How do I uncompress stuff it files on a unix system?

Until the 2005 release of Mac OS X v10.4 "Tiger", StuffIt Expander came preloaded with the Macintosh operating system. Once the dominant archive method on the Macintosh platform, StuffIt's removal from Tiger underscores the Macintosh user base's recent move away from the format, and towards the DMG and ZIP formats. However, Apple's built-in Zip utility BOMArchiveHelper does not support encrypted ZIP archives, archives created with PKWare's Deflate64 setting, or a wide variety of other compressed, encrypted and encoded formats that users encounter, so the StuffIt utilities are still handy to have.