pigz
可以用来解压缩文件，gzip的并行实现升级版
补充说明
pigz命令可以用来解压缩文件，最重要的是支持多线程并行处理，解压缩比gzip快。主页: http://zlib.net/pigz/
语法
pigz [ -cdfhikKlLmMnNqrRtz0..9,11 ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name ... ]
unpigz [ -cfhikKlLmMnNqrRtz ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name ... ]
参数
-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
实例
可以结合tar使用, 压缩命令
tar -cvf - dir1 dir2 dir3 | pigz -p 8 > output.tgz
解压命令
pigz -p 8 -d output.tgz
如果是gzip格式，也支持用tar解压
tar -xzvf output.tgz