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[dragonfly.git] / usr.bin / last / last.1
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1.\" $NetBSD: last.1,v 1.9 2002/09/30 11:09:04 grant Exp $
2.\"
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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
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e1b75ce7 36.Dd June 6, 1993
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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
e1b75ce7 45.Op Fl T
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46.Op Fl f Ar file
47.Op Fl h Ar host
984263bc 48.Op Fl t Ar tty
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49.Op Fl L Ar linesize
50.Op Fl N Ar namesize
51.Op Fl H Ar hostsize
52.Op user ...
984263bc 53.Sh DESCRIPTION
984263bc 54.Nm
e1b75ce7 55will list the sessions of specified
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56.Ar users ,
57.Ar ttys ,
58and
59.Ar hosts ,
e1b75ce7 60in reverse time order.
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61Each line of output contains
62the user name, the tty from which the session was conducted, any
63hostname, the start and stop times for the session, and the duration
64of the session.
65If the session is still continuing or was cut short by
66a crash or shutdown,
67.Nm
68will so indicate.
984263bc 69.Bl -tag -width indent-two
984263bc 70.It Fl f Ar file
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71.Nm
72reads the file
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73.Ar file
74instead of the default,
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75.Pa /var/log/wtmpx
76or
984263bc 77.Pa /var/log/wtmp .
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78If the file ends with `x', it is treated as a
79.Xr utmpx 5
80format file, else it is treated as a
81.Xr utmp 5
82format file.
83.It Fl Ar n
84Limits the report to
85.Ar n
86lines.
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87.It Fl t Ar tty
88Specify the
89.Ar tty .
90Tty names may be given fully or abbreviated, for example,
91.Dq Li "last -t 03"
92is
93equivalent to
94.Dq Li "last -t tty03" .
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95.It Fl h Ar host
96.Ar Host
97names may be names or internet numbers.
98.It Fl T
99Display better time information, including the year and seconds.
100.It Fl L Ar linesize
101Use the provided linesize as the width to format the tty field.
102.It Fl N Ar namesize
103Use the provided namesize as the width to format the login name field.
104.It Fl H Ar hostsize
105Use the provided hostsize as the width to format the host name field.
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106.El
107.Pp
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108If
109multiple arguments are given, the information which applies to any of the
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110arguments is printed, e.g.,
111.Dq Li "last root -t console"
112would list all of
113.Dq Li root Ns 's
114sessions as well as all sessions on the console terminal.
e1b75ce7 115If no users, hostnames or terminals are specified,
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116.Nm
117prints a record of
118all logins and logouts.
119.Pp
120The pseudo-user
121.Ar reboot
122logs in at reboots of the system, thus
123.Dq Li last reboot
124will give an indication of mean time between reboot.
125.Pp
126If
127.Nm
128is interrupted, it indicates to what date the search has
129progressed.
130If interrupted with a quit signal
131.Nm
132indicates how
133far the search has progressed and then continues.
134.Sh FILES
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135.Bl -tag -width /var/log/wtmpx -compact
136.It Pa /var/log/wtmpx
137login data base
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138.It Pa /var/log/wtmp
139login data base
140.El
141.Sh SEE ALSO
142.Xr lastcomm 1 ,
e1b75ce7 143.Xr utmpx 5 ,
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144.Xr utmp 5 ,
145.Xr ac 8
1847e88f 146.Sh HISTORY
1847e88f 147.Nm
e1b75ce7 148appeared in
1847e88f 149.Bx 3.0 .