6. Using an 'Up' button in the Finder toolbar
Wouldn't it be nice if the Finder toolbar had an 'Up' button? Although Apple doesn't include one, you can add one. Download Teki's free Up Button app. After installation, go to your Applications folder, find the Up app, and drag it to the Finder toolbar. Wait a second until your cursor changes to a green plus-sign (+) icon, and then drop the Up button wherever you want. Click that button to go up a folder at any time.
If you prefer a do-it-yourself option, this hint on the Mac OS X Hints website shows you how to make a similar button using AppleScript.
7. In Column View
All of these methods work in all Finder window views. But if you use Column View (choose View > as Columns), you can also use the Left Arrow key to move up in the Finder. This option is visually more logical than pressing Command-Up Arrow (which also works).
8. In List View
When you're using the Finder's List View (View > as List), you can navigate easily using the arrow keys. The Up Arrow and Down Arrow keys let you move around in the list. You can go up a folder by pressing Command-Up Arrow, and enter a folder by pressing Command-Down Arrow. If you press Command-Right Arrow, the folder will expand in the current list, without going into that folder; in other words, you'll see the entire list, plus the contents of the selected folder.
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