I am busy changing the world

If you haven't read through this letter of the Gates, do it now: http://www.gatesnotes.com/2015-annual-letter

There are some good solutions for doing Parental Control in Ubuntu 14.04. One is SelfControl which is a fork from the Mac OSX version ( installation instructions ). But, one of the SelfControl's shortfall is that It only does the web content filtering, and without a scheduling functionality (It only allows you to block a certain website in an amount of time). Luckily, there is another Parental Control software for Linux called gnome-nanny . Beside web content filtering, gnome-nanny also helps you to control the PC, mail client, and Intant messaging use time: Official repo: https://github.com/GNOME/nanny To install gnome-nanny in Ubuntu 14.04: $ sudo add-apt-repository ppa:boamaod/nanny-test $ sudo apt-get update $ sudo apt-get install nanny Nanny's Ubuntu packaging repo: https://github.com/boamaod/nanny-ubuntu Nanny's Ubuntu PPA:  https://launchpad.net/~boamaod/+archive/ubuntu/nanny-test