7-Zip 16.04 / 17.01 Beta

7-Zip is an open-source file archiver, that offers the highest compression ratio, using the new 7z format, which delivers compression results that are usually 30-50% better than standard ZIP. We tested it with a server log file, which compressed with ZIP had a file size of 18 mb and using 7-Zip was reduced to 8 Mb (results may vary, depending on file type). 7Zip supports 7z, ZIP, CAB, RAR, ARJ, GZIP, BZIP2, TAR, CPIO, RPM and DEB formats, so it can be used with all popular archive files. The program offers a basic file explorer interface and also integrates into the Windows right-click menu. It can be associated with any of the supported formats and also offers command/line support.

 

  • Changes in 17.01 Beta:
  • - Minor speed optimization for LZMA2 (xz and 7z) multi-threading compression. 7-Zip now uses additional memory buffers for multi-block LZMA2 compression. CPU utilization was slightly improved.
  • - 7-zip now creates multi-block xz archives by default. Block size can be specified with -ms{m|g} switch.
  • - xz decoder now can unpack random block from multi-block xz archives. 7-Zip File Manager now can open nested multi-block xz archives (for example, image.iso.xz) without full unpacking of xz archive.
  • - 7-Zip now can create zip archives from stdin to stdout.
  • - 7-Zip command line: @listfile now doesn't work after -- switch. Use [email protected] before -- switch instead.
  • - The BUGs were fixed: 7-Zip could add unrequired alternate file streams to WIM archives, for commands that contain filename wildcards and -sns switch. 7-Zip 17.00 beta crashed for commands that write anti-item to 7z archive. 7-Zip 17.00 beta ignored "Use large memory pages" option.

 

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