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f9cc65cfda
M7350/oe-core/meta/recipes-extended/time/time-1.7/debian.patch
T f9cc65cfda M7350v1_en_gpl
2024-09-09 08:52:07 +00:00

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Upstream-Status: Backport
--- time-1.7.orig/configure.in
+++ time-1.7/configure.in
@@ -1,11 +1,8 @@
dnl Process this file with autoconf to produce a configure script.
AC_INIT(time.c)
-VERSION=1.7
-AC_SUBST(VERSION)
-PACKAGE=time
-AC_SUBST(PACKAGE)
+AM_INIT_AUTOMAKE(time, 1.7)
-AC_ARG_PROGRAM
+AM_MAINTAINER_MODE
dnl Checks for programs.
AC_PROG_CC
@@ -15,7 +12,7 @@
dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
-AC_CHECK_HEADERS(unistd.h string.h sys/rusage.h)
+AC_CHECK_HEADERS(unistd.h string.h sys/rusage.h sys/resource.h)
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
--- time-1.7.orig/version.texi
+++ time-1.7/version.texi
@@ -1,3 +1,3 @@
-@set UPDATED 12 June 1996
+@set UPDATED 9 May 2002
@set EDITION 1.7
@set VERSION 1.7
--- time-1.7.orig/time.c
+++ time-1.7/time.c
@@ -147,6 +147,10 @@
NULL
};
+
+/* If true, do not show the exit message */
+static boolean quiet;
+
/* If true, show an English description next to each statistic. */
static boolean verbose;
@@ -172,6 +176,7 @@
{"help", no_argument, NULL, 'h'},
{"output-file", required_argument, NULL, 'o'},
{"portability", no_argument, NULL, 'p'},
+ {"quiet", no_argument,NULL, 'q'},
{"verbose", no_argument, NULL, 'v'},
{"version", no_argument, NULL, 'V'},
{NULL, no_argument, NULL, 0}
@@ -333,7 +338,8 @@
else if (WIFSIGNALED (resp->waitstatus))
fprintf (fp, "Command terminated by signal %d\n",
WTERMSIG (resp->waitstatus));
- else if (WIFEXITED (resp->waitstatus) && WEXITSTATUS (resp->waitstatus))
+ else if (WIFEXITED (resp->waitstatus) && WEXITSTATUS (resp->waitstatus)
+ && !quiet)
fprintf (fp, "Command exited with non-zero status %d\n",
WEXITSTATUS (resp->waitstatus));
@@ -523,6 +529,7 @@
char *format; /* Format found in environment. */
/* Initialize the option flags. */
+ quiet = false;
verbose = false;
outfile = NULL;
outfp = stderr;
@@ -536,7 +543,7 @@
if (format)
output_format = format;
- while ((optc = getopt_long (argc, argv, "+af:o:pvV", longopts, (int *) 0))
+ while ((optc = getopt_long (argc, argv, "+af:o:pqvV", longopts, (int *) 0))
!= EOF)
{
switch (optc)
@@ -555,6 +562,9 @@
case 'p':
output_format = posix_format;
break;
+ case 'q':
+ quiet = true;
+ break;
case 'v':
verbose = true;
break;
@@ -642,9 +652,9 @@
fflush (outfp);
if (WIFSTOPPED (res.waitstatus))
- exit (WSTOPSIG (res.waitstatus));
+ exit (WSTOPSIG (res.waitstatus) + 128);
else if (WIFSIGNALED (res.waitstatus))
- exit (WTERMSIG (res.waitstatus));
+ exit (WTERMSIG (res.waitstatus) + 128);
else if (WIFEXITED (res.waitstatus))
exit (WEXITSTATUS (res.waitstatus));
}
@@ -657,7 +667,7 @@
fprintf (stream, "\
Usage: %s [-apvV] [-f format] [-o file] [--append] [--verbose]\n\
[--portability] [--format=format] [--output=file] [--version]\n\
- [--help] command [arg...]\n",
+ [--quiet] [--help] command [arg...]\n",
program_name);
exit (status);
}
--- time-1.7.orig/resuse.h
+++ time-1.7/resuse.h
@@ -36,19 +36,8 @@
# include <sys/rusage.h>
#else
# define TV_MSEC tv_usec / 1000
-# if HAVE_WAIT3
+# if HAVE_SYS_RESOURCE_H
# include <sys/resource.h>
-# else
-/* Process resource usage structure. */
-struct rusage
-{
- struct timeval ru_utime; /* User time used. */
- struct timeval ru_stime; /* System time used. */
- int ru_maxrss, ru_ixrss, ru_idrss, ru_isrss,
- ru_minflt, ru_majflt, ru_nswap, ru_inblock,
- ru_oublock, ru_msgsnd, ru_msgrcv, ru_nsignals,
- ru_nvcsw, ru_nivcsw;
-};
# endif
#endif
--- time-1.7.orig/time.texi
+++ time-1.7/time.texi
@@ -11,6 +11,12 @@
@finalout
@end iftex
+@dircategory Individual utilities
+@direntry
+* time: (time). Run programs and summarize
+ system resource usage.
+@end direntry
+
@ifinfo
This file documents the the GNU @code{time} command for running programs
and summarizing the system resources they use.
@@ -185,6 +191,10 @@
sys %S
@end example
+@item -q
+@itemx --quiet
+Suppress non-zero error code from the executed program.
+
@item -v
@itemx --verbose
@cindex format
--- time-1.7.orig/time.info
+++ time-1.7/time.info
@@ -1,5 +1,10 @@
-This is Info file ./time.info, produced by Makeinfo-1.55 from the input
-file time.texi.
+This is time.info, produced by makeinfo version 4.1 from time.texi.
+
+INFO-DIR-SECTION Individual utilities
+START-INFO-DIR-ENTRY
+* time: (time). Run programs and summarize
+ system resource usage.
+END-INFO-DIR-ENTRY
This file documents the the GNU `time' command for running programs
and summarizing the system resources they use.
@@ -31,7 +36,7 @@
* Resource Measurement:: Measuring program resource use.
- -- The Detailed Node Listing --
+ --- The Detailed Node Listing ---
Measuring Program Resource Use
@@ -58,14 +63,14 @@
The `time' command runs another program, then displays information
about the resources used by that program, collected by the system while
the program was running. You can select which information is reported
-and the format in which it is shown (*note Setting Format::.), or have
+and the format in which it is shown (*note Setting Format::), or have
`time' save the information in a file instead of displaying it on the
-screen (*note Redirecting::.).
+screen (*note Redirecting::).
The resources that `time' can report on fall into the general
categories of time, memory, and I/O and IPC calls. Some systems do not
provide much information about program resource use; `time' reports
-unavailable information as zero values (*note Accuracy::.).
+unavailable information as zero values (*note Accuracy::).
The format of the `time' command is:
@@ -132,6 +137,10 @@
user %U
sys %S
+`-q'
+`--quiet'
+ Suppress non-zero error code from the executed program.
+
`-v'
`--verbose'
Use the built-in verbose format, which displays each available
@@ -174,7 +183,7 @@
The resource specifiers, which are a superset of those recognized by
the `tcsh' builtin `time' command, are listed below. Not all resources
are measured by all versions of Unix, so some of the values might be
-reported as zero (*note Accuracy::.).
+reported as zero (*note Accuracy::).
* Menu:
@@ -308,11 +317,11 @@
`-o FILE'
`--output=FILE'
Write the resource use statistics to FILE. By default, this
- *overwrites* the file, destroying the file's previous contents.
+ _overwrites_ the file, destroying the file's previous contents.
`-a'
`--append'
- *Append* the resource use information to the output file instead
+ _Append_ the resource use information to the output file instead
of overwriting it. This option is only useful with the `-o' or
`--output' option.
@@ -437,7 +446,7 @@
`-a'
`--append'
- *Append* the resource use information to the output file instead
+ _Append_ the resource use information to the output file instead
of overwriting it.
`-f FORMAT'
@@ -462,17 +471,17 @@

Tag Table:
-Node: Top934
-Node: Resource Measurement1725
-Node: Setting Format3678
-Node: Format String4907
-Node: Time Resources6214
-Node: Memory Resources6844
-Node: I/O Resources7549
-Node: Command Info8747
-Node: Redirecting8964
-Node: Examples9754
-Node: Accuracy12064
-Node: Invoking time13586
+Node: Top1115
+Node: Resource Measurement1908
+Node: Setting Format3858
+Node: Format String5164
+Node: Time Resources6470
+Node: Memory Resources7100
+Node: I/O Resources7805
+Node: Command Info9003
+Node: Redirecting9220
+Node: Examples10010
+Node: Accuracy12320
+Node: Invoking time13842

End Tag Table
--- time-1.7.orig/time.html
+++ time-1.7/time.html
@@ -0,0 +1,1021 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
+ "http://www.w3.org/TR/html40/loose.dtd">
+<HTML>
+<!-- Created on September, 1 2003 by texi2html 1.66 -->
+<!--
+Written by: Lionel Cons <Lionel.Cons@cern.ch> (original author)
+ Karl Berry <karl@freefriends.org>
+ Olaf Bachmann <obachman@mathematik.uni-kl.de>
+ and many others.
+Maintained by: Many creative people <dev@texi2html.cvshome.org>
+Send bugs and suggestions to <users@texi2html.cvshome.org>
+
+-->
+<HEAD>
+<TITLE>Measuring Program Resource Use</TITLE>
+
+<META NAME="description" CONTENT="Measuring Program Resource Use">
+<META NAME="keywords" CONTENT="Measuring Program Resource Use">
+<META NAME="resource-type" CONTENT="document">
+<META NAME="distribution" CONTENT="global">
+<META NAME="Generator" CONTENT="texi2html 1.66">
+
+</HEAD>
+
+<BODY LANG="en" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#800080" ALINK="#FF0000">
+
+<A NAME="SEC_Top"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>Measuring Program Resource Use</H1>
+
+<P>
+
+This file documents the the GNU <CODE>time</CODE> command for running programs
+and summarizing the system resources they use.
+This is edition 1.7, for version 1.7.
+</P>
+<P>
+
+</P>
+<TABLE BORDER="0" CELLSPACING="0">
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC1">1. Measuring Program Resource Use</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Measuring program resource use.</TD></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP"> -- The Detailed Node Listing ---
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">Measuring Program Resource Use
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC2">1.1 Setting the Output Format</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Selecting the information reported by <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC3">1.2 The Format String</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">The information <CODE>time</CODE> can report.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC8">1.3 Redirecting Output</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Writing the information to a file.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC9">1.4 Examples</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Examples of using <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC10">1.5 Accuracy</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Limitations on the accuracy of <CODE>time</CODE> output.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC11">1.6 Running the <CODE>time</CODE> Command</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Summary of the options to the <CODE>time</CODE> command.</TD></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">The Format String
+</TH></TR>
+<TR><TH COLSPAN="3" ALIGN="left" VALIGN="TOP">
+</TH></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC4">1.2.1 Time Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC5">1.2.2 Memory Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC6">1.2.3 I/O Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC7">1.2.4 Command Info</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+</TABLE>
+<P>
+
+<HR SIZE=1>
+<A NAME="SEC1"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC2"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[ &lt;&lt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<A NAME="Resource Measurement"></A>
+<H1> 1. Measuring Program Resource Use </H1>
+<!--docid::SEC1::-->
+<P>
+
+The <CODE>time</CODE> command runs another program, then displays information
+about the resources used by that program, collected by the system while
+the program was running. You can select which information is reported
+and the format in which it is shown (see section <A HREF="time.html#SEC2">1.1 Setting the Output Format</A>), or have
+<CODE>time</CODE> save the information in a file instead of displaying it on the
+screen (see section <A HREF="time.html#SEC8">1.3 Redirecting Output</A>).
+</P>
+<P>
+
+The resources that <CODE>time</CODE> can report on fall into the general
+categories of time, memory, and I/O and IPC calls. Some systems do not
+provide much information about program resource use; <CODE>time</CODE>
+reports unavailable information as zero values (see section <A HREF="time.html#SEC10">1.5 Accuracy</A>).
+</P>
+<P>
+
+The format of the <CODE>time</CODE> command is:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>time [option<small>...</small>] <VAR>command</VAR> [<VAR>arg</VAR><small>...</small>]
+</pre></td></tr></table><P>
+
+<A NAME="IDX1"></A>
+<CODE>time</CODE> runs the program <VAR>command</VAR>, with any given arguments
+<VAR>arg</VAR><small>...</small>. When <VAR>command</VAR> finishes, <CODE>time</CODE> displays
+information about resources used by <VAR>command</VAR>.
+</P>
+<P>
+
+Here is an example of using <CODE>time</CODE> to measure the time and other
+resources used by running the program <CODE>grep</CODE>:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time grep nobody /etc/aliases
+nobody:/dev/null
+etc-files:nobody
+misc-group:nobody
+0.07user 0.50system 0:06.69elapsed 8%CPU (0avgtext+489avgdata 324maxresident)k
+46inputs+7outputs (43major+251minor)pagefaults 0swaps
+</pre></td></tr></table><P>
+
+Mail suggestions and bug reports for GNU <CODE>time</CODE> to
+<CODE>bug-gnu-utils@prep.ai.mit.edu</CODE>. Please include the version of
+<CODE>time</CODE>, which you can get by running `<SAMP>time --version</SAMP>', and the
+operating system and C compiler you used.
+</P>
+<P>
+
+<TABLE BORDER="0" CELLSPACING="0">
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC2">1.1 Setting the Output Format</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Selecting the information reported by <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC3">1.2 The Format String</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">The information <CODE>time</CODE> can report.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC8">1.3 Redirecting Output</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Writing the information to a file.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC9">1.4 Examples</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Examples of using <CODE>time</CODE>.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC10">1.5 Accuracy</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Limitations on the accuracy of <CODE>time</CODE> output.</TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC11">1.6 Running the <CODE>time</CODE> Command</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP">Summary of the options to the <CODE>time</CODE> command.</TD></TR>
+</TABLE>
+<P>
+
+<A NAME="Setting Format"></A>
+<HR SIZE="6">
+<A NAME="SEC2"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC3"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.1 Setting the Output Format </H2>
+<!--docid::SEC2::-->
+<P>
+
+<CODE>time</CODE> uses a <EM>format string</EM> to determine which information to
+display about the resources used by the command it runs. See section <A HREF="time.html#SEC3">1.2 The Format String</A>, for the interpretation of the format string contents.
+</P>
+<P>
+
+You can specify a format string with the command line options listed
+below. If no format is specified on the command line, but the
+<CODE>TIME</CODE> environment variable is set, its value is used as the format
+string. Otherwise, the default format built into <CODE>time</CODE> is used:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>%Uuser %Ssystem %Eelapsed %PCPU (%Xtext+%Ddata %Mmax)k
+%Iinputs+%Ooutputs (%Fmajor+%Rminor)pagefaults %Wswaps
+</pre></td></tr></table><P>
+
+The command line options to set the format are:
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>-f <VAR>format</VAR></CODE>
+<DD><DT><CODE>--format=<VAR>format</VAR></CODE>
+<DD>Use <VAR>format</VAR> as the format string.
+<P>
+
+</P>
+<DT><CODE>-p</CODE>
+<DD><DT><CODE>--portability</CODE>
+<DD>Use the following format string, for conformance with POSIX standard
+1003.2:
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>real %e
+user %U
+sys %S
+</pre></td></tr></table><P>
+
+</P>
+<DT><CODE>-q</CODE>
+<DD><DT><CODE>--quiet</CODE>
+<DD>Suppress non-zero error code from the executed program.
+<P>
+
+</P>
+<DT><CODE>-v</CODE>
+<DD><DT><CODE>--verbose</CODE>
+<DD><A NAME="IDX2"></A>
+Use the built-in verbose format, which displays each available piece of
+information on the program's resource use on its own line, with an
+English description of its meaning.
+</DL>
+<P>
+
+<A NAME="Format String"></A>
+<HR SIZE="6">
+<A NAME="SEC3"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC2"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC4"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.2 The Format String </H2>
+<!--docid::SEC3::-->
+<P>
+
+<A NAME="IDX3"></A>
+<A NAME="IDX4"></A>
+The <EM>format string</EM> controls the contents of the <CODE>time</CODE> output.
+It consists of <EM>resource specifiers</EM> and <EM>escapes</EM>, interspersed
+with plain text.
+</P>
+<P>
+
+A backslash introduces an <EM>escape</EM>, which is translated
+into a single printing character upon output. The valid escapes are
+listed below. An invalid escape is output as a question mark followed
+by a backslash.
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>\t</CODE>
+<DD>a tab character
+<P>
+
+</P>
+<DT><CODE>\n</CODE>
+<DD>a newline
+<P>
+
+</P>
+<DT><CODE>\\</CODE>
+<DD>a literal backslash
+</DL>
+<P>
+
+<CODE>time</CODE> always prints a newline after printing the resource use
+information, so normally format strings do not end with a newline
+character (or `<SAMP>\n</SAMP>').
+</P>
+<P>
+
+A resource specifier consists of a percent sign followed by another
+character. An invalid resource specifier is output as a question mark
+followed by the invalid character. Use `<SAMP>%%</SAMP>' to output a literal
+percent sign.
+</P>
+<P>
+
+The resource specifiers, which are a superset of those recognized by the
+<CODE>tcsh</CODE> builtin <CODE>time</CODE> command, are listed below. Not all
+resources are measured by all versions of Unix, so some of the values
+might be reported as zero (see section <A HREF="time.html#SEC10">1.5 Accuracy</A>).
+</P>
+<P>
+
+<TABLE BORDER="0" CELLSPACING="0">
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC4">1.2.1 Time Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC5">1.2.2 Memory Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC6">1.2.3 I/O Resources</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+<TR><TD ALIGN="left" VALIGN="TOP"><A HREF="time.html#SEC7">1.2.4 Command Info</A></TD><TD>&nbsp;&nbsp;</TD><TD ALIGN="left" VALIGN="TOP"></TD></TR>
+</TABLE>
+<P>
+
+<A NAME="Time Resources"></A>
+<HR SIZE="6">
+<A NAME="SEC4"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC3"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC5"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.1 Time Resources </H3>
+<!--docid::SEC4::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>E</CODE>
+<DD>Elapsed real (wall clock) time used by the process, in
+[hours:]minutes:seconds.
+<P>
+
+</P>
+<DT><CODE>e</CODE>
+<DD>Elapsed real (wall clock) time used by the process, in
+seconds.
+<P>
+
+</P>
+<DT><CODE>S</CODE>
+<DD>Total number of CPU-seconds used by the system on behalf of the process
+(in kernel mode), in seconds.
+<P>
+
+</P>
+<DT><CODE>U</CODE>
+<DD>Total number of CPU-seconds that the process used directly (in user
+mode), in seconds.
+<P>
+
+</P>
+<DT><CODE>P</CODE>
+<DD>Percentage of the CPU that this job got. This is just user + system
+times divied by the total running time.
+</DL>
+<P>
+
+<A NAME="Memory Resources"></A>
+<HR SIZE="6">
+<A NAME="SEC5"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC4"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC6"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.2 Memory Resources </H3>
+<!--docid::SEC5::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>M</CODE>
+<DD>Maximum resident set size of the process during its lifetime, in
+Kilobytes.
+<P>
+
+</P>
+<DT><CODE>t</CODE>
+<DD>Average resident set size of the process, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>K</CODE>
+<DD>Average total (data+stack+text) memory use of the process, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>D</CODE>
+<DD>Average size of the process's unshared data area, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>p</CODE>
+<DD>Average size of the process's unshared stack, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>X</CODE>
+<DD>Average size of the process's shared text, in Kilobytes.
+<P>
+
+</P>
+<DT><CODE>Z</CODE>
+<DD>System's page size, in bytes. This is a per-system constant, but
+varies between systems.
+</DL>
+<P>
+
+<A NAME="I/O Resources"></A>
+<HR SIZE="6">
+<A NAME="SEC6"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC5"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC7"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.3 I/O Resources </H3>
+<!--docid::SEC6::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>F</CODE>
+<DD>Number of major, or I/O-requiring, page faults that occurred while the
+process was running. These are faults where the page has actually
+migrated out of primary memory.
+<P>
+
+</P>
+<DT><CODE>R</CODE>
+<DD>Number of minor, or recoverable, page faults. These are pages that are
+not valid (so they fault) but which have not yet been claimed by other
+virtual pages. Thus the data in the page is still valid but the system
+tables must be updated.
+<P>
+
+</P>
+<DT><CODE>W</CODE>
+<DD>Number of times the process was swapped out of main memory.
+<P>
+
+</P>
+<DT><CODE>c</CODE>
+<DD>Number of times the process was context-switched involuntarily (because
+the time slice expired).
+<P>
+
+</P>
+<DT><CODE>w</CODE>
+<DD>Number of times that the program was context-switched voluntarily, for
+instance while waiting for an I/O operation to complete.
+<P>
+
+</P>
+<DT><CODE>I</CODE>
+<DD>Number of file system inputs by the process.
+<P>
+
+</P>
+<DT><CODE>O</CODE>
+<DD>Number of file system outputs by the process.
+<P>
+
+</P>
+<DT><CODE>r</CODE>
+<DD>Number of socket messages received by the process.
+<P>
+
+</P>
+<DT><CODE>s</CODE>
+<DD>Number of socket messages sent by the process.
+<P>
+
+</P>
+<DT><CODE>k</CODE>
+<DD>Number of signals delivered to the process.
+</DL>
+<P>
+
+<A NAME="Command Info"></A>
+<HR SIZE="6">
+<A NAME="SEC7"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC6"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC8"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H3> 1.2.4 Command Info </H3>
+<!--docid::SEC7::-->
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>C</CODE>
+<DD>Name and command line arguments of the command being timed.
+<P>
+
+</P>
+<DT><CODE>x</CODE>
+<DD>Exit status of the command.
+</DL>
+<P>
+
+<A NAME="Redirecting"></A>
+<HR SIZE="6">
+<A NAME="SEC8"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC7"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC9"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.3 Redirecting Output </H2>
+<!--docid::SEC8::-->
+<P>
+
+By default, <CODE>time</CODE> writes the resource use statistics to the
+standard error stream. The options below make it write the statistics
+to a file instead. Doing this can be useful if the program you're
+running writes to the standard error or you're running <CODE>time</CODE>
+noninteractively or in the background.
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>-o <VAR>file</VAR></CODE>
+<DD><DT><CODE>--output=<VAR>file</VAR></CODE>
+<DD>Write the resource use statistics to <VAR>file</VAR>. By default, this
+<EM>overwrites</EM> the file, destroying the file's previous contents.
+<P>
+
+</P>
+<DT><CODE>-a</CODE>
+<DD><DT><CODE>--append</CODE>
+<DD><EM>Append</EM> the resource use information to the output file instead
+of overwriting it. This option is only useful with the `<SAMP>-o</SAMP>' or
+`<SAMP>--output</SAMP>' option.
+</DL>
+<P>
+
+<A NAME="Examples"></A>
+<HR SIZE="6">
+<A NAME="SEC9"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC8"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC10"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.4 Examples </H2>
+<!--docid::SEC9::-->
+<P>
+
+Run the command `<SAMP>wc /etc/hosts</SAMP>' and show the default information:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time wc /etc/hosts
+ 35 111 1134 /etc/hosts
+0.00user 0.01system 0:00.04elapsed 25%CPU (0avgtext+0avgdata 0maxresident)k
+1inputs+1outputs (0major+0minor)pagefaults 0swaps
+</pre></td></tr></table><P>
+
+Run the command `<SAMP>ls -Fs</SAMP>' and show just the user, system, and
+wall-clock time:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time -f &quot;\t%E real,\t%U user,\t%S sys&quot; ls -Fs
+total 16
+1 account/ 1 db/ 1 mail/ 1 run/
+1 backups/ 1 emacs/ 1 msgs/ 1 rwho/
+1 crash/ 1 games/ 1 preserve/ 1 spool/
+1 cron/ 1 log/ 1 quotas/ 1 tmp/
+ 0:00.03 real, 0.00 user, 0.01 sys
+</pre></td></tr></table><P>
+
+Edit the file `<TT>.bashrc</TT>' and have <CODE>time</CODE> append the elapsed time
+and number of signals to the file `<TT>log</TT>', reading the format string
+from the environment variable <CODE>TIME</CODE>:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ export TIME=&quot;\t%E,\t%k&quot; # If using bash or ksh
+eg$ setenv TIME &quot;\t%E,\t%k&quot; # If using csh or tcsh
+eg$ time -a -o log emacs .bashrc
+eg$ cat log
+ 0:16.55, 726
+</pre></td></tr></table><P>
+
+Run the command `<SAMP>sleep 4</SAMP>' and show all of the information about it
+verbosely:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>eg$ time -v sleep 4
+ Command being timed: &quot;sleep 4&quot;
+ User time (seconds): 0.00
+ System time (seconds): 0.05
+ Percent of CPU this job got: 1%
+ Elapsed (wall clock) time (h:mm:ss or m:ss): 0:04.26
+ Average shared text size (kbytes): 36
+ Average unshared data size (kbytes): 24
+ Average stack size (kbytes): 0
+ Average total size (kbytes): 60
+ Maximum resident set size (kbytes): 32
+ Average resident set size (kbytes): 24
+ Major (requiring I/O) page faults: 3
+ Minor (reclaiming a frame) page faults: 0
+ Voluntary context switches: 11
+ Involuntary context switches: 0
+ Swaps: 0
+ File system inputs: 3
+ File system outputs: 1
+ Socket messages sent: 0
+ Socket messages received: 0
+ Signals delivered: 1
+ Page size (bytes): 4096
+ Exit status: 0
+</pre></td></tr></table><P>
+
+<A NAME="Accuracy"></A>
+<HR SIZE="6">
+<A NAME="SEC10"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC9"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC11"> &gt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.5 Accuracy </H2>
+<!--docid::SEC10::-->
+<P>
+
+The elapsed time is not collected atomically with the execution of the
+program; as a result, in bizarre circumstances (if the <CODE>time</CODE>
+command gets stopped or swapped out in between when the program being
+timed exits and when <CODE>time</CODE> calculates how long it took to run), it
+could be much larger than the actual execution time.
+</P>
+<P>
+
+When the running time of a command is very nearly zero, some values
+(e.g., the percentage of CPU used) may be reported as either zero (which
+is wrong) or a question mark.
+</P>
+<P>
+
+Most information shown by <CODE>time</CODE> is derived from the <CODE>wait3</CODE>
+system call. The numbers are only as good as those returned by
+<CODE>wait3</CODE>. Many systems do not measure all of the resources that
+<CODE>time</CODE> can report on; those resources are reported as zero. The
+systems that measure most or all of the resources are based on 4.2 or
+4.3BSD. Later BSD releases use different memory management code that
+measures fewer resources.
+</P>
+<P>
+
+On systems that do not have a <CODE>wait3</CODE> call that returns status
+information, the <CODE>times</CODE> system call is used instead. It provides
+much less information than <CODE>wait3</CODE>, so on those systems <CODE>time</CODE>
+reports most of the resources as zero.
+</P>
+<P>
+
+The `<SAMP>%I</SAMP>' and `<SAMP>%O</SAMP>' values are allegedly only &quot;real&quot; input
+and output and do not include those supplied by caching devices. The
+meaning of &quot;real&quot; I/O reported by `<SAMP>%I</SAMP>' and `<SAMP>%O</SAMP>' may be
+muddled for workstations, especially diskless ones.
+</P>
+<P>
+
+<A NAME="Invoking time"></A>
+<HR SIZE="6">
+<A NAME="SEC11"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC10"> &lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC1"> &lt;&lt; </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top"> Up </A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[ &gt;&gt; ]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT"> &nbsp; <TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H2> 1.6 Running the <CODE>time</CODE> Command </H2>
+<!--docid::SEC11::-->
+<P>
+
+The format of the <CODE>time</CODE> command is:
+</P>
+<P>
+
+<TABLE><tr><td>&nbsp;</td><td class=example><pre>time [option<small>...</small>] <VAR>command</VAR> [<VAR>arg</VAR><small>...</small>]
+</pre></td></tr></table><P>
+
+<A NAME="IDX5"></A>
+<CODE>time</CODE> runs the program <VAR>command</VAR>, with any given arguments
+<VAR>arg</VAR><small>...</small>. When <VAR>command</VAR> finishes, <CODE>time</CODE> displays
+information about resources used by <VAR>command</VAR> (on the standard error
+output, by default). If <VAR>command</VAR> exits with non-zero status or is
+terminated by a signal, <CODE>time</CODE> displays a warning message and the
+exit status or signal number.
+</P>
+<P>
+
+Options to <CODE>time</CODE> must appear on the command line before
+<VAR>command</VAR>. Anything on the command line after <VAR>command</VAR> is
+passed as arguments to <VAR>command</VAR>.
+</P>
+<P>
+
+</P>
+<DL COMPACT>
+<DT><CODE>-o <VAR>file</VAR></CODE>
+<DD><DT><CODE>--output=<VAR>file</VAR></CODE>
+<DD>Write the resource use statistics to <VAR>file</VAR>.
+<P>
+
+</P>
+<DT><CODE>-a</CODE>
+<DD><DT><CODE>--append</CODE>
+<DD><EM>Append</EM> the resource use information to the output file instead
+of overwriting it.
+<P>
+
+</P>
+<DT><CODE>-f <VAR>format</VAR></CODE>
+<DD><DT><CODE>--format=<VAR>format</VAR></CODE>
+<DD>Use <VAR>format</VAR> as the format string.
+<P>
+
+</P>
+<DT><CODE>--help</CODE>
+<DD>Print a summary of the command line options to <CODE>time</CODE> and exit.
+<P>
+
+</P>
+<DT><CODE>-p</CODE>
+<DD><DT><CODE>--portability</CODE>
+<DD>Use the POSIX format.
+<P>
+
+</P>
+<DT><CODE>-v</CODE>
+<DD><DT><CODE>--verbose</CODE>
+<DD><A NAME="IDX6"></A>
+Use the built-in verbose format.
+<P>
+
+</P>
+<DT><CODE>-V</CODE>
+<DD><DT><CODE>--version</CODE>
+<DD><A NAME="IDX7"></A>
+Print the version number of <CODE>time</CODE> and exit.
+</DL>
+<P>
+
+<HR SIZE="6">
+<A NAME="SEC_Contents"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>Table of Contents</H1>
+<BLOCKQUOTE>
+<A NAME="TOC1" HREF="time.html#SEC1">1. Measuring Program Resource Use</A>
+<BR>
+<BLOCKQUOTE>
+<A NAME="TOC2" HREF="time.html#SEC2">1.1 Setting the Output Format</A>
+<BR>
+<A NAME="TOC3" HREF="time.html#SEC3">1.2 The Format String</A>
+<BR>
+<BLOCKQUOTE>
+<A NAME="TOC4" HREF="time.html#SEC4">1.2.1 Time Resources</A>
+<BR>
+<A NAME="TOC5" HREF="time.html#SEC5">1.2.2 Memory Resources</A>
+<BR>
+<A NAME="TOC6" HREF="time.html#SEC6">1.2.3 I/O Resources</A>
+<BR>
+<A NAME="TOC7" HREF="time.html#SEC7">1.2.4 Command Info</A>
+<BR>
+</BLOCKQUOTE>
+<A NAME="TOC8" HREF="time.html#SEC8">1.3 Redirecting Output</A>
+<BR>
+<A NAME="TOC9" HREF="time.html#SEC9">1.4 Examples</A>
+<BR>
+<A NAME="TOC10" HREF="time.html#SEC10">1.5 Accuracy</A>
+<BR>
+<A NAME="TOC11" HREF="time.html#SEC11">1.6 Running the <CODE>time</CODE> Command</A>
+<BR>
+</BLOCKQUOTE>
+</BLOCKQUOTE>
+<HR SIZE=1>
+<A NAME="SEC_OVERVIEW"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>Short Table of Contents</H1>
+<BLOCKQUOTE>
+<A NAME="TOC1" HREF="time.html#SEC1">1. Measuring Program Resource Use</A>
+<BR>
+
+</BLOCKQUOTE>
+<HR SIZE=1>
+<A NAME="SEC_About"></A>
+<TABLE CELLPADDING=1 CELLSPACING=1 BORDER=0>
+<TR><TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Top">Top</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_Contents">Contents</A>]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[Index]</TD>
+<TD VALIGN="MIDDLE" ALIGN="LEFT">[<A HREF="time.html#SEC_About"> ? </A>]</TD>
+</TR></TABLE>
+<H1>About this document</H1>
+This document was generated
+by
+using <A HREF="http://texi2html.cvshome.org"><I>texi2html</I></A>
+<P></P>
+The buttons in the navigation panels have the following meaning:
+<P></P>
+<table border = "1">
+<TR>
+<TH> Button </TH>
+<TH> Name </TH>
+<TH> Go to </TH>
+<TH> From 1.2.3 go to</TH>
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+Forward
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+FastForward
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+ [Contents] </TD>
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+Contents
+</TD>
+<TD>
+table of contents
+</TD>
+<TD>
+ &nbsp;
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [Index] </TD>
+<TD ALIGN="CENTER">
+Index
+</TD>
+<TD>
+concept index
+</TD>
+<TD>
+ &nbsp;
+</TD>
+</TR>
+<TR>
+<TD ALIGN="CENTER">
+ [ ? ] </TD>
+<TD ALIGN="CENTER">
+About
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+<TD>
+this page
+</TD>
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+ &nbsp;
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+ <P>
+ where the <STRONG> Example </STRONG> assumes that the current position
+ is at <STRONG> Subsubsection One-Two-Three </STRONG> of a document of
+ the following structure:</P>
+ <UL>
+ <LI> 1. Section One
+ <UL>
+ <LI>1.1 Subsection One-One
+ <UL>
+ <LI>...</LI>
+ </UL>
+ <LI>1.2 Subsection One-Two
+ <UL>
+ <LI>1.2.1 Subsubsection One-Two-One</LI>
+ <LI>1.2.2 Subsubsection One-Two-Two</LI>
+ <LI>1.2.3 Subsubsection One-Two-Three &nbsp; &nbsp;
+ <STRONG>&lt;== Current Position </STRONG></LI>
+ <LI>1.2.4 Subsubsection One-Two-Four</LI>
+ </UL>
+ </LI>
+ <LI>1.3 Subsection One-Three
+ <UL>
+ <LI>...</LI>
+ </UL>
+ </LI>
+ <LI>1.4 Subsection One-Four</LI>
+ </UL>
+ </LI>
+ </UL>
+
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