<html lang="en"> <head> <title>Saving Data on Unexpected Exits - Untitled</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Untitled"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="Simple-File-I_002fO.html#Simple-File-I_002fO" title="Simple File I/O"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <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="Saving-Data-on-Unexpected-Exits"></a> <p> Up: <a rel="up" accesskey="u" href="Simple-File-I_002fO.html#Simple-File-I_002fO">Simple File I/O</a> <hr> </div> <h5 class="subsubsection">14.1.3.1 Saving Data on Unexpected Exits</h5> <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 ‘<samp><span class="samp">octave-core</span></samp>’ 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. <!-- load-save.cc --> <p><a name="doc_002dcrash_005fdumps_005foctave_005fcore"></a> <div class="defun"> — Built-in Function: <var>val</var> = <b>crash_dumps_octave_core</b> ()<var><a name="index-crash_005fdumps_005foctave_005fcore-755"></a></var><br> — Built-in Function: <var>old_val</var> = <b>crash_dumps_octave_core</b> (<var>new_val</var>)<var><a name="index-crash_005fdumps_005foctave_005fcore-756"></a></var><br> <blockquote><p>Query or set the internal variable that controls whether Octave tries to save all current variables to the file "octave-core" if it crashes or receives a hangup, terminate or similar signal. <!-- Texinfo @sp should work but in practice produces ugly results for HTML. --> <!-- A simple blank line produces the correct behavior. --> <!-- @sp 1 --> <p class="noindent"><strong>See also:</strong> <a href="doc_002doctave_005fcore_005ffile_005flimit.html#doc_002doctave_005fcore_005ffile_005flimit">octave_core_file_limit</a>, <a href="doc_002doctave_005fcore_005ffile_005fname.html#doc_002doctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="doc_002doctave_005fcore_005ffile_005foptions.html#doc_002doctave_005fcore_005ffile_005foptions">octave_core_file_options</a>. </p></blockquote></div> <!-- sighandlers.cc --> <p><a name="doc_002dsighup_005fdumps_005foctave_005fcore"></a> <div class="defun"> — Built-in Function: <var>val</var> = <b>sighup_dumps_octave_core</b> ()<var><a name="index-sighup_005fdumps_005foctave_005fcore-757"></a></var><br> — Built-in Function: <var>old_val</var> = <b>sighup_dumps_octave_core</b> (<var>new_val</var>)<var><a name="index-sighup_005fdumps_005foctave_005fcore-758"></a></var><br> <blockquote><p>Query or set the internal variable that controls whether Octave tries to save all current variables to the file "octave-core" if it receives a hangup signal. </p></blockquote></div> <!-- sighandlers.cc --> <p><a name="doc_002dsigterm_005fdumps_005foctave_005fcore"></a> <div class="defun"> — Built-in Function: <var>val</var> = <b>sigterm_dumps_octave_core</b> ()<var><a name="index-sigterm_005fdumps_005foctave_005fcore-759"></a></var><br> — Built-in Function: <var>old_val</var> = <b>sigterm_dumps_octave_core</b> (<var>new_val</var>)<var><a name="index-sigterm_005fdumps_005foctave_005fcore-760"></a></var><br> <blockquote><p>Query or set the internal variable that controls whether Octave tries to save all current variables to the file "octave-core" if it receives a terminate signal. </p></blockquote></div> <!-- load-save.cc --> <p><a name="doc_002doctave_005fcore_005ffile_005foptions"></a> <div class="defun"> — Built-in Function: <var>val</var> = <b>octave_core_file_options</b> ()<var><a name="index-octave_005fcore_005ffile_005foptions-761"></a></var><br> — Built-in Function: <var>old_val</var> = <b>octave_core_file_options</b> (<var>new_val</var>)<var><a name="index-octave_005fcore_005ffile_005foptions-762"></a></var><br> <blockquote><p>Query or set the internal variable that specifies the options used for saving the workspace data if Octave aborts. 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's binary format. <!-- Texinfo @sp should work but in practice produces ugly results for HTML. --> <!-- A simple blank line produces the correct behavior. --> <!-- @sp 1 --> <p class="noindent"><strong>See also:</strong> <a href="doc_002dcrash_005fdumps_005foctave_005fcore.html#doc_002dcrash_005fdumps_005foctave_005fcore">crash_dumps_octave_core</a>, <a href="doc_002doctave_005fcore_005ffile_005fname.html#doc_002doctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="doc_002doctave_005fcore_005ffile_005flimit.html#doc_002doctave_005fcore_005ffile_005flimit">octave_core_file_limit</a>. </p></blockquote></div> <!-- load-save.cc --> <p><a name="doc_002doctave_005fcore_005ffile_005flimit"></a> <div class="defun"> — Built-in Function: <var>val</var> = <b>octave_core_file_limit</b> ()<var><a name="index-octave_005fcore_005ffile_005flimit-763"></a></var><br> — Built-in Function: <var>old_val</var> = <b>octave_core_file_limit</b> (<var>new_val</var>)<var><a name="index-octave_005fcore_005ffile_005flimit-764"></a></var><br> <blockquote><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>). 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) <!-- Texinfo @sp should work but in practice produces ugly results for HTML. --> <!-- A simple blank line produces the correct behavior. --> <!-- @sp 1 --> <p class="noindent"><strong>See also:</strong> <a href="doc_002dcrash_005fdumps_005foctave_005fcore.html#doc_002dcrash_005fdumps_005foctave_005fcore">crash_dumps_octave_core</a>, <a href="doc_002doctave_005fcore_005ffile_005fname.html#doc_002doctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="doc_002doctave_005fcore_005ffile_005foptions.html#doc_002doctave_005fcore_005ffile_005foptions">octave_core_file_options</a>. </p></blockquote></div> <!-- load-save.cc --> <p><a name="doc_002doctave_005fcore_005ffile_005fname"></a> <div class="defun"> — Built-in Function: <var>val</var> = <b>octave_core_file_name</b> ()<var><a name="index-octave_005fcore_005ffile_005fname-765"></a></var><br> — Built-in Function: <var>old_val</var> = <b>octave_core_file_name</b> (<var>new_val</var>)<var><a name="index-octave_005fcore_005ffile_005fname-766"></a></var><br> <blockquote><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. The default value is <code>"octave-core"</code> <!-- Texinfo @sp should work but in practice produces ugly results for HTML. --> <!-- A simple blank line produces the correct behavior. --> <!-- @sp 1 --> <p class="noindent"><strong>See also:</strong> <a href="doc_002dcrash_005fdumps_005foctave_005fcore.html#doc_002dcrash_005fdumps_005foctave_005fcore">crash_dumps_octave_core</a>, <a href="doc_002doctave_005fcore_005ffile_005fname.html#doc_002doctave_005fcore_005ffile_005fname">octave_core_file_name</a>, <a href="doc_002doctave_005fcore_005ffile_005foptions.html#doc_002doctave_005fcore_005ffile_005foptions">octave_core_file_options</a>. </p></blockquote></div> </body></html>