[App_rpt-users] Serial communication

I have a pk232 packet TNC and a computer with a serial port. I would like to be able to control the pk232 from my computer used for Allstar via a terminal for serial communication, and eventually might want to integrate the packet stuff with Allstar. Is there a simple centOS program to communicate with serial ( 1200 or 9600 baud, standard protocol etc.)? And yes, my computer has a serial port, not usb to serial. Thanks Skyler KDØWHB