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144 lines
6.6 KiB
HTML
144 lines
6.6 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Screen Size (Debugging with GDB)</title>
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<meta name="description" content="Screen Size (Debugging with GDB)">
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<meta name="keywords" content="Screen Size (Debugging with GDB)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Controlling-GDB.html#Controlling-GDB" rel="up" title="Controlling GDB">
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<link href="Output-Styling.html#Output-Styling" rel="next" title="Output Styling">
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<link href="Command-History.html#Command-History" rel="prev" title="Command History">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.indentedblock {margin-right: 0em}
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blockquote.smallindentedblock {margin-right: 0em; font-size: smaller}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Screen-Size"></a>
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<div class="header">
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<p>
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Next: <a href="Output-Styling.html#Output-Styling" accesskey="n" rel="next">Output Styling</a>, Previous: <a href="Command-History.html#Command-History" accesskey="p" rel="prev">Command History</a>, Up: <a href="Controlling-GDB.html#Controlling-GDB" accesskey="u" rel="up">Controlling GDB</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>
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</div>
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<hr>
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<a name="Screen-Size-1"></a>
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<h3 class="section">22.4 Screen Size</h3>
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<a name="index-size-of-screen"></a>
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<a name="index-screen-size"></a>
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<a name="index-pagination"></a>
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<a name="index-page-size"></a>
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<a name="index-pauses-in-output"></a>
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<p>Certain commands to <small>GDB</small> may produce large amounts of
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information output to the screen. To help you read all of it,
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<small>GDB</small> pauses and asks you for input at the end of each page of
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output. Type <tt class="key">RET</tt> when you want to see one more page of output,
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<kbd>q</kbd> to discard the remaining output, or <kbd>c</kbd> to continue
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without paging for the rest of the current command. Also, the screen
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width setting determines when to wrap lines of output. Depending on
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what is being printed, <small>GDB</small> tries to break the line at a
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readable place, rather than simply letting it overflow onto the
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following line.
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</p>
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<p>Normally <small>GDB</small> knows the size of the screen from the terminal
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driver software. For example, on Unix <small>GDB</small> uses the termcap data base
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together with the value of the <code>TERM</code> environment variable and the
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<code>stty rows</code> and <code>stty cols</code> settings. If this is not correct,
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you can override it with the <code>set height</code> and <code>set
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width</code> commands:
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</p>
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<dl compact="compact">
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<dd><a name="index-set-height"></a>
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<a name="index-set-width"></a>
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<a name="index-show-width"></a>
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<a name="index-show-height"></a>
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</dd>
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<dt><code>set height <var>lpp</var></code></dt>
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<dt><code>set height unlimited</code></dt>
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<dt><code>show height</code></dt>
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<dt><code>set width <var>cpl</var></code></dt>
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<dt><code>set width unlimited</code></dt>
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<dt><code>show width</code></dt>
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<dd><p>These <code>set</code> commands specify a screen height of <var>lpp</var> lines and
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a screen width of <var>cpl</var> characters. The associated <code>show</code>
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commands display the current settings.
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</p>
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<p>If you specify a height of either <code>unlimited</code> or zero lines,
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<small>GDB</small> does not pause during output no matter how long the
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output is. This is useful if output is to a file or to an editor
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buffer.
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</p>
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<p>Likewise, you can specify ‘<samp>set width unlimited</samp>’ or ‘<samp>set
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width 0</samp>’ to prevent <small>GDB</small> from wrapping its output.
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</p>
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</dd>
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<dt><code>set pagination on</code></dt>
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<dt><code>set pagination off</code></dt>
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<dd><a name="index-set-pagination"></a>
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<p>Turn the output pagination on or off; the default is on. Turning
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pagination off is the alternative to <code>set height unlimited</code>. Note that
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running <small>GDB</small> with the <samp>--batch</samp> option (see <a href="Mode-Options.html#Mode-Options">-batch</a>) also automatically disables pagination.
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</p>
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</dd>
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<dt><code>show pagination</code></dt>
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<dd><a name="index-show-pagination"></a>
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<p>Show the current pagination mode.
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</p></dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Output-Styling.html#Output-Styling" accesskey="n" rel="next">Output Styling</a>, Previous: <a href="Command-History.html#Command-History" accesskey="p" rel="prev">Command History</a>, Up: <a href="Controlling-GDB.html#Controlling-GDB" accesskey="u" rel="up">Controlling GDB</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>
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</div>
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</body>
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</html>
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