p7zip is a port of 7z.exe and 7za.exe for Unix. 7z and 7za are command line version of 7-zip, see http://www.7-zip.org/. 7-Zip is a file archiver with highest compression ratio. Currently, p7zip (like 7-zip) supports only little-endian machine. 7z uses shared libraries and supports more archive formats, otherwise 7z and 7za work the same. They didn't come with a manpage, html commandline documentation will be installed in %%PREFIX%%/share/doc/p7zip/ WWW: http://p7zip.sourceforge.net/