A couple tricks to copy files from a remote server through an intermediate gateway; useful when you don't have direct access to the remote server but the gateway does.
In which I go through the steps required to set up a MySQL cluster based on Galera's synchronous replication using Percona's optimised distribution of MySQL.
A simple guide on how to quickly setup a secure VPN access for use with computers as well as iPhones and other mobile devices.
FileVault2 makes it easy to fully encrypt the main drive, but if you want to migrate your home directory to a second drive also encrypted, you are normally out of luck. Here's a workaround to achieve exactly this.