http://www.perlmonks.org?node_id=952755


in reply to Pipe DD command?

Here's a good place to start with regard to imaging multiple cards at once: threads

As for viewing the progress via PV, my immediate thought would be to pipe PV's output to a temp file somewhere, and have your Perl script periodically read that temp file and display the progress on screen.

Let me know if you'd like to see some psuedocode or something!