[linux] change PATH permanently on Ubuntu

I'd like to add to PATH the value ":/home/me/play/"
for the installation of Play! framework.
so I ran this command:

PATH=$PATH:/home/me/play

it worked. but in the next time I checked, the value changed back to the old one.

so I guess I didn't "saved" the new value, right?

how do you do that?

Add the following line in your .profile file in your home directory (using vi ~/.profile):

PATH=$PATH:/home/me/play
export PATH

Then, for the change to take effect, simply type in your terminal:

$ . ~/.profile

Assuming you want to add this path for all users on the system, add the following line to your /etc/profile.d/play.sh (and possibly play.csh, etc):

PATH=$PATH:/home/me/play
export PATH

Try to add export PATH=$PATH:/home/me/play in ~/.bashrc file.