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A channel is a named group of one or more clients which will all receive messages addressed to that channel. – J. Oikarinen, D. Reed; Internet Relay Chat Protocol; RFC 1459; May 1993. |
An IRC channel is a text-based, virtual meeting room, generically called chat rooms”. Each channel is a virtual space where anybody connected to the Internet and IRC can join by entering and talking to the other people already there.
You can leave a channel at any time, join another channel, and rejoin channels whenever you wish. Many IRC applications will let you join more than one channel at the same time.
See the sections on finding channels, creating channels, and the list command for more information.