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<H1>TIME</H1>
Section: GNU Awk Extension Modules (3am)<BR>Updated: Feb 02 2018<BR><A HREF="#index">Index</A>
<A HREF="/cgi-bin/man/man2html">Return to Main Contents</A><HR>
<A NAME="lbAB">&nbsp;</A>
<H2>NAME</H2>
time - time functions for gawk
<A NAME="lbAC">&nbsp;</A>
<H2>SYNOPSIS</H2>
@load &quot;time&quot;
<P>
time = gettimeofday()
<BR>
ret = sleep(amount)
<A NAME="lbAD">&nbsp;</A>
<H2>DESCRIPTION</H2>
The
<I>time</I>
extension adds two functions named
<B>gettimeofday()</B>
and
<B>sleep()</B>,
as follows.
<DL COMPACT>
<DT id="1"><B>gettimeofday()</B>
<DD>
This function returns the number of seconds since the Epoch
as a floating-point value. It should have subsecond precision.
It returns -1 upon error and sets
<B>ERRNO</B>
to indicate the problem.
<DT id="2"><B>sleep(</B><I>seconds</I><B>)</B>
<DD>
This function attempts to sleep for the given amount of seconds, which
may include a fractional portion.
If
<I>seconds</I>
is negative, or the attempt to sleep fails,
then it returns -1 and sets
<B>ERRNO</B>.
Otherwise, the function should return 0 after sleeping
for the indicated amount of time.
</DL>
<A NAME="lbAE">&nbsp;</A>
<H2>EXAMPLE</H2>
<PRE>
@load &quot;time&quot;
...
printf &quot;It is now %g seconds since the Epoch\n&quot;, gettimeofday()
printf &quot;Pausing for a while... &quot; ; sleep(2.5) ; print &quot;done&quot;
</PRE>
<A NAME="lbAF">&nbsp;</A>
<H2>SEE ALSO</H2>
<I>GAWK: Effective AWK Programming</I>,
<I>filefuncs</I>(3am),
<I>fnmatch</I>(3am),
<I>fork</I>(3am),
<I>inplace</I>(3am),
<I>ordchr</I>(3am),
<I>readdir</I>(3am),
<I>readfile</I>(3am),
<I>revoutput</I>(3am),
<I>rwarray</I>(3am).
<P>
<I><A HREF="/cgi-bin/man/man2html?2+gettimeofday">gettimeofday</A></I>(2),
<I><A HREF="/cgi-bin/man/man2html?2+nanosleep">nanosleep</A></I>(2),
<I><A HREF="/cgi-bin/man/man2html?2+select">select</A></I>(2).
<A NAME="lbAG">&nbsp;</A>
<H2>AUTHOR</H2>
Arnold Robbins,
<B><A HREF="mailto:arnold@skeeve.com">arnold@skeeve.com</A></B>.
<A NAME="lbAH">&nbsp;</A>
<H2>COPYING PERMISSIONS</H2>
Copyright &#169; 2012, 2013, 2018,
Free Software Foundation, Inc.
<P>
Permission is granted to make and distribute verbatim copies of
this manual page provided the copyright notice and this permission
notice are preserved on all copies.
<P>
Permission is granted to copy and distribute modified versions of this
manual page under the conditions for verbatim copying, provided that
the entire resulting derived work is distributed under the terms of a
permission notice identical to this one.
<P>
Permission is granted to copy and distribute translations of this
manual page into another language, under the above conditions for
modified versions, except that this permission notice may be stated in
a translation approved by the Foundation.
<P>
<HR>
<A NAME="index">&nbsp;</A><H2>Index</H2>
<DL>
<DT id="3"><A HREF="#lbAB">NAME</A><DD>
<DT id="4"><A HREF="#lbAC">SYNOPSIS</A><DD>
<DT id="5"><A HREF="#lbAD">DESCRIPTION</A><DD>
<DT id="6"><A HREF="#lbAE">EXAMPLE</A><DD>
<DT id="7"><A HREF="#lbAF">SEE ALSO</A><DD>
<DT id="8"><A HREF="#lbAG">AUTHOR</A><DD>
<DT id="9"><A HREF="#lbAH">COPYING PERMISSIONS</A><DD>
</DL>
<HR>
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