IRC is an open protocol that uses TCP and, optionally, TLS. An IRC server can connect to other IRC servers to expand the IRC network.
IRC stands for Internet Relay Chat.It is a part of application layer.It was designed as a worldwide forum for public and private discussions. An IRC network consists of a set of interconnected servers. Once users are connected to an IRC server, they can converse with other users connected to any server in the IRC network. IRC provides for group communication, via named channels, as well as personal communication through “private” messages.
To use IRC we need to install an IRC client.On linux, we can do it with:
sudo apt-get install irssi
This installs ircll client.You may install any other client if you wish so.
After installing, type in terminal: