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111 lines
4.7 KiB
HTML
111 lines
4.7 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>Arguments (Debugging with GDB)</title>
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<meta name="description" content="Arguments (Debugging with GDB)">
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<meta name="keywords" content="Arguments (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="Running.html#Running" rel="up" title="Running">
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<link href="Environment.html#Environment" rel="next" title="Environment">
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<link href="Starting.html#Starting" rel="prev" title="Starting">
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<style type="text/css">
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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="Arguments"></a>
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<div class="header">
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<p>
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Next: <a href="Environment.html#Environment" accesskey="n" rel="next">Environment</a>, Previous: <a href="Starting.html#Starting" accesskey="p" rel="prev">Starting</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>
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</div>
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<hr>
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<a name="Your-Program_0027s-Arguments"></a>
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<h3 class="section">4.3 Your Program’s Arguments</h3>
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<a name="index-arguments-_0028to-your-program_0029"></a>
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<p>The arguments to your program can be specified by the arguments of the
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<code>run</code> command.
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They are passed to a shell, which expands wildcard characters and
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performs redirection of I/O, and thence to your program. Your
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<code>SHELL</code> environment variable (if it exists) specifies what shell
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<small>GDB</small> uses. If you do not define <code>SHELL</code>, <small>GDB</small> uses
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the default shell (<samp>/bin/sh</samp> on Unix).
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</p>
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<p>On non-Unix systems, the program is usually invoked directly by
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<small>GDB</small>, which emulates I/O redirection via the appropriate system
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calls, and the wildcard characters are expanded by the startup code of
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the program, not by the shell.
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</p>
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<p><code>run</code> with no arguments uses the same arguments used by the previous
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<code>run</code>, or those set by the <code>set args</code> command.
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</p>
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<dl compact="compact">
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<dd><a name="index-set-args"></a>
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</dd>
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<dt><code>set args</code></dt>
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<dd><p>Specify the arguments to be used the next time your program is run. If
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<code>set args</code> has no arguments, <code>run</code> executes your program
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with no arguments. Once you have run your program with arguments,
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using <code>set args</code> before the next <code>run</code> is the only way to run
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it again without arguments.
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</p>
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<a name="index-show-args"></a>
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</dd>
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<dt><code>show args</code></dt>
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<dd><p>Show the arguments to give your program when it is started.
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</p></dd>
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</dl>
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</body>
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</html>
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