NetBSD/usr.bin/last/last.1

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.\" $NetBSD: last.1,v 1.9 2002/09/30 11:09:04 grant Exp $
.\"
.\" Copyright (c) 1980, 1990, 1993
.\" The Regents of the University of California. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
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.\" notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in the
.\" documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\" must display the following acknowledgement:
.\" This product includes software developed by the University of
.\" California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\" may be used to endorse or promote products derived from this software
.\" without specific prior written permission.
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.\" @(#)last.1 8.1 (Berkeley) 6/6/93
.\"
.Dd June 6, 1993
.Dt LAST 1
.Os
.Sh NAME
.Nm last
.Nd indicate last logins of users and ttys
.Sh SYNOPSIS
.Nm
.Op Fl Ns Ar n
.Op Fl T
.Op Fl f Ar file
.Op Fl h Ar host
.Op Fl t Ar tty
.Op user ...
.Sh DESCRIPTION
.Nm
will list the sessions of specified
.Ar users ,
.Ar ttys ,
and
.Ar hosts ,
in reverse time order.
Each line of output contains
the user name, the tty from which the session was conducted, any
hostname, the start and stop times for the session, and the duration
of the session.
If the session is still continuing or was cut short by
a crash or shutdown,
.Nm
will so indicate.
.Pp
.Bl -tag -width indent-two
.It Fl f Ar file
.Nm
reads the file
.Ar file
instead of the default,
.Pa /var/log/wtmp .
.It Fl Ar n
Limits the report to
.Ar n
lines.
.It Fl t Ar tty
Specify the
.Ar tty .
Tty names may be given fully or abbreviated, for example,
.Dq Li "last -t 03"
is
equivalent to
.Dq Li "last -t tty03" .
.It Fl h Ar host
.Ar Host
names may be names or internet numbers.
.It Fl T
Display better time information, including the year and seconds.
.El
.Pp
If
multiple arguments are given, the information which applies to any of the
arguments is printed, e.g.,
.Dq Li "last root -t console"
would list all of
.Dq Li root Ns 's
sessions as well as all sessions on the console terminal.
If no users, hostnames or terminals are specified,
.Nm
prints a record of
all logins and logouts.
.Pp
The pseudo-user
.Ar reboot
logs in at reboots of the system, thus
.Dq Li last reboot
will give an indication of mean time between reboot.
.Pp
If
.Nm
is interrupted, it indicates to what date the search has
progressed.
If interrupted with a quit signal
.Nm
indicates how
far the search has progressed and then continues.
.Sh FILES
.Bl -tag -width /var/log/wtmp -compact
.It Pa /var/log/wtmp
login data base
.El
.Sh SEE ALSO
.Xr lastcomm 1 ,
.Xr utmp 5 ,
.Xr ac 8
.Sh HISTORY
.Nm
appeared in
.Bx 3.0 .