4.8.1 lz4_decompress — Decompress mysqlpump LZ4-Compressed Output解压mysqlpump LZ4压缩输出

The lz4_decompress utility decompresses mysqlpump output that was created using LZ4 compression.lz4_decompress实用程序解压缩使用lz4压缩创建的mysqlpump输出。

Note注意

If MySQL was configured with the -DWITH_LZ4=system option, lz4_decompress is not built. 如果MySQL配置了-DWITH_LZ4=system选项，则不会构建lz4_decompress。In this case, the system lz4 command can be used instead.在这种情况下，可以使用系统lz4命令。

Invoke lz4_decompress like this:按如下方式调用lz4_decompress：

lz4_decompress input_file output_file

Example:

mysqlpump --compress-output=LZ4 > dump.lz4
lz4_decompress dump.lz4 dump.txt

To see a help message, invoke lz4_decompress with no arguments.要查看帮助消息，请不带参数地调用lz4_decompress。

To decompress mysqlpump ZLIB-compressed output, use zlib_decompress. 要解压缩mysqlpump ZLIB压缩输出，请使用zlib_decompress。See Section 4.8.3, “zlib_decompress — Decompress mysqlpump ZLIB-Compressed Output”.请参阅第4.8.3节，“zlib_decompress——解压缩mysqlpump zlib压缩输出”。