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129 lines
4.8 KiB
HTML
129 lines
4.8 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>Event Designators (Debugging with GDB)</title>
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<meta name="description" content="Event Designators (Debugging with GDB)">
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<meta name="keywords" content="Event Designators (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="History-Interaction.html#History-Interaction" rel="up" title="History Interaction">
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<link href="Word-Designators.html#Word-Designators" rel="next" title="Word Designators">
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<link href="History-Interaction.html#History-Interaction" rel="prev" title="History Interaction">
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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="Event-Designators"></a>
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<div class="header">
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<p>
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Next: <a href="Word-Designators.html#Word-Designators" accesskey="n" rel="next">Word Designators</a>, Up: <a href="History-Interaction.html#History-Interaction" accesskey="u" rel="up">History Interaction</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="Event-Designators-1"></a>
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<h4 class="subsection">33.1.1 Event Designators</h4>
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<a name="index-event-designators"></a>
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<p>An event designator is a reference to a command line entry in the
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history list.
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Unless the reference is absolute, events are relative to the current
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position in the history list.
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<a name="index-history-events"></a>
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</p>
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<dl compact="compact">
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<dt><code>!</code></dt>
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<dd><p>Start a history substitution, except when followed by a space, tab,
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the end of the line, or ‘<samp>=</samp>’.
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</p>
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</dd>
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<dt><code>!<var>n</var></code></dt>
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<dd><p>Refer to command line <var>n</var>.
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</p>
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</dd>
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<dt><code>!-<var>n</var></code></dt>
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<dd><p>Refer to the command <var>n</var> lines back.
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</p>
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</dd>
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<dt><code>!!</code></dt>
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<dd><p>Refer to the previous command. This is a synonym for ‘<samp>!-1</samp>’.
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</p>
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</dd>
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<dt><code>!<var>string</var></code></dt>
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<dd><p>Refer to the most recent command
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preceding the current position in the history list
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starting with <var>string</var>.
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</p>
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</dd>
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<dt><code>!?<var>string</var>[?]</code></dt>
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<dd><p>Refer to the most recent command
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preceding the current position in the history list
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containing <var>string</var>.
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The trailing
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‘<samp>?</samp>’ may be omitted if the <var>string</var> is followed immediately by
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a newline.
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</p>
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</dd>
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<dt><code>^<var>string1</var>^<var>string2</var>^</code></dt>
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<dd><p>Quick Substitution. Repeat the last command, replacing <var>string1</var>
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with <var>string2</var>. Equivalent to
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<code>!!:s/<var>string1</var>/<var>string2</var>/</code>.
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</p>
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</dd>
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<dt><code>!#</code></dt>
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<dd><p>The entire command line typed so far.
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</p>
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</dd>
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</dl>
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</body>
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</html>
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