1<html lang="en"> 2<head> 3<title>Screen Size - Debugging with GDB</title> 4<meta http-equiv="Content-Type" content="text/html"> 5<meta name="description" content="Debugging with GDB"> 6<meta name="generator" content="makeinfo 4.13"> 7<link title="Top" rel="start" href="index.html#Top"> 8<link rel="up" href="Controlling-GDB.html#Controlling-GDB" title="Controlling GDB"> 9<link rel="prev" href="Command-History.html#Command-History" title="Command History"> 10<link rel="next" href="Numbers.html#Numbers" title="Numbers"> 11<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> 12<!-- 13Copyright (C) 1988-2013 Free Software Foundation, Inc. 14 15Permission is granted to copy, distribute and/or modify this document 16under the terms of the GNU Free Documentation License, Version 1.3 or 17any later version published by the Free Software Foundation; with the 18Invariant Sections being ``Free Software'' and ``Free Software Needs 19Free Documentation'', with the Front-Cover Texts being ``A GNU Manual,'' 20and with the Back-Cover Texts as in (a) below. 21 22(a) The FSF's Back-Cover Text is: ``You are free to copy and modify 23this GNU Manual. 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To help you read all of it, 55<span class="sc">gdb</span> pauses and asks you for input at the end of each page of 56output. Type <RET> when you want to continue the output, or <kbd>q</kbd> 57to discard the remaining output. Also, the screen width setting 58determines when to wrap lines of output. Depending on what is being 59printed, <span class="sc">gdb</span> tries to break the line at a readable place, 60rather than simply letting it overflow onto the following line. 61 62 <p>Normally <span class="sc">gdb</span> knows the size of the screen from the terminal 63driver software. For example, on Unix <span class="sc">gdb</span> uses the termcap data base 64together with the value of the <code>TERM</code> environment variable and the 65<code>stty rows</code> and <code>stty cols</code> settings. If this is not correct, 66you can override it with the <code>set height</code> and <code>set 67width</code> commands: 68 69 70<a name="index-set-height-1575"></a> 71<a name="index-set-width-1576"></a> 72<a name="index-show-width-1577"></a> 73<a name="index-show-height-1578"></a> 74<dl><dt><code>set height </code><var>lpp</var><dt><code>set height unlimited</code><dt><code>show height</code><dt><code>set width </code><var>cpl</var><dt><code>set width unlimited</code><dt><code>show width</code><dd>These <code>set</code> commands specify a screen height of <var>lpp</var> lines and 75a screen width of <var>cpl</var> characters. The associated <code>show</code> 76commands display the current settings. 77 78 <p>If you specify a height of either <code>unlimited</code> or zero lines, 79<span class="sc">gdb</span> does not pause during output no matter how long the 80output is. This is useful if output is to a file or to an editor 81buffer. 82 83 <p>Likewise, you can specify ‘<samp><span class="samp">set width unlimited</span></samp>’ or ‘<samp><span class="samp">set 84width 0</span></samp>’ to prevent <span class="sc">gdb</span> from wrapping its output. 85 86 <br><dt><code>set pagination on</code><dt><code>set pagination off</code><dd><a name="index-set-pagination-1579"></a>Turn the output pagination on or off; the default is on. Turning 87pagination off is the alternative to <code>set height unlimited</code>. Note that 88running <span class="sc">gdb</span> with the <samp><span class="option">--batch</span></samp> option (see <a href="Mode-Options.html#Mode-Options">-batch</a>) also automatically disables pagination. 89 90 <br><dt><code>show pagination</code><dd><a name="index-show-pagination-1580"></a>Show the current pagination mode. 91</dl> 92 93 </body></html> 94 95