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
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-
cilor.
BUGS --
OWNER dmr, ken