Unlike ZFS, the Linux Btrfs filesystem does not yet have a scrub command. However, there are ways to accomplish the same thing using simple shell scripting.

You may know you can secure erase the OS X trash can, but did you know also OS X comes with a terminal command that can wipe and rename files before deleting them?

A quick but useful tip to make OS X always boot in verbose mode, where startup messages are displayed on the screen instead of the grey apple logo, as well as boot into single user mode first before continuing the boot process to graphical login.