Interface 1: A new CLI pbs_ralter.
Start time modifier: '-R' <start_time>
Specifies reservation's new start time.
This option can be used only when the reservation is not running or is empty i.e. no jobs are submitted to the reservation.
If the change is allowed, reservation will start at the new time specified with this option to pbs_ralter.
The specifications of providing the time are same as pbs_rsub.
End time modifier: '-E' <end_time>
Specifies reservation's new end time.
This option can be used even when the reservation is running and has jobs that are submitted to the reservation.
If the change is allowed, reservation will end at the new time specified with this option to pbs_ralter.
The specifications of providing the time are same as pbs_rsub.
Interactive option: '-I' <+block_time>.
Specifies interactive mode.
The pbs_ralter command will block, up to <block_time> seconds, while waiting for the reservation's change request to be confirmed or denied.
<block_time> should be positive.
If the change is allowed, the pbs_ralter returns with the status “CONFIRMED”, otherwise it returns with the status “UNCONFIRMED”.
Format: Integer.
Default: Not interactive.
-m <mail_points>
Works same as pbs_rsub.
-N reservation_name
Works same as pbs_rsub.
-M mail_list
Works same as pbs_rsub.
Interface 2: