![]() ![]() Here you’ll see the option to choose where expanded files are placed. If you compress a large folder containing several gigabytes of data, it could take several minutes. If you compress a single file, the process will be very quick. If you try to compress a JPEG file, for instance, you won’t see much benefit, as the JPEG format already includes compression.Ī: To compress a file, a folder, or a group of files in Mac OS X, select the item(s) in the Finder and then either choose File -> Compress Item Name, or right-click on the selected item(s) and choose Compress Item Name. You’ll find some files shrink a lot-compressed text files can be half the size of the originals-and others not so much. But what do you do if a file won’t expand or you come across a different type of archive? Here are answers to frequently asked questions about working with compressed files on Mac OS X.Ī: File compression technology looks for repeated data and writes archives that eliminate these repetitions to save space. A zip file, or archive, takes up less space than the original files, so that your documents, images and whatnot are easier to send or store. Double-click one of these and it expands to show files hidden inside. The file should contain 8 ascii files (they're surface temperatures for a site on the surface of Mars).If you’ve ever sent, or received, a big file via email, you’ve undoubtably encountered a zip file. Here's a link to one of the files, I can't provide a link to the website I'm operating, it's not up and running yet. I would prefer not to tell users to use the terminal though, if I can avoid it. Warning : 3 extra bytes at beginning or within zipfile (attempting to process anyway) Opening the zip file in the terminal using unzip works, though gives the warning I don't think that's the case with mine because it works fine on my Linux machine. ![]() Going by a google search the zip-cpgz loop looks like it is a pretty common problem, but almost all the solutions suggest that the original file was poorly formatted a zip of a non-existant initial file, a zip produced by a windows machine with a different file ending, things like that. Double clicking the cpgz file creates another cpgz, etc etc. But if I download the files using my Mac laptop the files will not unzip, double clicking creates a cpgz file. ![]() It works perfectly on the Fedora linux computer I'm running it on. I'm using PHP ZipArchive to allow website users to combine a few files into a zip file, and then download them. Dynamically created zip files by ZipStream in PHP won't open in OSX ![]()
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February 2023
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