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<div id="version" align=right><b>petsc-3.14.5 2021-03-03</b></div>
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<A NAME="PetscFileRetrieve"><H1>PetscFileRetrieve</H1></A>
Obtains a file from a URL or compressed and copies into local disk space as uncompressed.
<H3><FONT COLOR="#CC3333">Synopsis</FONT></H3>
<PRE>
<A HREF="../Sys/PetscErrorCode.html#PetscErrorCode">PetscErrorCode</A> <A HREF="../Sys/PetscFileRetrieve.html#PetscFileRetrieve">PetscFileRetrieve</A>(<A HREF="../Sys/MPI_Comm.html#MPI_Comm">MPI_Comm</A> comm,const char url[],char localname[],size_t llen,<A HREF="../Sys/PetscBool.html#PetscBool">PetscBool</A> *found)
</PRE>
Collective
<P>
<H3><FONT COLOR="#CC3333">Input Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>comm </B></TD><TD>- processors accessing the file
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>url </B></TD><TD>- name of file, including entire URL (with or without .gz)
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>llen </B></TD><TD>- length of localname
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Output Parameter</FONT></H3>
<TABLE border="0" cellpadding="0" cellspacing="0">
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>localname </B></TD><TD>- name of local copy of file - valid on only process zero
</TD></TR>
<TR><TD WIDTH=40></TD><TD ALIGN=LEFT VALIGN=TOP><B>found </B></TD><TD>- if found or retrieved the file - valid on all processes
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#CC3333">Notes</FONT></H3>
if the file already exists local this function just returns without downloading it.
<P>
<P><B></B><H3><FONT COLOR="#CC3333">Level</FONT></H3>intermediate<BR>
<H3><FONT COLOR="#CC3333">Location</FONT></H3>
</B><A HREF="../../../src/sys/fileio/fretrieve.c.html#PetscFileRetrieve">src/sys/fileio/fretrieve.c</A>
<P><H3><FONT COLOR="#CC3333">Examples</FONT></H3>
<A HREF="../../../src/ts/tutorials/extchem.c.html">src/ts/tutorials/extchem.c.html</A><BR>
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