Created with System Administrators who service large groups of workstations in mind, Yasu (Yet Another System Utility) is a Mac OS X maintenance utility that has been developed to do a specific group of tasks quickly within a few clicks, rather than needing to endlessly type shell script commands in the Terminal application.
Yasu is a “Universal Binary” Macintosh utility that allows system administrators, as well as standard users, to conveniently run various system level Unix shell Scripts in order to perform maintenance routines and clear the many cache files used by OS X. Yasu was designed to be a simple, first line of attack for a workstation that has started “acting Up.” More often than not, a thorough purge of the cache files of a Mac will bring its behavior back into line.
Important Note: Yasu can take a long time to run. It may seem as if the application is not doing anything, but rest assured that it is. It should be left alone to complete the tasks you have chosen to perform. It is recommended that you not run other applications while performing maintenance with Yasu. Also, you should be aware that if “Restart” or “Shutdown” when finished is selected, your workstation will do just that once all tasks have completed.