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	1	.\" $NetBSD: last.1,v 1.9 2002/09/30 11:09:04 grant Exp $
	2	.\"
	3	.\" Copyright (c) 1980, 1990, 1993
	4	.\" The Regents of the University of California. All rights reserved.
	5	.\"
	6	.\" Redistribution and use in source and binary forms, with or without
	7	.\" modification, are permitted provided that the following conditions
	8	.\" are met:
	9	.\" 1. Redistributions of source code must retain the above copyright
	10	.\" notice, this list of conditions and the following disclaimer.
	11	.\" 2. Redistributions in binary form must reproduce the above copyright
	12	.\" notice, this list of conditions and the following disclaimer in the
	13	.\" documentation and/or other materials provided with the distribution.
	14	.\" 3. All advertising materials mentioning features or use of this software
	15	.\" must display the following acknowledgement:
	16	.\" This product includes software developed by the University of
	17	.\" California, Berkeley and its contributors.
	18	.\" 4. Neither the name of the University nor the names of its contributors
	19	.\" may be used to endorse or promote products derived from this software
	20	.\" without specific prior written permission.
	21	.\"
	22	.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	23	.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	24	.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	25	.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	26	.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	27	.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	28	.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	29	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	30	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	31	.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	32	.\" SUCH DAMAGE.
	33	.\"
	34	.\" @(#)last.1 8.1 (Berkeley) 6/6/93
	35	.\"
	36	.Dd June 6, 1993
	37	.Dt LAST 1
	38	.Os
	39	.Sh NAME
	40	.Nm last
	41	.Nd indicate last logins of users and ttys
	42	.Sh SYNOPSIS
	43	.Nm
	44	.Op Fl Ns Ar n
	45	.Op Fl T
	46	.Op Fl f Ar file
	47	.Op Fl h Ar host
	48	.Op Fl t Ar tty
	49	.Op Fl L Ar linesize
	50	.Op Fl N Ar namesize
	51	.Op Fl H Ar hostsize
	52	.Op user ...
	53	.Sh DESCRIPTION
	54	.Nm
	55	will list the sessions of specified
	56	.Ar users ,
	57	.Ar ttys ,
	58	and
	59	.Ar hosts ,
	60	in reverse time order.
	61	Each line of output contains
	62	the user name, the tty from which the session was conducted, any
	63	hostname, the start and stop times for the session, and the duration
	64	of the session.
	65	If the session is still continuing or was cut short by
	66	a crash or shutdown,
	67	.Nm
	68	will so indicate.
	69	.Bl -tag -width indent-two
	70	.It Fl f Ar file
	71	.Nm
	72	reads the file
	73	.Ar file
	74	instead of the default,
	75	.Pa /var/log/wtmpx
	76	or
	77	.Pa /var/log/wtmp .
	78	If the file ends with `x', it is treated as a
	79	.Xr utmpx 5
	80	format file, else it is treated as a
	81	.Xr utmp 5
	82	format file.
	83	.It Fl Ar n
	84	Limits the report to
	85	.Ar n
	86	lines.
	87	.It Fl t Ar tty
	88	Specify the
	89	.Ar tty .
	90	Tty names may be given fully or abbreviated, for example,
	91	.Dq Li "last -t 03"
	92	is
	93	equivalent to
	94	.Dq Li "last -t tty03" .
	95	.It Fl h Ar host
	96	.Ar Host
	97	names may be names or internet numbers.
	98	.It Fl T
	99	Display better time information, including the year and seconds.
	100	.It Fl L Ar linesize
	101	Use the provided linesize as the width to format the tty field.
	102	.It Fl N Ar namesize
	103	Use the provided namesize as the width to format the login name field.
	104	.It Fl H Ar hostsize
	105	Use the provided hostsize as the width to format the host name field.
	106	.El
	107	.Pp
	108	If
	109	multiple arguments are given, the information which applies to any of the
	110	arguments is printed, e.g.,
	111	.Dq Li "last root -t console"
	112	would list all of
	113	.Dq Li root Ns 's
	114	sessions as well as all sessions on the console terminal.
	115	If no users, hostnames or terminals are specified,
	116	.Nm
	117	prints a record of
	118	all logins and logouts.
	119	.Pp
	120	The pseudo-user
	121	.Ar reboot
	122	logs in at reboots of the system, thus
	123	.Dq Li last reboot
	124	will give an indication of mean time between reboot.
	125	.Pp
	126	If
	127	.Nm
	128	is interrupted, it indicates to what date the search has
	129	progressed.
	130	If interrupted with a quit signal
	131	.Nm
	132	indicates how
	133	far the search has progressed and then continues.
	134	.Sh FILES
	135	.Bl -tag -width /var/log/wtmpx -compact
	136	.It Pa /var/log/wtmpx
	137	login data base
	138	.It Pa /var/log/wtmp
	139	login data base
	140	.El
	141	.Sh SEE ALSO
	142	.Xr lastcomm 1 ,
	143	.Xr utmpx 5 ,
	144	.Xr utmp 5 ,
	145	.Xr ac 8
	146	.Sh HISTORY
	147	.Nm
	148	appeared in
	149	.Bx 3.0 .