LOGIN (I)                    3/15/72                    LOGIN (I)

NAME            login  --  sign onto UNIX

SYNOPSIS        login  [ username [ password ] ]

DESCRIPTION     The login command is used when a user initially

                signs onto UNIX, or it may be used at any time to

                change from one user to another.  The latter case

                is the one summarized above and described here.

                See login (VII) for how to dial up initially.

                If login is invoked without an argument, it will

                ask for a user name, and, if appropriate, a pass-

                word.  Echoing is turned off (if possible) during

                the typing of the password, so it will not appear

                on the written record of the session.

                After a successful login, accounting files are

                updated and the user is informed of the existence

                of mailbox and message-of-the-day files.

                Login is recognized by the Shell and executed di-

                rectly (without forking).

FILES           /tmp/utmp       accounting

                /tmp/wtmp       accounting

                mailbox         mail

                /etc/motd       message-of-the-day

                /etc/passwd     password file

SEE ALSO        login(VII), init(VII), getty(VII), mail(I)

DIAGNOSTICS     "login incorrect", if the name or the password is

                bad.  "No Shell,", "cannot open password file,"

                "no directory:" consult a UNIX programming coun-


BUGS            --