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LOGIN(1)                    General Commands Manual                   LOGIN(1)



NAME
       login  -  sign on

SYNOPSIS
       login [ username ]

DESCRIPTION
       The  login command is used when a user initially signs on, 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 `How to Get
       Started' for how to dial up initially.

       If login is invoked without an argument, it asks for a user name,  and,
       if appropriate, a password.  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 .mail and message-of-the-day files.  Login
       initializes the user and group IDs and the working directory, then exe-
       cutes a command interpreter (usually sh(1)) according to specifications
       found  in  a  password  file.  Argument 0 of the command interpreter is
       `-sh.

       Login is recognized by sh(1) and executed directly (without forking).

FILES
       /etc/utmp      accounting
       /usr/adm/wtmp  accounting
       /usr/mail/*    mail
       /etc/motd      message-of-the-day
       /etc/passwd    password file

SEE ALSO
       init(8), newgrp(1), getty(8), mail(1), passwd(1), passwd(5)

DIAGNOSTICS
       `Login incorrect,' if the name or the password is bad.
       `No Shell', `cannot open password file', `no directory': consult a pro-
       gramming counselor.



                                                                      LOGIN(1)