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121 lines
5.8 KiB
HTML
121 lines
5.8 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>Searching (Debugging with GDB)</title>
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<meta name="description" content="Searching (Debugging with GDB)">
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<meta name="keywords" content="Searching (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="Readline-Interaction.html#Readline-Interaction" rel="up" title="Readline Interaction">
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<link href="Readline-Init-File.html#Readline-Init-File" rel="next" title="Readline Init File">
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<link href="Readline-Arguments.html#Readline-Arguments" rel="prev" title="Readline Arguments">
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<style type="text/css">
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a.summary-letter {text-decoration: none}
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kbd {font-style: oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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span.nolinebreak {white-space: nowrap}
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span.roman {font-family: initial; font-weight: normal}
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span.sansserif {font-family: sans-serif; font-weight: normal}
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ul.no-bullet {list-style: none}
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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="Searching"></a>
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<div class="header">
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<p>
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Previous: <a href="Readline-Arguments.html#Readline-Arguments" accesskey="p" rel="prev">Readline Arguments</a>, Up: <a href="Readline-Interaction.html#Readline-Interaction" accesskey="u" rel="up">Readline 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="Searching-for-Commands-in-the-History"></a>
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<h4 class="subsection">32.2.5 Searching for Commands in the History</h4>
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<p>Readline provides commands for searching through the command history
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for lines containing a specified string.
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There are two search modes: <em>incremental</em> and <em>non-incremental</em>.
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</p>
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<p>Incremental searches begin before the user has finished typing the
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search string.
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As each character of the search string is typed, Readline displays
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the next entry from the history matching the string typed so far.
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An incremental search requires only as many characters as needed to
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find the desired history entry.
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To search backward in the history for a particular string, type
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<kbd>C-r</kbd>. Typing <kbd>C-s</kbd> searches forward through the history.
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The characters present in the value of the <code>isearch-terminators</code> variable
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are used to terminate an incremental search.
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If that variable has not been assigned a value, the <tt class="key">ESC</tt> and
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<kbd>C-J</kbd> characters will terminate an incremental search.
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<kbd>C-g</kbd> will abort an incremental search and restore the original line.
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When the search is terminated, the history entry containing the
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search string becomes the current line.
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</p>
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<p>To find other matching entries in the history list, type <kbd>C-r</kbd> or
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<kbd>C-s</kbd> as appropriate.
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This will search backward or forward in the history for the next
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entry matching the search string typed so far.
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Any other key sequence bound to a Readline command will terminate
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the search and execute that command.
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For instance, a <tt class="key">RET</tt> will terminate the search and accept
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the line, thereby executing the command from the history list.
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A movement command will terminate the search, make the last line found
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the current line, and begin editing.
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</p>
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<p>Readline remembers the last incremental search string. If two
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<kbd>C-r</kbd>s are typed without any intervening characters defining a new
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search string, any remembered search string is used.
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</p>
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<p>Non-incremental searches read the entire search string before starting
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to search for matching history lines. The search string may be
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typed by the user or be part of the contents of the current line.
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</p>
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<hr>
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<div class="header">
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<p>
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Previous: <a href="Readline-Arguments.html#Readline-Arguments" accesskey="p" rel="prev">Readline Arguments</a>, Up: <a href="Readline-Interaction.html#Readline-Interaction" accesskey="u" rel="up">Readline 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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</body>
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</html>
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