La page de man de irssi.

Premier lancement d'irssi :

$ irssi
 Irssi v0.8.21 - http://www.irssi.org                                                                                                         
13:39 -!-  ___           _
13:39 -!- |_ _|_ _ _____(_)
13:39 -!-  | || '_(_-<_-< |
13:39 -!- |___|_| /__/__/_|
13:39 -!- Irssi v0.8.21 - http://www.irssi.org
13:39 -!- - - - - - - - - - - - - - - - - - - - - - - - - - - - -
13:39 -!- Hi there! If this is your first time using Irssi, you
13:39 -!- might want to go to our website and read the startup
13:39 -!- documentation to get you going.
13:39 -!- 
13:39 -!- Our community and staff are available to assist you or
13:39 -!- to answer any questions you may have.
13:39 -!- 
13:39 -!- Use the /HELP command to get detailed information about
13:39 -!- the available commands.
13:39 -!- - - - - - - - - - - - - - - - - - - - - - - - - - - - -

On peut faire la configuration directement depuis irssi. Ici, un exemple pour se connecter au gateway IRC de Slack :

/network add -nick <nickname> slack
   13:53 -!- Irssi: Network slack saved
/server add -auto -ssl -network slack <account>.irc.slack.com 6667 <password>
   14:05 -!- Irssi: Server membrecalibanbelgique.irc.slack.com saved
/save
   14:05 -!- Irssi: Saved configuration to file /home/simon/.irssi/config

On quitte :

/quit

Et on relance irssi :

$ irssi

• robgolding.com (using slack with irssi)