Info-zip will probably work. I've tested it out to 1,000,000 (one million) files in a ZIP archive, although all of those files were in a single directory.

That was 7 years ago. From memory no single file can be >= 4GB uncompressed. Also, if resulting ZIP is >= 4GB then you may need to use FUNZIP to extract the files, hacking the source code to loop over stdin to get all the files.

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"In addition to supporting the original Zip file format, WinZip, 9.0 and later, also supports the 64-bit extensions to the Zip file format. The extended format lets you store all the data you need in Zip files of virtually unlimited size.

The original Zip file format limited the number of member files in a Zip file to 65,535, and the maximum size of both the Zip file itself and any member file to 4 gigabytes. For all practical purposes, the 64-bit extended format eliminates all these restrictions. Using the extended format, the member file size, Zip file size, and number of member files you can add to a Zip file are limited only by your system's resources."

http://www.winzip.com/wzdic.htm

Version 10 also offers tighter compression, better automation and the ability to burn to discs from within the program.

WinRAR is excellent too.

-- Snowman

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