This is the standard Linux IR control system, supporting many IR transceivers including RedRat devices. It is mainly aimed for control of your Linux computer via an IR remote handset, though can be used to output IR signals as well.

Version details and further instructions are given here.

We have developed a couple of applications that build on aspects of LIRC, but giving more basic and direct control of the RedRat3 and RedRat3-II:

• irinput: Inputs IR signals via either the wideband, learning IR receiver or the long range remote control receiver.
• iroutput: Outputs IR signals.

More information and code available here.