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<div id="version" align=right><b>petsc-3.7.5 2017-01-01</b></div>
<div id="bugreport" align=right><a href="mailto:petsc-maint@mcs.anl.gov?subject=Typo or Error in Documentation &body=Please describe the typo or error in the documentation: petsc-3.7.5 v3.7.5 docs/manualpages/Sys/PetscOptionsInsert.html "><small>Report Typos and Errors</small></a></div>
<A NAME="PetscOptionsInsert"><H1>PetscOptionsInsert</H1></A>
Inserts into the options database from the command line, the environmental variable and a file.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
#include "petscsys.h"
PetscErrorCode PetscOptionsInsert(PetscOptions options,int *argc,char ***args,const char file[])
</PRE>
<H3><FONT COLOR="#CC3333">Input Parameters</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>options </B></TD><TD>- options database or NULL for the default global database
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>argc </B></TD><TD>- count of number of command line arguments
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>args </B></TD><TD>- the command line arguments
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>file </B></TD><TD>- optional filename, defaults to ~username/.petscrc
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Note</FONT></H3>
Since <A HREF="../Sys/PetscOptionsInsert.html#PetscOptionsInsert">PetscOptionsInsert</A>() is automatically called by <A HREF="../Sys/PetscInitialize.html#PetscInitialize">PetscInitialize</A>(),
the user does not typically need to call this routine. <A HREF="../Sys/PetscOptionsInsert.html#PetscOptionsInsert">PetscOptionsInsert</A>()
can be called several times, adding additional entries into the database.
<P>
<H3><FONT COLOR="#CC3333">Options Database Keys</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-options_monitor <optional filename> </B></TD><TD>- print options names and values as they are set
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>-options_file <filename> </B></TD><TD>- read options from a file
</TD></TR>
<P>
<P>
<P>
<H3><FONT COLOR="#CC3333">See Also</FONT></H3>
PetscOptionsDestroy_Private(), <A HREF="../Sys/PetscOptionsView.html#PetscOptionsView">PetscOptionsView</A>(), <A HREF="../Sys/PetscOptionsInsertString.html#PetscOptionsInsertString">PetscOptionsInsertString</A>(), <A HREF="../Sys/PetscOptionsInsertFile.html#PetscOptionsInsertFile">PetscOptionsInsertFile</A>(),
<BR><A HREF="../Sys/PetscInitialize.html#PetscInitialize">PetscInitialize</A>()
<P><B><P><B><FONT COLOR="#CC3333">Level:</FONT></B>advanced
<BR><FONT COLOR="#CC3333">Location:</FONT></B><A HREF="../../../src/sys/objects/options.c.html#PetscOptionsInsert">src/sys/objects/options.c</A>
<BR><A HREF="./index.html">Index of all Sys routines</A>
<BR><A HREF="../../index.html">Table of Contents for all manual pages</A>
<BR><A HREF="../singleindex.html">Index of all manual pages</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/snes/examples/tutorials/ex22.c.html">src/snes/examples/tutorials/ex22.c.html</A><BR>
<A HREF="../../../src/snes/examples/tutorials/ex30.c.html">src/snes/examples/tutorials/ex30.c.html</A><BR>
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