files] gunzip [
files] zcat [
Compress specified files (or data read from standard input) with Lempel-Ziv coding (LZ77). Rename compressed file to filename.gz; keep ownership modes and access/modification times. Ignore symbolic links. Uncompress with gunzip, which takes all of gzip’s options except those specified. zcat is identical to gunzip -c and takes the options -fhLV, described here. Files compressed with the compress command can be decompressed using these commands.
- -n, --fast, --best
Regulate the speed of compression using the specified digit n, where −1 or --fast indicates the fastest compression method (less compression), and −9 or --best indicates the slowest compression method (most compression). The default compression level is −6.
- -c, --stdout, --to-stdout
Print output to standard output, and do not change input files.
- -d, --decompress, --uncompress
Same as gunzip.
- -f, --force
Force compression. gzip normally prompts for permission to continue when the file has multiple links, its .gz version already exists, or it is reading compressed data to or from a terminal.
- -h, --help
Display a help screen and then exit.
- -l, --list
Expects to be given compressed files as arguments. Files may be compressed by any of the following methods: gzip, deflate, compress, lzh, or pack. For each file, list uncompressed and compressed sizes (the former is always −1 for files compressed by programs other than gzip), compression ratio, and ...