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Sometimes you can slip and create a file whose name starts with a dash (-), like -output or -f. That's a perfectly legal filename. The problem is that Unix command options usually start with a dash. If you try to type that filename on a command line, the command might think you're trying to type a command option.
In almost every case, all you need to do is "hide" the dash from the command. Start the filename with ./ (dot slash). This doesn't change anything as far as the command is concerned; ./ just means "look in the current directory" (Section 1.16). So here's how to remove the file -f:
% rm ./-f
(Most rm commands have a special option for dealing with filenames that start with a dash, but this trick should work on all Unix commands.)
-- JP
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| 14.12. Using Wildcards to Delete Files with Strange Names |  | 14.14. Using unlink to Remove a File with a Strange Name |
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