After running a bunch of simulations I got bored with stupid errors like forgetting to change patch type in boundery file, waiting decomposePar or reconstructPar, running few hundred simulations and then changing fvSchemes to second order discretizations... In that manner I created few bash scripts to ease the pain and hopefully they will help someone else.

1 OpenFOAM's little helpers

1.1 prepBoundary

First helper is prepBoundary. This bash script checks your patches names and according to it changes their type. If your patches name has specific pattern, script will recognize and change its type.
Example: I have a wall patch whose type should be wall, so when I create mesh I will name that patch bottomWall or bottomWALL; or
if I have an inletOutlet patch that should be type patch, when I create mesh I will name that patch upperInletOutlet or upperINLETOutlet

This script reads patches names so their names should have specific string inside them. You can easily change what will these strings be by adding/removing words from part:
# setting familiar words in arrays.
In these script those key words are:

For type wall

wall, Wall and WALL

For type patch

inlet, Inlet, INLET, outlet, Outlet and OUTLET

For type slip

slip, Slip and SLIP

For type empty

empty, Empty, EMPTY and frontAndBackPlanes

For type symmetry

symmetry, Symmetry and SYMMETRY

For type wedge

wedge, Wedge and WEDGE

For type cyclic

cyclic, Cyclic and CYCLIC

Script needs two things to work:

Needs header in boundery file because it looks for word FoamFile to navigate trough it
Needs ONE LINE between patch name and type (in standard Foam files in that line bracket { is located):

   patchName
   {
       type            patch;

Here goes the script: File:PrepBoundary

Sig Numerical Optimization / Scripting and automatic post-processing

1 OpenFOAM's little helpers

1.1 prepBoundary