gunzip decompresses gzipped files. gzexe is used to create self-uncompressing executable files. gzip compresses the given files, using Lempel-Ziv (LZ77) coding. zcat uncompresses the given gzipped files to standard output. zcmp runs cmp on gzipped files. zdiff runs diff on gzipped files. zegrep runs egrep on gzipped files. zfgrep runs fgrep on gzipped files. zforce forces a .gz extension on all given files that are gzipped files, so that gzip will not compress them again. This can be useful when file names were truncated during a file transfer. zgrep runs grep on gzipped files. zless runs less on gzipped files. zmore runs more on gzipped files. znew recompresses files from compress format to gzip format -- .Z to .gz.