Mac OS X's Services menu (Terminal Services) exposes a collection of services that can work with the currently running application. In the case of the Terminal, the services operate on text that you have selected (the pasteboard). To use a service, select a region of text in the Terminal, and choose an operation from the Services menu. Mac OS X comes with several services, but third-party applications may install services of their own. When you use a service that requires a filename, you should select a fully qualified pathname, not just the filename, because the service does not know the shell's current working directory. (As far as the service is concerned, you are invoking it upon a string of text).
Here is a list of the services available in the Mac OS X Services menu:
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