262 lines
6.9 KiB
HTML
262 lines
6.9 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
|
|
<html>
|
|
<head>
|
|
<meta name="generator" content="HTML Tidy, see www.w3.org">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
|
|
<link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 -->
|
|
<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
|
|
<title>what</title>
|
|
</head>
|
|
<body bgcolor="white">
|
|
<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
|
|
</script>
|
|
|
|
<basefont size="3"> <a name="what"></a> <a name="tag_04_170"></a><!-- what -->
|
|
<!--header start-->
|
|
<center><font size="2">The Open Group Base Specifications Issue 6<br>
|
|
IEEE Std 1003.1-2001<br>
|
|
Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
|
|
|
|
<!--header end-->
|
|
<hr size="2" noshade>
|
|
<h4><a name="tag_04_170_01"></a>NAME</h4>
|
|
|
|
<blockquote>what - identify SCCS files (<b>DEVELOPMENT</b>)</blockquote>
|
|
|
|
<h4><a name="tag_04_170_02"></a>SYNOPSIS</h4>
|
|
|
|
<blockquote class="synopsis">
|
|
<div class="box"><code><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt=
|
|
"[Option Start]" border="0"> what</tt> <b>[</b><tt>-s</tt><b>]</b> <i>file</i><tt>... <img src="../images/opt-end.gif" alt=
|
|
"[Option End]" border="0"></tt></code></div>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_03"></a>DESCRIPTION</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>what</i> utility shall search the given files for all occurrences of the pattern that <a href=
|
|
"../utilities/get.html"><i>get</i></a> (see <a href="get.html"><i>get</i></a> ) substitutes for the %<b>Z</b>% keyword (
|
|
<tt>"@(#)"</tt> ) and shall write to standard output what follows until the first occurrence of one of the following:</p>
|
|
|
|
<pre>
|
|
<tt>" > newline \ NUL
|
|
</tt>
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_04"></a>OPTIONS</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>what</i> utility shall conform to the Base Definitions volume of IEEE Std 1003.1-2001, <a href=
|
|
"../basedefs/xbd_chap12.html#tag_12_02">Section 12.2, Utility Syntax Guidelines</a>.</p>
|
|
|
|
<p>The following option shall be supported:</p>
|
|
|
|
<dl compact>
|
|
<dt><b>-s</b></dt>
|
|
|
|
<dd>Quit after finding the first occurrence of the pattern in each file.</dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_05"></a>OPERANDS</h4>
|
|
|
|
<blockquote>
|
|
<p>The following operands shall be supported:</p>
|
|
|
|
<dl compact>
|
|
<dt><i>file</i></dt>
|
|
|
|
<dd>A pathname of a file to search.</dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_06"></a>STDIN</h4>
|
|
|
|
<blockquote>
|
|
<p>Not used.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_07"></a>INPUT FILES</h4>
|
|
|
|
<blockquote>
|
|
<p>The input files shall be of any file type.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_08"></a>ENVIRONMENT VARIABLES</h4>
|
|
|
|
<blockquote>
|
|
<p>The following environment variables shall affect the execution of <i>what</i>:</p>
|
|
|
|
<dl compact>
|
|
<dt><i>LANG</i></dt>
|
|
|
|
<dd>Provide a default value for the internationalization variables that are unset or null. (See the Base Definitions volume of
|
|
IEEE Std 1003.1-2001, <a href="../basedefs/xbd_chap08.html#tag_08_02">Section 8.2, Internationalization Variables</a> for
|
|
the precedence of internationalization variables used to determine the values of locale categories.)</dd>
|
|
|
|
<dt><i>LC_ALL</i></dt>
|
|
|
|
<dd>If set to a non-empty string value, override the values of all the other internationalization variables.</dd>
|
|
|
|
<dt><i>LC_CTYPE</i></dt>
|
|
|
|
<dd>Determine the locale for the interpretation of sequences of bytes of text data as characters (for example, single-byte as
|
|
opposed to multi-byte characters in arguments and input files).</dd>
|
|
|
|
<dt><i>LC_MESSAGES</i></dt>
|
|
|
|
<dd>Determine the locale that should be used to affect the format and contents of diagnostic messages written to standard
|
|
error.</dd>
|
|
|
|
<dt><i>NLSPATH</i></dt>
|
|
|
|
<dd>Determine the location of message catalogs for the processing of <i>LC_MESSAGES .</i></dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_09"></a>ASYNCHRONOUS EVENTS</h4>
|
|
|
|
<blockquote>
|
|
<p>Default.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_10"></a>STDOUT</h4>
|
|
|
|
<blockquote>
|
|
<p>The standard output shall consist of the following for each <i>file</i> operand:</p>
|
|
|
|
<pre>
|
|
<tt>"%s:\n\t%s\n", <</tt><i>pathname</i><tt>>, <</tt><i>identification string</i><tt>>
|
|
</tt>
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_11"></a>STDERR</h4>
|
|
|
|
<blockquote>
|
|
<p>The standard error shall be used only for diagnostic messages.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_12"></a>OUTPUT FILES</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_13"></a>EXTENDED DESCRIPTION</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_14"></a>EXIT STATUS</h4>
|
|
|
|
<blockquote>
|
|
<p>The following exit values shall be returned:</p>
|
|
|
|
<dl compact>
|
|
<dt>0</dt>
|
|
|
|
<dd>Any matches were found.</dd>
|
|
|
|
<dt>1</dt>
|
|
|
|
<dd>Otherwise.</dd>
|
|
</dl>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_15"></a>CONSEQUENCES OF ERRORS</h4>
|
|
|
|
<blockquote>
|
|
<p>Default.</p>
|
|
</blockquote>
|
|
|
|
<hr>
|
|
<div class="box"><em>The following sections are informative.</em></div>
|
|
|
|
<h4><a name="tag_04_170_16"></a>APPLICATION USAGE</h4>
|
|
|
|
<blockquote>
|
|
<p>The <i>what</i> utility is intended to be used in conjunction with the SCCS command <a href=
|
|
"../utilities/get.html"><i>get</i></a>, which automatically inserts identifying information, but it can also be used where the
|
|
information is inserted by any other means.</p>
|
|
|
|
<p>When the string <tt>"@(#)"</tt> is included in a library routine in a shared library, it might not be found in an <b>a.out</b>
|
|
file using that library routine.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_17"></a>EXAMPLES</h4>
|
|
|
|
<blockquote>
|
|
<p>If the C-language program in file <b>f.c</b> contains:</p>
|
|
|
|
<pre>
|
|
<tt>char ident[] = "@(#)identification information";
|
|
</tt>
|
|
</pre>
|
|
|
|
<p>and <b>f.c</b> is compiled to yield <b>f.o</b> and <b>a.out</b>, then the command:</p>
|
|
|
|
<pre>
|
|
<tt>what f.c f.o a.out
|
|
</tt>
|
|
</pre>
|
|
|
|
<p>writes:</p>
|
|
|
|
<pre>
|
|
<tt>f.c:
|
|
identification information
|
|
...
|
|
f.o:
|
|
identification information
|
|
...
|
|
a.out:
|
|
identification information
|
|
...
|
|
</tt>
|
|
</pre>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_18"></a>RATIONALE</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_19"></a>FUTURE DIRECTIONS</h4>
|
|
|
|
<blockquote>
|
|
<p>None.</p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_20"></a>SEE ALSO</h4>
|
|
|
|
<blockquote>
|
|
<p><a href="get.html"><i>get</i></a></p>
|
|
</blockquote>
|
|
|
|
<h4><a name="tag_04_170_21"></a>CHANGE HISTORY</h4>
|
|
|
|
<blockquote>
|
|
<p>First released in Issue 2.</p>
|
|
</blockquote>
|
|
|
|
<div class="box"><em>End of informative text.</em></div>
|
|
|
|
<hr>
|
|
<hr size="2" noshade>
|
|
<center><font size="2"><!--footer start-->
|
|
UNIX ® is a registered Trademark of The Open Group.<br>
|
|
POSIX ® is a registered Trademark of The IEEE.<br>
|
|
[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href=
|
|
"../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>
|
|
]</font></center>
|
|
|
|
<!--footer end-->
|
|
<hr size="2" noshade>
|
|
</body>
|
|
</html>
|
|
|