Decompresses files the gzip or the compress command compresses.
gunzip [options] files
See the options for gzip.
The gunzip command decompresses compressed files (these files have the .gz or .Z extension). After decompressing, gunzip replaces the compressed files with their decompressed versions and removes the .gz or .Z extension in the filenames. The gunzip command is the same as gzip with the -d option.