Leopard’s Unix tricksWhen you purchase through links in our articles, we may earn a small commission. This doesn't affect our editorial independence. Mac OS X 10.5 includes a number of changes to its Unix core, perhaps more than in any prior OS X release. Many of the changes are routine—updated versions of key Unix programs such as the bash shell (from 2.0.5b to 3.2), the vi text editor (from version 6.2 to 7.0), and
