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<a name="Saving-Data-on-Unexpected-Exits"></a>
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<p>
Up: <a href="Simple-File-I_002fO.html#Simple-File-I_002fO" accesskey="u" rel="up">Simple File I/O</a> &nbsp; [<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>
<a name="Saving-Data-on-Unexpected-Exits-1"></a>
<h4 class="subsubsection">14.1.3.1 Saving Data on Unexpected Exits</h4>

<p>If Octave for some reason exits unexpectedly it will by default save the
variables available in the workspace to a file in the current directory.
By default this file is named &lsquo;<samp>octave-workspace</samp>&rsquo; and can be loaded
into memory with the <code>load</code> command.  While the default behavior
most often is reasonable it can be changed through the following
functions.
</p>
<a name="XREFcrash_005fdumps_005foctave_005fcore"></a><dl>
<dt><a name="index-crash_005fdumps_005foctave_005fcore"></a>: <em><var>val</var> =</em> <strong>crash_dumps_octave_core</strong> <em>()</em></dt>
<dt><a name="index-crash_005fdumps_005foctave_005fcore-1"></a>: <em><var>old_val</var> =</em> <strong>crash_dumps_octave_core</strong> <em>(<var>new_val</var>)</em></dt>
<dt><a name="index-crash_005fdumps_005foctave_005fcore-2"></a>: <em></em> <strong>crash_dumps_octave_core</strong> <em>(<var>new_val</var>, &quot;local&quot;)</em></dt>
<dd><p>Query or set the internal variable that controls whether Octave tries
to save all current variables to the file <samp>octave-workspace</samp> if it
crashes or receives a hangup, terminate or similar signal.
</p>
<p>When called from inside a function with the <code>&quot;local&quot;</code> option, the
variable is changed locally for the function and any subroutines it calls.
The original variable value is restored when exiting the function.
</p>
<p><strong>See also:</strong> <a href="#XREFoctave_005fcore_005ffile_005flimit">octave_core_file_limit</a>, <a href="#XREFoctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="#XREFoctave_005fcore_005ffile_005foptions">octave_core_file_options</a>.
</p></dd></dl>


<a name="XREFsighup_005fdumps_005foctave_005fcore"></a><dl>
<dt><a name="index-sighup_005fdumps_005foctave_005fcore"></a>: <em><var>val</var> =</em> <strong>sighup_dumps_octave_core</strong> <em>()</em></dt>
<dt><a name="index-sighup_005fdumps_005foctave_005fcore-1"></a>: <em><var>old_val</var> =</em> <strong>sighup_dumps_octave_core</strong> <em>(<var>new_val</var>)</em></dt>
<dt><a name="index-sighup_005fdumps_005foctave_005fcore-2"></a>: <em></em> <strong>sighup_dumps_octave_core</strong> <em>(<var>new_val</var>, &quot;local&quot;)</em></dt>
<dd><p>Query or set the internal variable that controls whether Octave tries
to save all current variables to the file <samp>octave-workspace</samp> if it
receives a hangup signal.
</p>
<p>When called from inside a function with the <code>&quot;local&quot;</code> option, the
variable is changed locally for the function and any subroutines it calls.
The original variable value is restored when exiting the function.
</p></dd></dl>


<a name="XREFsigterm_005fdumps_005foctave_005fcore"></a><dl>
<dt><a name="index-sigterm_005fdumps_005foctave_005fcore"></a>: <em><var>val</var> =</em> <strong>sigterm_dumps_octave_core</strong> <em>()</em></dt>
<dt><a name="index-sigterm_005fdumps_005foctave_005fcore-1"></a>: <em><var>old_val</var> =</em> <strong>sigterm_dumps_octave_core</strong> <em>(<var>new_val</var>)</em></dt>
<dt><a name="index-sigterm_005fdumps_005foctave_005fcore-2"></a>: <em></em> <strong>sigterm_dumps_octave_core</strong> <em>(<var>new_val</var>, &quot;local&quot;)</em></dt>
<dd><p>Query or set the internal variable that controls whether Octave tries
to save all current variables to the file <samp>octave-workspace</samp> if it
receives a terminate signal.
</p>
<p>When called from inside a function with the <code>&quot;local&quot;</code> option, the
variable is changed locally for the function and any subroutines it calls.
The original variable value is restored when exiting the function.
</p></dd></dl>


<a name="XREFoctave_005fcore_005ffile_005foptions"></a><dl>
<dt><a name="index-octave_005fcore_005ffile_005foptions"></a>: <em><var>val</var> =</em> <strong>octave_core_file_options</strong> <em>()</em></dt>
<dt><a name="index-octave_005fcore_005ffile_005foptions-1"></a>: <em><var>old_val</var> =</em> <strong>octave_core_file_options</strong> <em>(<var>new_val</var>)</em></dt>
<dt><a name="index-octave_005fcore_005ffile_005foptions-2"></a>: <em></em> <strong>octave_core_file_options</strong> <em>(<var>new_val</var>, &quot;local&quot;)</em></dt>
<dd><p>Query or set the internal variable that specifies the options used for
saving the workspace data if Octave aborts.
</p>
<p>The value of <code>octave_core_file_options</code> should follow the same format
as the options for the <code>save</code> function.  The default value is Octave&rsquo;s
binary format.
</p>
<p>When called from inside a function with the <code>&quot;local&quot;</code> option, the
variable is changed locally for the function and any subroutines it calls.
The original variable value is restored when exiting the function.
</p>
<p><strong>See also:</strong> <a href="#XREFcrash_005fdumps_005foctave_005fcore">crash_dumps_octave_core</a>, <a href="#XREFoctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="#XREFoctave_005fcore_005ffile_005flimit">octave_core_file_limit</a>.
</p></dd></dl>


<a name="XREFoctave_005fcore_005ffile_005flimit"></a><dl>
<dt><a name="index-octave_005fcore_005ffile_005flimit"></a>: <em><var>val</var> =</em> <strong>octave_core_file_limit</strong> <em>()</em></dt>
<dt><a name="index-octave_005fcore_005ffile_005flimit-1"></a>: <em><var>old_val</var> =</em> <strong>octave_core_file_limit</strong> <em>(<var>new_val</var>)</em></dt>
<dt><a name="index-octave_005fcore_005ffile_005flimit-2"></a>: <em></em> <strong>octave_core_file_limit</strong> <em>(<var>new_val</var>, &quot;local&quot;)</em></dt>
<dd><p>Query or set the internal variable that specifies the maximum amount
of memory (in kilobytes) of the top-level workspace that Octave will
attempt to save when writing data to the crash dump file (the name of
the file is specified by <var>octave_core_file_name</var>).
</p>
<p>If <var>octave_core_file_options</var> flags specify a binary format,
then <var>octave_core_file_limit</var> will be approximately the maximum
size of the file.  If a text file format is used, then the file could
be much larger than the limit.  The default value is -1 (unlimited)
</p>
<p>When called from inside a function with the <code>&quot;local&quot;</code> option, the
variable is changed locally for the function and any subroutines it calls.
The original variable value is restored when exiting the function.
</p>
<p><strong>See also:</strong> <a href="#XREFcrash_005fdumps_005foctave_005fcore">crash_dumps_octave_core</a>, <a href="#XREFoctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="#XREFoctave_005fcore_005ffile_005foptions">octave_core_file_options</a>.
</p></dd></dl>


<a name="XREFoctave_005fcore_005ffile_005fname"></a><dl>
<dt><a name="index-octave_005fcore_005ffile_005fname"></a>: <em><var>val</var> =</em> <strong>octave_core_file_name</strong> <em>()</em></dt>
<dt><a name="index-octave_005fcore_005ffile_005fname-1"></a>: <em><var>old_val</var> =</em> <strong>octave_core_file_name</strong> <em>(<var>new_val</var>)</em></dt>
<dt><a name="index-octave_005fcore_005ffile_005fname-2"></a>: <em></em> <strong>octave_core_file_name</strong> <em>(<var>new_val</var>, &quot;local&quot;)</em></dt>
<dd><p>Query or set the internal variable that specifies the name of the file
used for saving data from the top-level workspace if Octave aborts.
</p>
<p>The default value is <code>&quot;octave-workspace&quot;</code>
</p>
<p>When called from inside a function with the <code>&quot;local&quot;</code> option, the
variable is changed locally for the function and any subroutines it calls.
The original variable value is restored when exiting the function.
</p>
<p><strong>See also:</strong> <a href="#XREFcrash_005fdumps_005foctave_005fcore">crash_dumps_octave_core</a>, <a href="#XREFoctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="#XREFoctave_005fcore_005ffile_005foptions">octave_core_file_options</a>.
</p></dd></dl>


<hr>
<div class="header">
<p>
Up: <a href="Simple-File-I_002fO.html#Simple-File-I_002fO" accesskey="u" rel="up">Simple File I/O</a> &nbsp; [<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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