p7zip - Wrapper on 7zr, a 7-zip file archiver with high compression ratio
p7zip[-d][-h|--help][file] -h print this help
-d decompress file
7-Zip is a file archiver with the highest compression ratio. The program supports 7z (that implements LZMA compression algorithm), ZIP, CAB, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.