How to directly generate a STL file from netgen

# This is a Makefile

georoot=hfvmd001
geofile=$(georoot).geo
stlfile=$(georoot)_000.stl


netgenSTL:
netgen -batchmode -geofile=$(geofile)  -meshfile=$(stlfile) -meshfiletype="STL Format"

How to add and remove path

# in ~/bin/bashfun file
# add the following line in .bashrc
# . ~/bin/bashfun

add-intel ()
{
export PATH=/opt/intel/bin/:/opt/intel/compilers_and_libraries_2017.0.098/linux/mpi/intel64/bin/:$PATH
}

rm-intel ()
{
newpath=`echo $PATH | sed -e "s/\/opt\/intel\/bin\/://" | sed -e 's/\/opt\/intel\/compilers_and_libraries_2017.0.098\/linux\/mpi\/intel64\/bin\/://' `
# echo $newpath
export PATH=$newpath
}

How to open google chrome with incognito mode as default

1. Open /usr/share/applications/google-chrome.desktop 
• sudo vi  /usr/share/applications/google-chrome.desktop 
2. Find lines beginning with Exec and change
• /usr/bin/google-chrome-stable  
• to
• /usr/bin/google-chrome-stable  --incognito  

How to install OpenFOAM3+ on Ubuntu 16

1. Compilers (default): gcc and openmpi
2. Go to home directory and make "OpenFOAM" directory
   • cd
   • mkdir -p OpenFOAM
   • cd OpenFOAM
3. Download: OpenFOAM-v3.0+.tgz HERE
4. Unzip
   • tar -xzf OpenFOAM-v3.0+.tgz
   • cd OpenFOAM-v3.0+
5. Disable graphics compiling part
   1. Open
      • vi src/postProcessing/functionObjects/Allwmake
   2. Comment out the last line
      • # ./graphics/Allwmake
6. Take care of conflict due to flex++ version
   1. Open the following files
      1. $WM_PROJECT_DIR/src/triSurface/triSurface/interfaces/STL/readSTLASCII.L
      2. $WM_PROJECT_DIR/applications/utilities/mesh/conversion/gambitToFoam/gambitToFoam.L
      3. $WM_PROJECT_DIR/applications/utilities/mesh/conversion/fluent3DMeshToFoam/fluent3DMeshToFoam.L
      4. $WM_PROJECT_DIR/applications/utilities/mesh/conversion/fluentMeshToFoam/fluentMeshToFoam.L
      5. $WM_PROJECT_DIR/applications/utilities/mesh/conversion/ansysToFoam/ansysToFoam.L
   2. Make change
      • from
        • #if YY_FLEX_SUBMINOR_VERSION < 34
        • extern "C" int yywrap()
        • #else
        • int yyFlexLexer::yywrap()
        • #endif
      • to
        • // #if YY_FLEX_SUBMINOR_VERSION < 34
        • // extern "C" int yywrap()
        • // #else
        • int yyFlexLexer::yywrap()
        • // #endif
7. Set up compiling environment
   • source OpenFOAM/OpenFOAM-v3.0+/etc/bashrc
   • echo " alias of30plus='source OpenFOAM/OpenFOAM-v3.0+/etc/bashrc'" >> $HOME/.bahsrc
8. Compile
   • ./Allwmake

to reset KDE screen

cp -a ~/.kde/share/apps/kscreen ~/.kde/share/apps/kscreen.bak

rm -f ~/.kde/share/apps/kscreen/*

sudo update-grub

shutdown -r now

Emacs short-cut

M-x
org-emphasize
org-mode
 

You can make words *bold*, /italic/, _underlined_, =verbatim= and ~code~, and, if you must, ‘+strike-through+’. Text in the code and verbatim string is not processed for Org mode specific syntax, it is exported verbatim.

Adding latex template in Ubuntu

Make a new directory for

Class files under
/usr/share/texlive/texmf-dist/tex/latex/

BST files under
/usr/share/texlive/texmf-dist/bibtex/bst/


STY files under
/usr/share/texlive/texmf-dist/tex/latex/