1.\" $NetBSD: time.1,v 1.7 1997/10/20 03:28:20 lukem Exp $ 2.\" 3.\" Copyright (c) 1980, 1991, 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.\" @(#)time.1 8.1 (Berkeley) 6/6/93 35.\" 36.Dd June 6, 1993 37.Dt TIME 1 38.Os 39.Sh NAME 40.Nm time 41.Nd time command execution 42.Sh SYNOPSIS 43.Nm 44.Op Fl lp 45.Ar utility 46.Sh DESCRIPTION 47The 48.Nm 49utility 50executes and 51times 52.Ar utility . 53After the 54.Ar utility 55finishes, 56.Nm 57writes the total time elapsed, 58the time consumed by system overhead, 59and the time used to execute 60.Ar utility 61to the standard error stream. 62Times are reported in seconds. 63.Pp 64Available options: 65.Bl -tag -width Ds 66.It Fl l 67The contents of the 68.Em rusage 69structure are printed. 70.It Fl p 71The output is formatted as specified by 72.St -p1003.2-92 . 73.El 74.Pp 75The 76.Xr csh 1 77has its own and syntactically different builtin version of 78.Nm "" . 79The utility described here 80is available as 81.Pa /usr/bin/time 82to 83.Xr csh 84users. 85.Sh DIAGNOSTICS 86The 87.Nm 88utility shall exit with one of the following values: 89.Bl -tag -width indent 90.It 1-125 91An error occurred in the 92.Nm 93utility. 94.It 126 95The 96.Ar utility 97was found but could not be invoked. 98.It 127 99The 100.Ar utility 101could not be found. 102.El 103.Pp 104Otherwise, the exit status of 105.Nm 106shall be that of 107.Ar utility . 108.Sh SEE ALSO 109.Xr csh 1 , 110.Xr getrusage 2 111.Sh FILES 112.Bl -tag -width /usr/include/sys/resource.h -compact 113.It Pa /usr/include/sys/resource.h 114.El 115.Sh STANDARDS 116The 117.Nm 118utility conforms to 119.St -p1003.2-92 . 120.Sh BUGS 121The granularity of seconds on microprocessors is crude and 122can result in times being reported for CPU usage which are too large by 123a second. 124