# sic > Simple IRC client. > Part of the suckless tools. > More information: <https://tools.suckless.org/sic/>. - Connect to the default host (irc.ofct.net) with the nickname set in the `$USER` environment variable: `sic` - Connect to a given host, using a given nickname: `sic -h {{host}} -n {{nickname}}` - Connect to a given host, using a given nickname and password: `sic -h {{host}} -n {{nickname}} -k {{password}}` - Join a channel: `:j #{{channel}}<Enter>` - Send a message to a channel or user: `:m #{{channel|user}}<Enter>` - Set default channel or user: `:s #{{channel|user}}<Enter>`