Apple no longer makes it easy to tell precisely how much free space is available on your Mac, but you know when you don’t have enough. Adam Engst offers (and explains) 21 simple steps to clear space quickly.

This article explains how to correctly handle filenames in Bourne shells (the primary shell of Unix/Linux/POSIX systems), based on the issues discussed in ‘Fixing Unix/Linux/Filenames’. Many programs fail to work properly on filenames that include spaces, begin with dash (-), include newlines, and so on, because developers don’t know how to do it properly. Many texts, even good ones, get this wrong.