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+.\"	$NetBSD: lastcomm.1,v 1.11 2006/12/22 08:00:20 ad Exp $
+.\"
+.\" Copyright (c) 1980, 1990, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	@(#)lastcomm.1	8.1 (Berkeley) 6/6/93
+.\"
+.Dd December 22, 2006
+.Dt LASTCOMM 1
+.Os
+.Sh NAME
+.Nm lastcomm
+.Nd show last commands executed in reverse order
+.Sh SYNOPSIS
+.Nm
+.Op Fl f Ar file
+.Op Ar command ...
+.Op Ar user ...
+.Op Ar terminal ...
+.Sh DESCRIPTION
+.Nm
+gives information on previously executed commands.
+With no arguments,
+.Nm
+prints information about all the commands recorded
+during the current accounting file's lifetime.
+.Pp
+Option:
+.Pp
+.Bl -tag -width Fl
+.It Fl f Ar file
+Read from
+.Ar file
+rather than the default
+accounting file.
+.El
+.Pp
+If called with arguments, only accounting entries with a
+matching
+.Ar command
+name,
+.Ar user
+name,
+or
+.Ar terminal
+name
+are printed.
+So, for example:
+.Pp
+.Dl lastcomm a.out root ttyd0
+.Pp
+would produce a listing of all the
+executions of commands named
+.Pa a.out
+by user
+.Ar root
+on the terminal
+.Ar ttyd0  .
+.Pp
+For each process entry, the following are printed.
+.Pp
+.Bl -bullet -offset indent -compact
+.It
+The name of the user who ran the process.
+.It
+Flags, as accumulated by the accounting facilities in the system.
+.It
+The command name under which the process was called.
+.It
+The amount of cpu time used by the process (in seconds).
+.It
+The time the process started.
+.It
+The elapsed time of the process.
+.El
+.Pp
+The flags are encoded as follows:
+.Dq S
+indicates the command was
+executed by the super-user,
+.Dq F
+indicates the command ran after
+a fork, but without a following
+.Xr exec 3 ,
+.Dq C
+indicates the command was run in PDP-11 compatibility mode
+(VAX only),
+.Dq D
+indicates the command terminated with the generation of a
+.Pa core
+file, and
+.Dq X
+indicates the command was terminated with a signal.
+.Sh FILES
+.Bl -tag -width /var/account/acct -compact
+.It Pa /var/account/acct
+Default accounting file.
+.El
+.Sh SEE ALSO
+.Xr last 1 ,
+.Xr sigaction 2 ,
+.Xr acct 5 ,
+.Xr core 5
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 3.0 .