08-24-2013
Not sure I understand the entire post, but as your command's stdout finally ends up in VAR after piping it several times, what be the contents of VAR?
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LEARN ABOUT REDHAT
mkoctfile
MKOCTFILE(1) General Commands Manual MKOCTFILE(1)
NAME
mkoctfile - Compile dynamic-load modules for GNU Octave
SYNOPSIS
mkoctfile [-IDIR] [-DDEF] [-lLIB] [-LDIR] [-M|--depend] [-c] [-o FILE|--output FILE] [-p VAR|--print VAR] [-s|--strip] [-v|--ver-
bose] [-h|-?|--help] file ...
DESCRIPTION
mkoctfile is used to compile source C, C++ or Fortran source code in dynamically loadble file for octave(1).
OPTIONS
mkoctfile accepts the following options:
-IDIR Add include directory DIR to compile commands.
-DDEF Add definition DEF to compiler call.
-lLIB Add library LIB to link command.
-LDIR Add library directory DIR to link command.
-M|--depend
Generate dependency files (.d) for C and C++ source files.
-c Compile but do not link.
-o FILE|--output FILE
Output file name; default extension is .oct.
-p VAR|--print VAR
Print configuration variable VAR. Recognized variables are:
CPPFLAGS CPICFLAG
INCFLAGS CXX
F2C CXXFLAGS
F2CFLAGS CXXPICFLAG
F77 XTRA_CFLAGS
FFLAGS XTRA_CXXFLAGS
FPICFLAG SHLEXT
CC SH_LD
CFLAGS SH_LDFLAGS
-s|--strip
Strip the output file.
-v|--verbose
Echo commands as they are executed.
file Compile or linke file. Recognised file types are
.c C source
.cc C++ source
.C C++ source
.cpp C++ source
.f Fortran source
.F Fortran source
.o object file
.SH SEE ALSO
.BR octave (1).
AUTHOR
John W. Eaton <jwe@bevo.che.wisc.edu>
This manual page was contributed by Dirk Eddelbuettel <edd@debian.org> for the Debian GNU/Linux distribution but may be used by others.
GNU Octave 1 November 2002 MKOCTFILE(1)