There comes a case where we have to edit hidden files like .bashrc or .htaccess, but these files stay hidden
and cant be seen when we just type #ls in command prompt.
So viewing this file and edit it manually is a bit different than just typing #vi filename
For exmaple for viewing and editing .bashrc which is in /home directory we have to
ls -la ~/ | more
And for viewing,
and add line you need to add and save and exit.