diff options
Diffstat (limited to 'share/doc/gdb/Input_002fOutput.html')
| -rw-r--r-- | share/doc/gdb/Input_002fOutput.html | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/share/doc/gdb/Input_002fOutput.html b/share/doc/gdb/Input_002fOutput.html new file mode 100644 index 0000000..cfdf8c6 --- /dev/null +++ b/share/doc/gdb/Input_002fOutput.html @@ -0,0 +1,154 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> +<html> +<!-- Copyright (C) 1988-2023 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 5.1, http://www.gnu.org/software/texinfo/ --> +<head> +<title>Debugging with GDB: Input/Output</title> + +<meta name="description" content="Debugging with GDB: Input/Output"> +<meta name="keywords" content="Debugging with GDB: Input/Output"> +<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="Running.html#Running" rel="up" title="Running"> +<link href="Attach.html#Attach" rel="next" title="Attach"> +<link href="Working-Directory.html#Working-Directory" rel="previous" title="Working Directory"> +<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="Input_002fOutput"></a> +<div class="header"> +<p> +Next: <a href="Attach.html#Attach" accesskey="n" rel="next">Attach</a>, Previous: <a href="Working-Directory.html#Working-Directory" accesskey="p" rel="previous">Working Directory</a>, Up: <a href="Running.html#Running" accesskey="u" rel="up">Running</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="Your-Program_0027s-Input-and-Output"></a> +<h3 class="section">4.6 Your Program’s Input and Output</h3> + +<a name="index-redirection"></a> +<a name="index-i_002fo"></a> +<a name="index-terminal"></a> +<p>By default, the program you run under <small>GDB</small> does input and output to +the same terminal that <small>GDB</small> uses. <small>GDB</small> switches the terminal +to its own terminal modes to interact with you, but it records the terminal +modes your program was using and switches back to them when you continue +running your program. +</p> +<dl compact="compact"> +<dd><a name="index-info-terminal"></a> +</dd> +<dt><code>info terminal</code></dt> +<dd><p>Displays information recorded by <small>GDB</small> about the terminal modes your +program is using. +</p></dd> +</dl> + +<p>You can redirect your program’s input and/or output using shell +redirection with the <code>run</code> command. For example, +</p> +<div class="smallexample"> +<pre class="smallexample">run > outfile +</pre></div> + +<p>starts your program, diverting its output to the file <samp>outfile</samp>. +</p> +<a name="index-tty"></a> +<a name="index-controlling-terminal"></a> +<p>Another way to specify where your program should do input and output is +with the <code>tty</code> command. This command accepts a file name as +argument, and causes this file to be the default for future <code>run</code> +commands. It also resets the controlling terminal for the child +process, for future <code>run</code> commands. For example, +</p> +<div class="smallexample"> +<pre class="smallexample">tty /dev/ttyb +</pre></div> + +<p>directs that processes started with subsequent <code>run</code> commands +default to do input and output on the terminal <samp>/dev/ttyb</samp> and have +that as their controlling terminal. +</p> +<p>An explicit redirection in <code>run</code> overrides the <code>tty</code> command’s +effect on the input/output device, but not its effect on the controlling +terminal. +</p> +<p>When you use the <code>tty</code> command or redirect input in the <code>run</code> +command, only the input <em>for your program</em> is affected. The input +for <small>GDB</small> still comes from your terminal. <code>tty</code> is an alias +for <code>set inferior-tty</code>. +</p> +<a name="index-inferior-tty"></a> +<a name="index-set-inferior-controlling-terminal"></a> +<p>You can use the <code>show inferior-tty</code> command to tell <small>GDB</small> to +display the name of the terminal that will be used for future runs of your +program. +</p> +<dl compact="compact"> +<dt><code>set inferior-tty [ <var>tty</var> ]</code></dt> +<dd><a name="index-set-inferior_002dtty"></a> +<p>Set the tty for the program being debugged to <var>tty</var>. Omitting <var>tty</var> +restores the default behavior, which is to use the same terminal as +<small>GDB</small>. +</p> +</dd> +<dt><code>show inferior-tty</code></dt> +<dd><a name="index-show-inferior_002dtty"></a> +<p>Show the current tty for the program being debugged. +</p></dd> +</dl> + +<hr> +<div class="header"> +<p> +Next: <a href="Attach.html#Attach" accesskey="n" rel="next">Attach</a>, Previous: <a href="Working-Directory.html#Working-Directory" accesskey="p" rel="previous">Working Directory</a>, Up: <a href="Running.html#Running" accesskey="u" rel="up">Running</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> + + + +</body> +</html> |