Logging data from a usb or serial port

[Gregory P. Ennis]

Dear List,

This is not a fedora problem, so forgive me if this is the wrong list.

I am using a fedora os and need to set up a perl script to monitor and
log data coming through either a serial or usb port.

I will need to make judgments on the data which should not be a problem,
but I have not figured out how to capture the data.  If any of you can
point me in the right direction I would appreciate it.

Thanks,
-- 
Greg Ennis