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186 lines
4.8 KiB
Groff
186 lines
4.8 KiB
Groff
.\" Copyright (c) 1980, 1990, 1993
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" From: @(#)lastcomm.1 8.1 (Berkeley) 6/6/93
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.\" $FreeBSD$
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.\"
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.Dd May 17, 2012
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.Dt LASTCOMM 1
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.Os
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.Sh NAME
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.Nm lastcomm
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.Nd show last commands executed
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.Sh SYNOPSIS
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.Nm
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.Op Fl EScesu
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.Op Fl f Ar file
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.Op Cm + Ns Ar format
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.Op Ar command ...\&
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.Op Ar user ...\&
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.Op Ar terminal ...\&
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.Sh DESCRIPTION
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The
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.Nm
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utility gives information on previously executed commands.
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With no arguments,
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.Nm
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prints information about all the commands recorded
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during the current accounting file's lifetime.
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.Pp
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The following options are available:
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.Bl -tag -width indent
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.It Fl E
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Print the time the process exited.
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.It Fl S
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Print the time the process started.
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.It Fl c
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Print the amount of cpu time used by the process.
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.It Fl e
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Print the amount of elapsed time used by the process.
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.It Fl s
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Print the amount of system time used by the process.
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.It Fl u
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Print the amount of user time used by the process.
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.It Fl f Ar file
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Read from
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.Ar file
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rather than the default
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.Pa /var/account/acct .
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If
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.Ar file
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is a single dash
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.Pq Sq \&-
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.Nm
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reads accounting entries from the standard input.
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.El
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.Pp
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An operand with a leading plus sign
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.Pq Sq +
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is followed a user-defined format string which specifies the format
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in which to display the process's start or exit date and time.
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The format string may contain any of the conversion specifications
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described in the
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.Xr strftime 3
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manual page, as well as arbitrary text.
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.Pp
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If no options are specified,
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.Fl cS
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is assumed.
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If
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.Nm
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is invoked with arguments, only accounting entries with a
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matching
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.Ar command
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name,
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.Ar user
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name,
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or
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.Ar terminal
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name
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are printed.
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For example:
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.Pp
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.Dl lastcomm a.out root ttyd0
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.Pp
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would produce a listing of all the
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executions of commands named
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.Pa a.out
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by user
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.Ar root
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on the terminal
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.Ar ttyd0 .
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.Pp
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For each process entry, the following are printed.
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.Pp
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.Bl -bullet -offset indent -compact
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.It
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The name of the user who ran the process.
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.It
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Flags, as accumulated by the accounting facilities in the system.
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.It
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The command name under which the process was called.
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.It
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The amount of
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CPU
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.Pq Fl c ,
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wall
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.Pq Fl e ,
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system
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.Pq Fl s ,
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or user
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.Pq Fl u
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time used by the process (in seconds).
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.It
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The time the process started
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.Pq Fl S
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or exited
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.Pq Fl E .
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.El
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.Pp
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The flags are encoded as follows: ``S'' indicates the command was
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executed by the super-user, ``F'' indicates the command ran after
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a fork, but without a following
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.Xr exec 3 ,
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.\" ``C'' indicates the command was run in PDP-11 compatibility mode
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.\" (VAX only),
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``D'' indicates the command terminated with the generation of a
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.Pa core
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file, and ``X'' indicates the command was terminated with a signal.
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.Pp
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By default, accounting entries are printed going backwards in time,
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starting from the time
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.Nm
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was executed.
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However, if
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.Nm
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reads entries from its standard input, then entries are printed in
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the order they are read.
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.Sh FILES
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.Bl -tag -width /var/account/acct -compact
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.It Pa /var/account/acct
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default accounting file
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.El
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.Sh EXAMPLES
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The command
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.Dl lastcomm -Ee
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will print the exit time and elapsed time of each command logged in
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.Pa /var/account/acct ,
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while
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.Dl tail -f -c 0 /var/account/acct | lastcomm -f -
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will print details of each terminating command.
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.Sh SEE ALSO
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.Xr last 1 ,
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.Xr sigaction 2 ,
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.Xr strftime 3 ,
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.Xr acct 5 ,
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.Xr core 5
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 3.0 .
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