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Kerberos (PennKey) Authentication for OS X 10.8 "Mountain Lion", 10.9 "Mavericks" and 10.10 "Yosemite"

Allowing users to log in with their PennKey is the best way to provision access to public computing resources. Everyone at Penn has a PennKey and password, that is all they need.

Prerequisites: Mac OS X 10.8.5/10.9.5/10.10.4, PennNet IP address, Kerb access to the Penn Directory.

Update (11/2/15): The content for this post has moved to a new site. All further updates to this page will be placed there. Thanks for visiting!

Create a Custom Dock for OS X 10.7/10.8

A common question or need, when setting-up a new Mac for someone would be to make all of the installed applications available from the dock. Many people often do not realize an application is installed unless it is in the dock.

Creating a custom dock for all of the users on a Mac is a very simple solution.

Tip: Ditto

Ditto is a utility that comes with Mac OS X, which copies entire directories from one place to another. When automated via shell script, ditto can form a very very basic backup tool.

Create the ditto command.

For example, "ditto /Users/jasonrw/Documents/ /Volumes/USBHDD/ditto/"

Test out the command and make sure it performs as expected. Place the syntax into a plain text file, preceeded by a #!/bin/bash and followed by an "exit" statement.


ditto /Users/jasonrw/Documents/ /Volumes/USBHDD/ditto/


Tip: Show Lion's Library

In Apple's latest version of Mac OS X, "Lion", the "Library" folder inside of each user's profile is hidden. ~/Library can be reached manually from the "Go to Folder..." menu item. A better option would be to have ~/Library not hidden at all. To do this, enter the following in the terminal.

sudo chflags nohidden ~/Library

Terminal will ask for your login password, or that of an administrator.

Please be careful with directly editing files in ~/Library. Errors in this part of Mac OS X can render features unable to function.