| <html lang="en"> |
| <head> |
| <title>Startup - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Invoking-GDB.html#Invoking-GDB" title="Invoking GDB"> |
| <link rel="prev" href="Mode-Options.html#Mode-Options" title="Mode Options"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 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.''--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Startup"></a> |
| <p> |
| Previous: <a rel="previous" accesskey="p" href="Mode-Options.html#Mode-Options">Mode Options</a>, |
| Up: <a rel="up" accesskey="u" href="Invoking-GDB.html#Invoking-GDB">Invoking GDB</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">2.1.3 What <span class="sc">gdb</span> Does During Startup</h4> |
| |
| <p><a name="index-g_t_0040value_007bGDBN_007d-startup-49"></a> |
| Here's the description of what <span class="sc">gdb</span> does during session startup: |
| |
| <ol type=1 start=1> |
| <li>Sets up the command interpreter as specified by the command line |
| (see <a href="Mode-Options.html#Mode-Options">interpreter</a>). |
| |
| <li><a name="index-init-file-50"></a>Reads the system-wide <dfn>init file</dfn> (if <samp><span class="option">--with-system-gdbinit</span></samp> was |
| used when building <span class="sc">gdb</span>; see <a href="System_002dwide-configuration.html#System_002dwide-configuration">System-wide configuration and settings</a>) and executes all the commands in |
| that file. |
| |
| <li>Reads the init file (if any) in your home directory<a rel="footnote" href="#fn-1" name="fnd-1"><sup>1</sup></a> and executes all the commands in |
| that file. |
| |
| <li>Processes command line options and operands. |
| |
| <li>Reads and executes the commands from init file (if any) in the current |
| working directory. This is only done if the current directory is |
| different from your home directory. Thus, you can have more than one |
| init file, one generic in your home directory, and another, specific |
| to the program you are debugging, in the directory where you invoke |
| <span class="sc">gdb</span>. |
| |
| <li>Reads command files specified by the ‘<samp><span class="samp">-x</span></samp>’ option. See <a href="Command-Files.html#Command-Files">Command Files</a>, for more details about <span class="sc">gdb</span> command files. |
| |
| <li>Reads the command history recorded in the <dfn>history file</dfn>. |
| See <a href="Command-History.html#Command-History">Command History</a>, for more details about the command history and the |
| files where <span class="sc">gdb</span> records it. |
| </ol> |
| |
| <p>Init files use the same syntax as <dfn>command files</dfn> (see <a href="Command-Files.html#Command-Files">Command Files</a>) and are processed by <span class="sc">gdb</span> in the same way. The init |
| file in your home directory can set options (such as ‘<samp><span class="samp">set |
| complaints</span></samp>’) that affect subsequent processing of command line options |
| and operands. Init files are not executed if you use the ‘<samp><span class="samp">-nx</span></samp>’ |
| option (see <a href="Mode-Options.html#Mode-Options">Choosing Modes</a>). |
| |
| <p>To display the list of init files loaded by gdb at startup, you |
| can use <kbd>gdb --help</kbd>. |
| |
| <p><a name="index-init-file-name-51"></a><a name="index-g_t_0040file_007b_002egdbinit_007d-52"></a><a name="index-g_t_0040file_007bgdb_002eini_007d-53"></a>The <span class="sc">gdb</span> init files are normally called <samp><span class="file">.gdbinit</span></samp>. |
| The DJGPP port of <span class="sc">gdb</span> uses the name <samp><span class="file">gdb.ini</span></samp>, due to |
| the limitations of file names imposed by DOS filesystems. The Windows |
| ports of <span class="sc">gdb</span> use the standard name, but if they find a |
| <samp><span class="file">gdb.ini</span></samp> file, they warn you about that and suggest to rename |
| the file to the standard name. |
| |
| <div class="footnote"> |
| <hr> |
| <h4>Footnotes</h4><p class="footnote"><small>[<a name="fn-1" href="#fnd-1">1</a>]</small> On |
| DOS/Windows systems, the home directory is the one pointed to by the |
| <code>HOME</code> environment variable.</p> |
| |
| <hr></div> |
| |
| </body></html> |
| |