members to FILE_DEV with any members that exist in
FILE_PROD that don't exist in FILE_DEV.

2) I also need to delete any members that exist in FILE_DEV that don't
exist in FILE_PROD.

TIA,

Frank