Start the IRC client with an optional server, nick and config location. Passing a password on the command line exposes it in the process list.
connectportnicknoconnectconfighomestring--connect-cinteger--port-pstring--nick-nstring--password-wstring--hostname-hboolean--noconnect-!path--configpath--homemanmanualirssi.1 June 2015Before it fills your prompt, Otty checks the installed irssi against its version. A form that does not match your version is not offered.