23.14 Handling a Filename Starting with a Dash (-)

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" ( 1.21 ) . 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.)