CPYSPLF with Duplicate jobs

I want to copy the QPJOBLOG spool file of a given job name (coming in as a
parameter) to a physical file in a CL program.

When there are duplicate jobs with the name, I want to copy for all of
those jobs.

I think it can be done by using WRKJOB with DUPJOBOPT(*MSG) and then using
RCVMSG to get all of the job numbers in a loop and doing the CPYSPLF.

I am not sure how exactly to do it, or whether there is another way to do
this.

Any help will be greatly appreciated.

Vinay