pigz

Can be used to decompress files, an upgraded version of gzip's parallel implementation

Supplementary instructions

pigz command can be used to decompress files. The most important thing is that it supports multi-threaded parallel processing and decompression is faster than gzip. Home page: http://zlib.net/pigz/

grammar

pigz [ -cdfhikKlLmMnNqrRtz0..9,11 ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name ... ]
unpigz [ -cfhikKlLmMnNqrRtz ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name ... ]

Parameters

-0 to -9, -11 # Compression level (level 11, zopfli, is much slower)
--fast, --best # Compression levels 1 and 9 respectively
-b, --blocksize mmm # Set compression block size to mmmK (default 128K)
-c, --stdout # Write all processed output to stdout (won't delete)
-d, --decompress # Decompress the compressed input
-f, --force # Force overwrite, compress .gz, links, and to terminal
-F --first # Do iterations first, before block split for -11
-h, --help # Display a help screen and quit
-i, --independent # Compress blocks independently for damage recovery
-I, --iterations n # Number of iterations for -11 optimization
-J, --maxsplits n # Maximum number of split blocks for -11
-k, --keep # Do not delete original file after processing
-K, --zip # Compress to PKWare zip (.zip) single entry format
-l, --list # List the contents of the compressed input
-L, --license # Display the pigz license and quit
-m, --no-time # Do not store or restore mod time
-M, --time # Store or restore mod time
-n, --no-name # Do not store or restore file name or mod time
-N, --name # Store or restore file name and mod time
-O --oneblock # Do not split into smaller blocks for -11
-p, --processes n # Allow up to n compression threads (default is the number of online processors, or 8 if unknown)
-q, --quiet # Print no messages, even on error
-r, --recursive # Process the contents of all subdirectories
-R, --rsyncable # Input-determined block locations for rsync
-S, --suffix .sss # Use suffix .sss instead of .gz (for compression)
-t, --test # Test the integrity of the compressed input
-v, --verbose # Provide more verbose output
-V --version # Show the version of pigz
-Y --synchronous # Force output file write to permanent storage
-z, --zlib # Compress to zlib (.zz) instead of gzip format
-- # All arguments after "--" are treated as files

Example

Can be used in combination with tar, compression command

tar -cvf - dir1 dir2 dir3 | pigz -p 8 > output.tgz

Unzip command

pigz -p 8 -d output.tgz

If it is in gzip format, tar decompression is also supported.

tar -xzvf output.tgz