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32 .\" @(#)login.1 8.1 (Berkeley) 6/9/93
39 .Nd log into the computer
47 this manual page describes the original login program for
48 NetBSD. Everything in here might not be true.
52 utility logs users (and pseudo-users) into the computer system.
54 If no user is specified, or if a user is specified and authentication
57 prompts for a user name.
58 Authentication of users is done via passwords.
60 The options are as follows:
65 option is used when a user name is specified to indicate that proper
66 authentication has already been done and that no password need be
68 This option may only be used by the super-user or when an already
69 logged in user is logging in as themselves.
73 option specifies the host from which the connection was received.
74 It is used by various daemons such as
76 This option may only be used by the super-user.
80 discards any previous environment.
83 option disables this behavior.
90 dislays its contents to the user and exits.
93 to prevent users from logging in when the system is about to go down.
99 changes the protection and ownership of certain devices specified in this
102 Immediately after logging a user in,
104 displays the system copyright notice, the date and time the user last
105 logged in, the message of the day as well as other information.
108 exists in the user's home directory, all of these messages are suppressed.
109 This is to simplify logins for non-human users, such as
112 then records an entry in the
116 files and executes the user's command interpretor.
118 Login enters information into the environment (see
120 specifying the user's home directory (HOME), command interpreter (SHELL),
121 search path (PATH), terminal type (TERM) and user name (both LOGNAME and
128 do not fork before executing the
132 .Bl -tag -width /var/mail/userXXX -compact
134 changes device protections
142 login account records
143 .It Pa /var/mail/user