Without further context it is not easy to understand the meaning... If in your text the word "filename" has some sort of graphical highlight, then my first suggestion should be the correct one. In this case, the sentence would be about a command called "filename". If this is not so, then maybe my second suggestion is right (at least this is how these terms are translated). However, with the little context you have provided, I feel this meaning is not very logical, as filenames usually don't "execute" anything...