irssi/docs/help/in/knock.in

%9Syntax:%9

@SYNTAX:knock@

%9Parameters:%9

    The channel you wish to get invited to.

%9Description:%9

    Sends an invitation request to the channel operators of the target channel;
    this command may not work on all IRC servers.
    
    The following conditions must be met:

        * You are not banned from the channel.
        * The channel is not private.
        * You may not be already in the channel.
        * The channel must be invite only, have a key or has exceeded its user
          limit.

%9Examples:%9

    /KNOCK #irssi
    /KNOCK #freenode
    /KNOCK #github

%9See also:%9 INVITE, JOIN