By (author unknown), MacOSXHints.com – July 13, 2010 at 10:30AM
AppleJack has been updated to work with Snow Leopard with the release of version 1.6.
In a nutshell, AppleJack is a command-line utility and series of scripts for running repair tasks in Single User Mode when a bootable startup disc in not available. It’s great for those times when all you get is a blue screen and no GUI startup, and need to troubleshoot and repair the problem, but left your complete CLI reference book in your other suit.
To use it, bring up Single User Mode by holding down Command-S at startup and then when the prompt is available type applejack. Use the menu provided or select ‘auto pilot’ to perform all of the basic tasks, such as filesystem and permission repair, cache clearing, and more. There is an ‘Expert mode’ available by typing ‘x’ at the AppleJack prompt to do more operations on the hardware and user accounts. Documentation is provided in a Man page; type man applejac ...
