As mentioned by Michael Clark in his post Finder Security Bug or Feature?, the freeware application WhatSize is a quick and easy tool for measuring the size of a given folder and all subfolders and files within it. But WhatSize can only measure based on the permissions of the user who launches it, so you will not be able to measure the size of other user accounts nor folders with special permissions like the root level ‘private’ or ‘.Spotlight-V100’ or other directories inside /System. But here is a way for WhatSize to measure every file on your HD, regardless of permissions:
There is a built-in tool to archive files on Mac. To unzip a file on Mac, there are Mac un-archiver apps those can unzip files on Mac. See the list of best mac compress and unzip tools that you can use. Oct 29, 2013 GB, which used to be the only and correct term, now means the incorrect size. GiB now means the actual size. Also, the Mac OS has a twin file system for each file and folder on the drive. The data fork, and the resource fork. Each added resource fork (which doesn't exist on any MS formatted drive) adds a few Kbytes to each total file size.
See Every File Size Mac Application
See Every File Size Mac App Free
The Terminal will fill with some code and WhatSize will now launch, seemingly normally. The difference is that it now has superuser privileges and can read every directory on your hard drive if you ask it to measure. You might be surprised at the difference between folder sizes, especially if you have multiple user accounts on your machine.
But be careful while you’re looking around in this way! Because if you choose a file and hit the Delete button, WhatSize will delete it as the root user and it won’t go in your user account’s Trash to be emptied. I recommend using the Reveal in Finder command and then sending the file to the trash from the Finder, where you’re using your regular user permissions.
Also, don’t close the Terminal window while you’re still running WhatSize, or it will quit WhatSize. Instead, use WhatSize’s File>Quit command, then close the Terminal window.
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So if you really, truly want to know exactly what all your space is being used for, run WhatSize with the Terminal’s sudo command. Newsletter software mac.
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