.\"	$OpenBSD: time.1,v 1.4 1998/10/30 00:24:39 aaron Exp $
.\"	$NetBSD: time.1,v 1.5 1994/12/08 09:36:57 jtc Exp $
.\"
.\" Copyright (c) 1980, 1991, 1993
.\"	The Regents of the University of California.  All rights reserved.
.\"
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.\" modification, are permitted provided that the following conditions
.\" are met:
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.\"    notice, this list of conditions and the following disclaimer.
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.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. 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.
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.\"     @(#)time.1	8.1 (Berkeley) 6/6/93
.\"
.Dd June 6, 1993
.Dt TIME 1
.Os
.Sh NAME
.Nm time
.Nd time command execution
.Sh SYNOPSIS
.Nm time
.Op Fl lp
.Ar utility
.Sh DESCRIPTION
The
.Nm time
utility
executes and
times
.Ar utility .
After the
.Ar utility
finishes,
.Nm time
writes the total time elapsed,
the time consumed by system overhead,
and the time used to execute 
.Ar utility 
to the standard error stream.
Times are reported in seconds.
.Pp
Available options:
.Bl -tag -width Ds
.It Fl l
The contents of the
.Em rusage
structure are printed.
.It Fl p
The output is formatted as specified by
.St -p1003.2-92 .
.El
.Pp
The
.Xr csh 1
shell has its own and syntactically different built-in version of
.Nm time.
The utility described here
is available as
.Pa /usr/bin/time
to
.Xr csh
users.
.Sh DIAGNOSTICS
The
.Nm time
utility shall exit with one of the following values:
.Bl -tag -width indent
.It 1-125
An error occurred in the 
.Nm time
utility.
.It 126
The 
.Ar utility
was found but could not be invoked.
.It 127
The 
.Ar utility
could not be found.
.El
.Pp
Otherwise, the exit status of 
.Nm time 
shall be that of 
.Ar utility .
.Sh SEE ALSO
.Xr csh 1 ,
.Xr getrusage 2
.Sh FILES
.Bl -tag -width /usr/include/sys/resource.h -compact
.It Pa /usr/include/sys/resource.h
.El
.Sh STANDARDS
The
.Nm
utility conforms to 
.St -p1003.2-92 .
.Sh BUGS
The granularity of seconds on microprocessors is crude and
can result in times being reported for CPU usage which are too large by
a second.