set default_realname [<text>]
If set, the client will use the value of this variable as its IRCNAME when connecting to new servers. The variable may be set to anything desired, including nothing. If unset, the client will use the value in the environment variable IRCNAME, or failing that, the value in the user's GCOS field in the system password file.
Traditionally, the client has provided the realname command and this setting, but the realname command is obsolete and should not be used.
The nature of irc servers is such that this information cannot be changed on the fly. The client must establish a connection with a new server (or reconnect to the current one) for the setting to take effect.
This first appeared in EPIC5-0.3.5. Prior to this, it was called set realname.