| <html lang="en"> |
| <head> |
| <title>Event Designators - 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="History-Interaction.html#History-Interaction" title="History Interaction"> |
| <link rel="next" href="Word-Designators.html#Word-Designators" title="Word Designators"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988-2019 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> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="Event-Designators"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="Word-Designators.html#Word-Designators">Word Designators</a>, |
| Up: <a rel="up" accesskey="u" href="History-Interaction.html#History-Interaction">History Interaction</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">33.1.1 Event Designators</h4> |
| |
| <p><a name="index-event-designators-3294"></a> |
| An event designator is a reference to a command line entry in the |
| history list. |
| Unless the reference is absolute, events are relative to the current |
| position in the history list. |
| <a name="index-history-events-3295"></a> |
| <dl> |
| <dt><code>!</code><dd>Start a history substitution, except when followed by a space, tab, |
| the end of the line, or ‘<samp><span class="samp">=</span></samp>’. |
| |
| <br><dt><code>!</code><var>n</var><dd>Refer to command line <var>n</var>. |
| |
| <br><dt><code>!-</code><var>n</var><dd>Refer to the command <var>n</var> lines back. |
| |
| <br><dt><code>!!</code><dd>Refer to the previous command. This is a synonym for ‘<samp><span class="samp">!-1</span></samp>’. |
| |
| <br><dt><code>!</code><var>string</var><dd>Refer to the most recent command |
| preceding the current position in the history list |
| starting with <var>string</var>. |
| |
| <br><dt><code>!?</code><var>string</var><code>[?]</code><dd>Refer to the most recent command |
| preceding the current position in the history list |
| containing <var>string</var>. |
| The trailing |
| ‘<samp><span class="samp">?</span></samp>’ may be omitted if the <var>string</var> is followed immediately by |
| a newline. |
| |
| <br><dt><code>^</code><var>string1</var><code>^</code><var>string2</var><code>^</code><dd>Quick Substitution. Repeat the last command, replacing <var>string1</var> |
| with <var>string2</var>. Equivalent to |
| <code>!!:s/</code><var>string1</var><code>/</code><var>string2</var><code>/</code>. |
| |
| <br><dt><code>!#</code><dd>The entire command line typed so far. |
| |
| </dl> |
| |
| </body></html> |
| |
