Required steps to perform this:
You should have root access to terminal.
Server: Ubuntu 14
LAMP should be installed.
Run this command: cat /etc/motd.tail
Download the autoinstaller from our website:
wget http://autoinstall.plesk.com/plesk-installer
Add execute permissions to the autoinstaller:
chmod +x plesk-installer
Launch the autoinstaller:
./plesk-installer
If upgrading Plesk from a lower version:
Command line:
/usr/local/psa/admin/sbin/autoinstaller --all-versions
GUI...