Data Detectors allow you to turn addresses, phone numbers and dates in mail messages into Address Book contacts and iCal events. You can also turn selected text into to-do items or stickies.
By default your Mac screenshots will appear on the Desktop. However, if you take screenshots often, it could be useful to set up a dedicated folder for them and have them automatically save there. You can do this with a simple Terminal command.
Ruby is a popular programming language that comes installed on your Mac and can be accessed in the Terminal. You can use the Rub command line interpreter to run simple programs in a single line. You can also write more complex programs in a text file and run them. This gives you similar functionality to using BASIC on the Apple II.
For most apps you can simply open multiple windows or tabs to edit or view separate documents. But some apps only let you have one window open. Sometimes when using apps like Safari, it is useful to be able to isolate windows from each other in case one crashes. Learn how to use the Terminal window to launch multiple instances of the same app. Learn how to then use Automator to create an app that will do this for you automatically.
There are some odd and unusual things on your Mac that you can do with the Terminal. You can create banners, use your screen saver as your desktop background, look at interesting, daily calendars, and play hidden games.
If you are an advanced user with trouble, or someone who like to tinker with Mac OS X settings, then take a look at OnyX. This free utility gives you easy access to Terminal commands and hidden preferences.
You can launch an application using the Finder, Dock, keyboard, Terminal and even your voice. See how many of these you knew about.
You can customize the top of every Mac OS X Finder window adding useful buttons that perform common tasks. You can also add files, folders and applications to the toolbar.
There are four text editors you can use from the Terminal: Pico, Nano, Vi and Emacs. Each can be used to quickly edit text files. Learn how to access them and what makes them different.
Sometimes the Finder can fail you when you want to copy lots of files, like an entire CD or DVD. Learn how to use the Terminal to copy whole volumes with better error handling and reporting.
How to use the built-in Mac OS X spell check in many applications like TextEdit, Mail and Safari. You can make it learn new words and reset your custom dictionary.
Gary Rosenzweig takes a look at three methods of merging files inside of folders. You can use Apple's FileMerge that comes with XCode, the 'ditto' command in Terminal or a variety of downloadable programs including File Synchronization.
Gary Rosenzweig shows you how to find the largest files on your hard drive and clean them up to create more space.
Gary Rosenzweig of MacMost.com shows you the basics of using the Terminal application. Learn how to navigate, list files, rename, copy and delete. Also learn some shortcuts that experts use.
Gary Rosenzweig looks at using two Macs to connect to the Internet securely while traveling.