To delete the test files, use the rm command. So, to remove our original test file, we'd type rm ~/Documents/Test/TestFile.rtf That will delete the file without asking for confirmation. If you're deleting files, it's good practice to double-check, so to add a confirmation step put -i immediately before the file name.
Those are just a few of the most commonly used Terminal commands. But the should give you a flavour of how to use this most under-appreciated of OS X utilities. It should also show you that there's nothing to fear in using Terminal, so long as you take the time to learn the basics and understand what your doing.
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