ircII help: who
Usage: WHO [-switch [<arg>]] [<wildcard expression>] Gives a listing of the users on irc. If no flags are specified, the wildcard expression you supply will match any field returned by WHO. However, if the wildcard expression is "*" (an asterisk), the users on the current channel are shown. Note that WHO * will fail if you are not on a channel. If the expression is 0, all users on irc are shown. The following switches are also recognized and used to limit the listing: -OPERATORS - lists only operators -LUSERS - lists only non operators -CHOPS - lists only channel operators -NAME <username> - lists only people with matching user-ids -FILE <filename> - lists only people listed in the file -HOST - Lists users from the specified host. -SERVER - Lists users from the specified server. -HERE - Lists only those marked as here. -AWAY - Lists only those marked away. -NICK - Match only the given nickname The switches may be abbreviated unambiguously. All matching of usernames, hostnames, and servernames may contain wildcards (*). Wildcards in the form "*.edu" are also correctly recognized by the IRC server (so there's no need for ircII to do that).