If you got this far and the "bzip2 -dvv"s give identical stored vs computed CRCs, you're probably in business. Complete instructions for use are in the preformatted manual page, in the file bzip2.txt. You can also do "bzip2 --help" to see some helpful information. "bzip2 -L" displays the software license. Please read the README file carefully. Finally, note that bzip2 comes with ABSOLUTELY NO WARRANTY. Happy compressing!