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Finger is a program that returns information about a registered user on a computer. Typing "finger" alone will show the users logged into the system you are using. "finger @host.domain.foo" may show you who's currently using some other computer. Certain computers have variations on finger support, where "finger ron" will show info on ron at your site, and "finger [email protected]" will show you all the Rons with accounts on a certain computer at MIT. Note that some finger programs don't take arguments, some will accept only a userid (the exact login name of a user,) and still others will search using a first or last name. If your system has manual pages installed, type "man finger" for more information. If your system has Internet access but not finger, there are several freely distributable versions, including GNU finger and BSD finger.