1.\" $NetBSD: lastcomm.1,v 1.12 2012/01/31 16:30:40 christos 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. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)lastcomm.1 8.1 (Berkeley) 6/6/93 31.\" 32.Dd January 31, 2012 33.Dt LASTCOMM 1 34.Os 35.Sh NAME 36.Nm lastcomm 37.Nd show last commands executed in reverse order 38.Sh SYNOPSIS 39.Nm 40.Op Fl w 41.Op Fl f Ar file 42.Op Ar command ... 43.Op Ar user ... 44.Op Ar terminal ... 45.Sh DESCRIPTION 46.Nm 47gives information on previously executed commands. 48With no arguments, 49.Nm 50prints information about all the commands recorded 51during the current accounting file's lifetime. 52.Pp 53Option: 54.Pp 55.Bl -tag -width Fl 56.It Fl f Ar file 57Read from 58.Ar file 59rather than the default 60accounting file. 61.It Fl w 62Use as many columns as needed to print the output instead of limiting it to 80. 63.El 64.Pp 65If called with arguments, only accounting entries with a 66matching 67.Ar command 68name, 69.Ar user 70name, 71or 72.Ar terminal 73name 74are printed. 75So, for example: 76.Pp 77.Dl lastcomm a.out root ttyd0 78.Pp 79would produce a listing of all the 80executions of commands named 81.Pa a.out 82by user 83.Ar root 84on the terminal 85.Ar ttyd0 . 86.Pp 87For each process entry, the following are printed. 88.Pp 89.Bl -bullet -offset indent -compact 90.It 91The name of the user who ran the process. 92.It 93Flags, as accumulated by the accounting facilities in the system. 94.It 95The command name under which the process was called. 96.It 97The amount of cpu time used by the process (in seconds). 98.It 99The time the process started. 100.It 101The elapsed time of the process. 102.El 103.Pp 104The flags are encoded as follows: 105.Dq S 106indicates the command was 107executed by the super-user, 108.Dq F 109indicates the command ran after 110a fork, but without a following 111.Xr exec 3 , 112.Dq C 113indicates the command was run in PDP-11 compatibility mode 114(VAX only), 115.Dq D 116indicates the command terminated with the generation of a 117.Pa core 118file, and 119.Dq X 120indicates the command was terminated with a signal. 121.Pp 122The 123.Dq S 124and 125.Dq C 126flags are no longer recorded by the system, but will be reported by 127.Nm 128when reading from an accounting file generated by an older version 129of the system. 130.Sh FILES 131.Bl -tag -width /var/account/acct -compact 132.It Pa /var/account/acct 133Default accounting file. 134.El 135.Sh SEE ALSO 136.Xr last 1 , 137.Xr sigaction 2 , 138.Xr acct 5 , 139.Xr core 5 140.Sh HISTORY 141The 142.Nm 143command appeared in 144.Bx 3.0 . 145