Rsync is one of the best tools can you can carry around in your tool belt. Learn how to use the defacto standard backup and syncing application, rsync.
One of the biggest reasons for installing an email server on a Nix machine is the ability to use scripts to send alerts in the case of security concerns, hardware failure, or when certain mission critical tasks are completed successfully.
Python is a great scripting language for Linux and it is often used to automate tasks or check on overall system health. Discover how to send emails through Gmail with Python.