OS X app compress/decompress solved

RGould8 at aol.com RGould8 at aol.com
Wed Nov 3 21:58:03 CST 2004

I did some poking around on the web for Mac OS X unix calls that do 
compression/decompression while preserving the resource-fork, and it appears that the 
"ditto" command does the trick.

to compress before uploading to the web:
% ditto -c -X   -z --rsrc some_folder some_folder.cpio

To decompress, after downloading from the web:
% ditto -c -X   -z --rsrc some_folder some_folder.cpio

There's a whole article dedicated to this issue, found at:


My only concern is that I'm not sure if this works in all versions of Mac OS 
X (10.2 and up).   It's working great for me in 10.3.   I'm able to make these 
calls from Rev using the shell() command.

- Rob

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