Add environment variable to .bashrc through script

Solution 1:

Use the echo command to append lines to the .bashrc script

So in your script use these lines

echo 'export APP=/opt/tinyos-2.x/apps' >> ~/.bashrc 

echo  'export TOS=/opt/tinyos-2.x/tos' >> ~/.bashrc

Make sure to use >> (append), if you use a single > you will overwrite the file.

~/.bashrc indicates .bashrc is in your home directory