aarch64-linux-gnu-4.9/share/doc/gdb/gdb/Edit.html - toolchains/linux-x86/gcc - Git at Google

 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
 <html>
 <!-- Copyright (C) 1988-2015 Free Software Foundation, Inc.

 Permission is granted to copy, distribute and/or modify this document
 under the terms of the GNU Free Documentation License, Version 1.3 or
 any later version published by the Free Software Foundation; with the
 Invariant Sections being "Free Software" and "Free Software Needs
 Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
 and with the Back-Cover Texts as in (a) below.

 (a) The FSF's Back-Cover Text is: "You are free to copy and modify
 this GNU Manual.  Buying copies from GNU Press supports the FSF in
 developing GNU and promoting software freedom." -->
 <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
 <head>
 <title>Debugging with GDB: Edit</title>

 <meta name="description" content="Debugging with GDB: Edit">
 <meta name="keywords" content="Debugging with GDB: Edit">
 <meta name="resource-type" content="document">
 <meta name="distribution" content="global">
 <meta name="Generator" content="makeinfo">
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <link href="index.html#Top" rel="start" title="Top">
 <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
 <link href="Source.html#Source" rel="up" title="Source">
 <link href="Search.html#Search" rel="next" title="Search">
 <link href="Specify-Location.html#Specify-Location" rel="prev" title="Specify Location">
 <style type="text/css">
 <!--
 a.summary-letter {text-decoration: none}
 blockquote.smallquotation {font-size: smaller}
 div.display {margin-left: 3.2em}
 div.example {margin-left: 3.2em}
 div.indentedblock {margin-left: 3.2em}
 div.lisp {margin-left: 3.2em}
 div.smalldisplay {margin-left: 3.2em}
 div.smallexample {margin-left: 3.2em}
 div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
 div.smalllisp {margin-left: 3.2em}
 kbd {font-style:oblique}
 pre.display {font-family: inherit}
 pre.format {font-family: inherit}
 pre.menu-comment {font-family: serif}
 pre.menu-preformatted {font-family: serif}
 pre.smalldisplay {font-family: inherit; font-size: smaller}
 pre.smallexample {font-size: smaller}
 pre.smallformat {font-family: inherit; font-size: smaller}
 pre.smalllisp {font-size: smaller}
 span.nocodebreak {white-space:nowrap}
 span.nolinebreak {white-space:nowrap}
 span.roman {font-family:serif; font-weight:normal}
 span.sansserif {font-family:sans-serif; font-weight:normal}
 ul.no-bullet {list-style: none}
 -->
 </style>


 </head>

 <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
 <a name="Edit"></a>
 <div class="header">
 <p>
 Next: <a href="Search.html#Search" accesskey="n" rel="next">Search</a>, Previous: <a href="Specify-Location.html#Specify-Location" accesskey="p" rel="prev">Specify Location</a>, Up: <a href="Source.html#Source" accesskey="u" rel="up">Source</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
 </div>
 <hr>
 <a name="Editing-Source-Files"></a>
 <h3 class="section">9.3 Editing Source Files</h3>
 <a name="index-editing-source-files"></a>

 <a name="index-edit"></a>
 <a name="index-e-_0028edit_0029"></a>
 <p>To edit the lines in a source file, use the <code>edit</code> command.
 The editing program of your choice
 is invoked with the current line set to
 the active line in the program.
 Alternatively, there are several ways to specify what part of the file you
 want to print if you want to see other parts of the program:
 </p>
 <dl compact="compact">
 <dt><code>edit <var>location</var></code></dt>
 <dd><p>Edit the source file specified by <code>location</code>.  Editing starts at
 that <var>location</var>, e.g., at the specified source line of the
 specified file.  See <a href="Specify-Location.html#Specify-Location">Specify Location</a>, for all the possible forms
 of the <var>location</var> argument; here are the forms of the <code>edit</code>
 command most commonly used:
 </p>
 <dl compact="compact">
 <dt><code>edit <var>number</var></code></dt>
 <dd><p>Edit the current source file with <var>number</var> as the active line number.
 </p>
 </dd>
 <dt><code>edit <var>function</var></code></dt>
 <dd><p>Edit the file containing <var>function</var> at the beginning of its definition.
 </p></dd>
 </dl>

 </dd>
 </dl>

 <a name="Choosing-your-Editor"></a>
 <h4 class="subsection">9.3.1 Choosing your Editor</h4>
 <p>You can customize <small>GDB</small> to use any editor you want
 <a name="DOCF9" href="#FOOT9"><sup>9</sup></a>.
 By default, it is <samp>/bin/ex</samp>, but you can change this
 by setting the environment variable <code>EDITOR</code> before using
 <small>GDB</small>.  For example, to configure <small>GDB</small> to use the
 <code>vi</code> editor, you could use these commands with the <code>sh</code> shell:
 </p><div class="smallexample">
 <pre class="smallexample">EDITOR=/usr/bin/vi
 export EDITOR
 gdb &hellip;
 </pre></div>
 <p>or in the <code>csh</code> shell,
 </p><div class="smallexample">
 <pre class="smallexample">setenv EDITOR /usr/bin/vi
 gdb &hellip;
 </pre></div>

 <div class="footnote">
 <hr>
 <h4 class="footnotes-heading">Footnotes</h4>

 <h3><a name="FOOT9" href="#DOCF9">(9)</a></h3>
 <p>The only restriction is that your editor (say <code>ex</code>), recognizes the
 following command-line syntax:
 </p><div class="smallexample">
 <pre class="smallexample">ex +<var>number</var> file
 </pre></div>
 <p>The optional numeric value +<var>number</var> specifies the number of the line in
 the file where to start editing.</p>
 </div>


 </body>
 </html>
	<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
	<html>
	<!-- Copyright (C) 1988-2015 Free Software Foundation, Inc.

	Permission is granted to copy, distribute and/or modify this document
	under the terms of the GNU Free Documentation License, Version 1.3 or
	any later version published by the Free Software Foundation; with the
	Invariant Sections being "Free Software" and "Free Software Needs
	Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
	and with the Back-Cover Texts as in (a) below.

	(a) The FSF's Back-Cover Text is: "You are free to copy and modify
	this GNU Manual. Buying copies from GNU Press supports the FSF in
	developing GNU and promoting software freedom." -->
	<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
	<head>
	<title>Debugging with GDB: Edit</title>

	<meta name="description" content="Debugging with GDB: Edit">
	<meta name="keywords" content="Debugging with GDB: Edit">
	<meta name="resource-type" content="document">
	<meta name="distribution" content="global">
	<meta name="Generator" content="makeinfo">
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
	<link href="index.html#Top" rel="start" title="Top">
	<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
	<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
	<link href="Source.html#Source" rel="up" title="Source">
	<link href="Search.html#Search" rel="next" title="Search">
	<link href="Specify-Location.html#Specify-Location" rel="prev" title="Specify Location">
	<style type="text/css">
	<!--
	a.summary-letter {text-decoration: none}
	blockquote.smallquotation {font-size: smaller}
	div.display {margin-left: 3.2em}
	div.example {margin-left: 3.2em}
	div.indentedblock {margin-left: 3.2em}
	div.lisp {margin-left: 3.2em}
	div.smalldisplay {margin-left: 3.2em}
	div.smallexample {margin-left: 3.2em}
	div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
	div.smalllisp {margin-left: 3.2em}
	kbd {font-style:oblique}
	pre.display {font-family: inherit}
	pre.format {font-family: inherit}
	pre.menu-comment {font-family: serif}
	pre.menu-preformatted {font-family: serif}
	pre.smalldisplay {font-family: inherit; font-size: smaller}
	pre.smallexample {font-size: smaller}
	pre.smallformat {font-family: inherit; font-size: smaller}
	pre.smalllisp {font-size: smaller}
	span.nocodebreak {white-space:nowrap}
	span.nolinebreak {white-space:nowrap}
	span.roman {font-family:serif; font-weight:normal}
	span.sansserif {font-family:sans-serif; font-weight:normal}
	ul.no-bullet {list-style: none}
	-->
	</style>


	</head>

	<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
	<a name="Edit"></a>
	<div class="header">
	<p>
	Next: <a href="Search.html#Search" accesskey="n" rel="next">Search</a>, Previous: <a href="Specify-Location.html#Specify-Location" accesskey="p" rel="prev">Specify Location</a>, Up: <a href="Source.html#Source" accesskey="u" rel="up">Source</a>   [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
	</div>
	<hr>
	<a name="Editing-Source-Files"></a>
	<h3 class="section">9.3 Editing Source Files</h3>
	<a name="index-editing-source-files"></a>

	<a name="index-edit"></a>
	<a name="index-e-_0028edit_0029"></a>
	<p>To edit the lines in a source file, use the <code>edit</code> command.
	The editing program of your choice
	is invoked with the current line set to
	the active line in the program.
	Alternatively, there are several ways to specify what part of the file you
	want to print if you want to see other parts of the program:
	</p>
	<dl compact="compact">
	<dt><code>edit <var>location</var></code></dt>
	<dd><p>Edit the source file specified by <code>location</code>. Editing starts at
	that <var>location</var>, e.g., at the specified source line of the
	specified file. See <a href="Specify-Location.html#Specify-Location">Specify Location</a>, for all the possible forms
	of the <var>location</var> argument; here are the forms of the <code>edit</code>
	command most commonly used:
	</p>
	<dl compact="compact">
	<dt><code>edit <var>number</var></code></dt>
	<dd><p>Edit the current source file with <var>number</var> as the active line number.
	</p>
	</dd>
	<dt><code>edit <var>function</var></code></dt>
	<dd><p>Edit the file containing <var>function</var> at the beginning of its definition.
	</p></dd>
	</dl>

	</dd>
	</dl>

	<a name="Choosing-your-Editor"></a>
	<h4 class="subsection">9.3.1 Choosing your Editor</h4>
	<p>You can customize <small>GDB</small> to use any editor you want
	<a name="DOCF9" href="#FOOT9"><sup>9</sup></a>.
	By default, it is <samp>/bin/ex</samp>, but you can change this
	by setting the environment variable <code>EDITOR</code> before using
	<small>GDB</small>. For example, to configure <small>GDB</small> to use the
	<code>vi</code> editor, you could use these commands with the <code>sh</code> shell:
	</p><div class="smallexample">
	<pre class="smallexample">EDITOR=/usr/bin/vi
	export EDITOR
	gdb …
	</pre></div>
	<p>or in the <code>csh</code> shell,
	</p><div class="smallexample">
	<pre class="smallexample">setenv EDITOR /usr/bin/vi
	gdb …
	</pre></div>

	<div class="footnote">
	<hr>
	<h4 class="footnotes-heading">Footnotes</h4>

	<h3><a name="FOOT9" href="#DOCF9">(9)</a></h3>
	<p>The only restriction is that your editor (say <code>ex</code>), recognizes the
	following command-line syntax:
	</p><div class="smallexample">
	<pre class="smallexample">ex +<var>number</var> file
	</pre></div>
	<p>The optional numeric value +<var>number</var> specifies the number of the line in
	the file where to start editing.</p>
	</div>



	</body>
	</html>