.\"	$NetBSD: last.1,v 1.9 2002/09/30 11:09:04 grant Exp $
.\"
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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 Fl L Ar linesize
.Op Fl N Ar namesize
.Op Fl H Ar hostsize
.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.
.Bl -tag -width indent-two
.It Fl f Ar file
.Nm
reads the file
.Ar file
instead of the default,
.Pa /var/log/wtmpx
or
.Pa /var/log/wtmp .
If the file ends with `x', it is treated as a
.Xr utmpx 5
format file, else it is treated as a
.Xr utmp 5
format file.
.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.
.It Fl L Ar linesize
Use the provided linesize as the width to format the tty field.
.It Fl N Ar namesize
Use the provided namesize as the width to format the login name field.
.It Fl H Ar hostsize
Use the provided hostsize as the width to format the host name field.
.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/wtmpx -compact
.It Pa /var/log/wtmpx
login data base
.It Pa /var/log/wtmp
login data base
.El
.Sh SEE ALSO
.Xr lastcomm 1 ,
.Xr utmpx 5 ,
.Xr utmp 5 ,
.Xr ac 8
.Sh HISTORY
.Nm
appeared in
.Bx 3.0 .