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4.3 KiB
HTML
94 lines
4.3 KiB
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<html lang="en">
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<head>
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<title>Prompt - Debugging with GDB</title>
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<meta name="description" content="Debugging with GDB">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="up" href="Controlling-GDB.html#Controlling-GDB" title="Controlling GDB">
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<link rel="next" href="Editing.html#Editing" title="Editing">
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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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<div class="node">
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<a name="Prompt"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Editing.html#Editing">Editing</a>,
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Up: <a rel="up" accesskey="u" href="Controlling-GDB.html#Controlling-GDB">Controlling GDB</a>
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<hr>
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</div>
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<h3 class="section">22.1 Prompt</h3>
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<p><a name="index-prompt-1650"></a>
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<span class="sc">gdb</span> indicates its readiness to read a command by printing a string
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called the <dfn>prompt</dfn>. This string is normally ‘<samp><span class="samp">(gdb)</span></samp>’. You
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can change the prompt string with the <code>set prompt</code> command. For
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instance, when debugging <span class="sc">gdb</span> with <span class="sc">gdb</span>, it is useful to change
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the prompt in one of the <span class="sc">gdb</span> sessions so that you can always tell
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which one you are talking to.
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<p><em>Note:</em> <code>set prompt</code> does not add a space for you after the
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prompt you set. This allows you to set a prompt which ends in a space
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or a prompt that does not.
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<a name="index-set-prompt-1651"></a>
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<dl><dt><code>set prompt </code><var>newprompt</var><dd>Directs <span class="sc">gdb</span> to use <var>newprompt</var> as its prompt string henceforth.
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<p><a name="index-show-prompt-1652"></a><br><dt><code>show prompt</code><dd>Prints a line of the form: ‘<samp><span class="samp">Gdb's prompt is: </span><var>your-prompt</var></samp>’
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</dl>
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<p>Versions of <span class="sc">gdb</span> that ship with Python scripting enabled have
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prompt extensions. The commands for interacting with these extensions
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are:
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<a name="index-set-extended_002dprompt-1653"></a>
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<dl><dt><code>set extended-prompt </code><var>prompt</var><dd>Set an extended prompt that allows for substitutions.
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See <a href="gdb_002eprompt.html#gdb_002eprompt">gdb.prompt</a>, for a list of escape sequences that can be used for
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substitution. Any escape sequences specified as part of the prompt
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string are replaced with the corresponding strings each time the prompt
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is displayed.
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<p>For example:
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<pre class="smallexample"> set extended-prompt Current working directory: \w (gdb)
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</pre>
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<p>Note that when an extended-prompt is set, it takes control of the
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<var>prompt_hook</var> hook. See <a href="prompt_005fhook.html#prompt_005fhook">prompt_hook</a>, for further information.
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<p><a name="index-show-extended_002dprompt-1654"></a><br><dt><code>show extended-prompt</code><dd>Prints the extended prompt. Any escape sequences specified as part of
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the prompt string with <code>set extended-prompt</code>, are replaced with the
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corresponding strings each time the prompt is displayed.
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</dl>
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</body></html>
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