| 1 | pigz
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| 2 | ===
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| 3 |
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| 4 | 可以用来解压缩文件，gzip的并行实现升级版
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| 5 |
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| 6 | ## 补充说明
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| 7 |
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| 8 | **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/](http://zlib.net/pigz/)
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| 9 |
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| 10 | ### 语法
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| 11 |
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| 12 | ```shell
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| 13 | pigz [ -cdfhikKlLmMnNqrRtz0..9,11 ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name ... ]
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| 14 | unpigz [ -cfhikKlLmMnNqrRtz ] [ -b blocksize ] [ -p threads ] [ -S suffix ] [ name ... ]
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| 15 | ```
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| 16 |
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| 17 | ### 参数
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| 18 |
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| 19 | ```shell
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| 20 | -0 to -9, -11 # Compression level (level 11, zopfli, is much slower)
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| 21 | --fast, --best # Compression levels 1 and 9 respectively
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| 22 | -b, --blocksize mmm # Set compression block size to mmmK (default 128K)
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| 23 | -c, --stdout # Write all processed output to stdout (won't delete)
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| 24 | -d, --decompress # Decompress the compressed input
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| 25 | -f, --force # Force overwrite, compress .gz, links, and to terminal
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| 26 | -F --first # Do iterations first, before block split for -11
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| 27 | -h, --help # Display a help screen and quit
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| 28 | -i, --independent # Compress blocks independently for damage recovery
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| 29 | -I, --iterations n # Number of iterations for -11 optimization
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| 30 | -J, --maxsplits n # Maximum number of split blocks for -11
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| 31 | -k, --keep # Do not delete original file after processing
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| 32 | -K, --zip # Compress to PKWare zip (.zip) single entry format
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| 33 | -l, --list # List the contents of the compressed input
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| 34 | -L, --license # Display the pigz license and quit
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| 35 | -m, --no-time # Do not store or restore mod time
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| 36 | -M, --time # Store or restore mod time
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| 37 | -n, --no-name # Do not store or restore file name or mod time
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| 38 | -N, --name # Store or restore file name and mod time
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| 39 | -O --oneblock # Do not split into smaller blocks for -11
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| 40 | -p, --processes n # Allow up to n compression threads (default is the number of online processors, or 8 if unknown)
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| 41 | -q, --quiet # Print no messages, even on error
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| 42 | -r, --recursive # Process the contents of all subdirectories
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| 43 | -R, --rsyncable # Input-determined block locations for rsync
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| 44 | -S, --suffix .sss # Use suffix .sss instead of .gz (for compression)
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| 45 | -t, --test # Test the integrity of the compressed input
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| 46 | -v, --verbose # Provide more verbose output
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| 47 | -V --version # Show the version of pigz
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| 48 | -Y --synchronous # Force output file write to permanent storage
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| 49 | -z, --zlib # Compress to zlib (.zz) instead of gzip format
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| 50 | -- # All arguments after "--" are treated as files
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| 51 | ```
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| 52 |
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| 53 | ### 实例
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| 54 |
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| 55 | 可以结合`tar`使用, 压缩命令
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| 56 |
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| 57 | ```shell
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| 58 | tar -cvf - dir1 dir2 dir3 | pigz -p 8 > output.tgz
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| 59 | ```
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| 60 |
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| 61 | 解压命令
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| 62 |
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| 63 | ```shell
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| 64 | pigz -p 8 -d output.tgz
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| 65 | ```
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| 66 |
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| 67 | 如果是gzip格式，也支持用tar解压
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| 68 |
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| 69 | ```shell
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| 70 | tar -xzvf output.tgz
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| 71 | ```
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