Change to the Stata installation directory, typically
/usr/local/stata14, rename the license file, and rerun the license
initialization program as the superuser, i.e:
% sudo -s
# cd /usr/local/stata14
# mv stata.lic stata.lic.bak
This will make a backup of your existing license file and then
prompt you for the new license information.
After the license has been initialized, launch Stata and type
to make sure you have the latest updates installed. Follow any
instructions presented on the screen.