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rw- would mean the file can be read and written to, but the file isn’t executable.r- would mean the file can be read, but not written to, and the file isn’t executable.- would mean no read or write access, and the file isn’t executable.These levels are always shown in that order, so for instance: You’ll see letters here, too, such as r (read), w (write), and x (execute). The first group shows the access levels for the file/folder owner (1), the middle group shows group permissions (2), and the final three shows permissions for any other users (3). Otherwise, choose Home from the Finder’s Go menu ( Go > Home) or press Shift-Command-H.The next nine characters are split into groups of three. Depending on your Finder settings, this may be as easy as simply opening a new Finder window. Open your home folder (/Users/ yourusername) in the Finder. (I came up with-no joke- 19 ways to view the folder in Lion and Mountain Lion.) But in Mavericks and Yosemite, Apple has made the task much more convenient, providing an easily accessible setting for toggling the visibility of your user-level Library folder. If you’re still running Lion or Mountain Lion, making the ~/Library folder requires a little bit of work. Mavericks now offers a simple setting to make the ~/Library folder visible. You just need to know how to make the folder visible again.

Luckily, as I mentioned, the folder is merely hidden, using a special file attribute called the hidden flag. While I understand Apple’s motives here-I’ve had to troubleshoot more than a few Macs on which an inexperienced user has munged the contents of ~/Library-a user can have plenty of valid reasons for needing to access the personal Library folder.

This is the same reason Apple has always hidden the folders containing OS X’s Unix underpinnings: /bin, /sbin, /usr, and the like. The reason for this move is presumably that people unfamiliar with the inner workings of OS X often open ~/Library and start rooting around, moving and deleting files, only to later discover that programs don’t work right, application settings are gone, or-worse-data is missing.