PVR switch syntax - help please

[Alastair]

Please could somebody point me to any info/instructions/examples on using PVR 
command.

I am running on openSUSE 12.1 and happy to work with console command line but 
am struggling with syntax for pvr.

For example if I wish to download "In Our Time" podcast each week how should I proceed?

Do I need to set up a cron job or can --pvr-scheduler do it all within get_iplayer.
All guidance gratefully received.
Regards,
Budge