How to Display the Most Recently Installed Software Updates in Mac OS X

In troubleshooting Mac OS X problems, you may want to find out when particular software updates were applied.  I will cover 2 ways to do using, the first using the Console and then using Terminal.

In my previous post, I showed how to view system logs using the Console.  The process is exactly the same, except that we will be looking for Update.log file.

How to display the most recently installed software updates using the Console
1)  Open Console by going to Application > Utilities > Console.app.
2)  Using the Menu, go to View > Show Log List.
3)  In the left pane, look for FILES > /Library/Logs > Software Update.log and select it.

How to display the most recently installed software updates using Terminal
1) In terminal, type tail -n 10 /Library/Logs/Software\ Update.log and hit Enter. This will display the 10 most recently installed software updates.