export PYTHONPATH=$PYTHONPATH:/home/uma/software/VTK-6.1.0/Wrapping/Python:/home/uma/software/VTK-6.1.0/Wrapping/Python/vtk:/home/uma/software/VTK-6.1.0/bin
ls -la ~/ | more
.bashrc
vi ~/.bashrc
-rw-r--r-- 1 discworld discworld 3330 Mar 10 16:03 .bashrc
chmod 644 .bashrc
rw r r