how to add environment variables linux

 Here I am listing few methods to add programs and shell scripts to your path

1. this is the easiest one

    temporarily, you can go to the folder open in terminal or you can navigate through the terminal. then

    

If you open a new tab, it all just vanish means julia is not anymore in your path you can check through printenv command also. To make this thing permanent you can go and edit your bashrc file as follows:now save it by pressing c^o. and exit by c^x.