When using Nautilus you can use CTRL+L to display the addressbar. How do you revert back to the pathbar? Is there a shortcut key?
Edit: What you want to do is push the / key to type in an address. After you type it in, it will automatically revert to the pathbar (which is called 'breadcrumbs', by the way).
To permanently change it, open a terminal and type:
On the left hand side, expand
Now on the right-hand side, check / uncheck
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