Xchat is a software which provides a Internet Relate Chat. Using Xchat, you can join any channel that are available. For example , there is a #octave channel , where octave related problems are discuss. Basically these channels are for providing solution to any problem. To join channel, you need a IRC (Xchat).
$sudo apt-get install xchat
search xchat and open it.
After connected , Window for new channel appears, you can add channel in this. For example: #octave. Click ok.