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<title>Debugging with GDB: Commands For History</title>
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<a name="Commands-For-History"></a>
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<div class="header">
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<p>
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Next: <a href="Commands-For-Text.html#Commands-For-Text" accesskey="n" rel="next">Commands For Text</a>, Previous: <a href="Commands-For-Moving.html#Commands-For-Moving" accesskey="p" rel="previous">Commands For Moving</a>, Up: <a href="Bindable-Readline-Commands.html#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</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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<hr>
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<a name="Commands-For-Manipulating-The-History"></a>
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<h4 class="subsection">32.4.2 Commands For Manipulating The History</h4>
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<dl compact="compact">
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<dt><code>accept-line (Newline or Return)</code>
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<a name="index-accept_002dline-_0028Newline-or-Return_0029"></a>
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</dt>
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<dd><p>Accept the line regardless of where the cursor is.
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If this line is
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non-empty, it may be added to the history list for future recall with
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<code>add_history()</code>.
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If this line is a modified history line, the history line is restored
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to its original state.
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</p>
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</dd>
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<dt><code>previous-history (C-p)</code>
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<a name="index-previous_002dhistory-_0028C_002dp_0029"></a>
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</dt>
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<dd><p>Move ‘back’ through the history list, fetching the previous command.
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</p>
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</dd>
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<dt><code>next-history (C-n)</code>
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<a name="index-next_002dhistory-_0028C_002dn_0029"></a>
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</dt>
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<dd><p>Move ‘forward’ through the history list, fetching the next command.
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</p>
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</dd>
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<dt><code>beginning-of-history (M-<)</code>
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<a name="index-beginning_002dof_002dhistory-_0028M_002d_003c_0029"></a>
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</dt>
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<dd><p>Move to the first line in the history.
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</p>
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</dd>
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<dt><code>end-of-history (M->)</code>
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<a name="index-end_002dof_002dhistory-_0028M_002d_003e_0029"></a>
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</dt>
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<dd><p>Move to the end of the input history, i.e., the line currently
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being entered.
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</p>
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</dd>
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<dt><code>reverse-search-history (C-r)</code>
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<a name="index-reverse_002dsearch_002dhistory-_0028C_002dr_0029"></a>
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</dt>
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<dd><p>Search backward starting at the current line and moving ‘up’ through
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the history as necessary. This is an incremental search.
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</p>
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</dd>
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<dt><code>forward-search-history (C-s)</code>
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<a name="index-forward_002dsearch_002dhistory-_0028C_002ds_0029"></a>
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</dt>
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<dd><p>Search forward starting at the current line and moving ‘down’ through
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the history as necessary. This is an incremental search.
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</p>
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</dd>
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<dt><code>non-incremental-reverse-search-history (M-p)</code>
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<a name="index-non_002dincremental_002dreverse_002dsearch_002dhistory-_0028M_002dp_0029"></a>
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</dt>
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<dd><p>Search backward starting at the current line and moving ‘up’
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through the history as necessary using a non-incremental search
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for a string supplied by the user.
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The search string may match anywhere in a history line.
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</p>
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</dd>
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<dt><code>non-incremental-forward-search-history (M-n)</code>
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<a name="index-non_002dincremental_002dforward_002dsearch_002dhistory-_0028M_002dn_0029"></a>
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</dt>
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<dd><p>Search forward starting at the current line and moving ‘down’
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through the history as necessary using a non-incremental search
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for a string supplied by the user.
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The search string may match anywhere in a history line.
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</p>
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</dd>
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<dt><code>history-search-forward ()</code>
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<a name="index-history_002dsearch_002dforward-_0028_0029"></a>
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</dt>
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<dd><p>Search forward through the history for the string of characters
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between the start of the current line and the point.
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The search string must match at the beginning of a history line.
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This is a non-incremental search.
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By default, this command is unbound.
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</p>
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</dd>
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<dt><code>history-search-backward ()</code>
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<a name="index-history_002dsearch_002dbackward-_0028_0029"></a>
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</dt>
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<dd><p>Search backward through the history for the string of characters
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between the start of the current line and the point.
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The search string must match at the beginning of a history line.
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This is a non-incremental search.
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By default, this command is unbound.
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</p>
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</dd>
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<dt><code>history-substring-search-forward ()</code>
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<a name="index-history_002dsubstring_002dsearch_002dforward-_0028_0029"></a>
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</dt>
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<dd><p>Search forward through the history for the string of characters
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between the start of the current line and the point.
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The search string may match anywhere in a history line.
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This is a non-incremental search.
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By default, this command is unbound.
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</p>
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</dd>
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<dt><code>history-substring-search-backward ()</code>
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<a name="index-history_002dsubstring_002dsearch_002dbackward-_0028_0029"></a>
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</dt>
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<dd><p>Search backward through the history for the string of characters
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between the start of the current line and the point.
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The search string may match anywhere in a history line.
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This is a non-incremental search.
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By default, this command is unbound.
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</p>
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</dd>
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<dt><code>yank-nth-arg (M-C-y)</code>
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<a name="index-yank_002dnth_002darg-_0028M_002dC_002dy_0029"></a>
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</dt>
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<dd><p>Insert the first argument to the previous command (usually
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the second word on the previous line) at point.
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With an argument <var>n</var>,
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insert the <var>n</var>th word from the previous command (the words
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in the previous command begin with word 0). A negative argument
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inserts the <var>n</var>th word from the end of the previous command.
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Once the argument <var>n</var> is computed, the argument is extracted
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as if the ‘<samp>!<var>n</var></samp>’ history expansion had been specified.
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</p>
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</dd>
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<dt><code>yank-last-arg (M-. or M-_)</code>
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<a name="index-yank_002dlast_002darg-_0028M_002d_002e-or-M_002d_005f_0029"></a>
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</dt>
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<dd><p>Insert last argument to the previous command (the last word of the
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previous history entry).
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With a numeric argument, behave exactly like <code>yank-nth-arg</code>.
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Successive calls to <code>yank-last-arg</code> move back through the history
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list, inserting the last word (or the word specified by the argument to
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the first call) of each line in turn.
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Any numeric argument supplied to these successive calls determines
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the direction to move through the history. A negative argument switches
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the direction through the history (back or forward).
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The history expansion facilities are used to extract the last argument,
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as if the ‘<samp>!$</samp>’ history expansion had been specified.
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="Commands-For-Text.html#Commands-For-Text" accesskey="n" rel="next">Commands For Text</a>, Previous: <a href="Commands-For-Moving.html#Commands-For-Moving" accesskey="p" rel="previous">Commands For Moving</a>, Up: <a href="Bindable-Readline-Commands.html#Bindable-Readline-Commands" accesskey="u" rel="up">Bindable Readline Commands</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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