Twelve Days of Shell

'Seven files that start with Santa' is actually about filenames. That's pretty confusing especially since users are primed with file contents from the previous exercises already.

And from pipers piping description I had no idea what was wanted of me.

I think that may be the point, the subtlety of "lines of pipers piping" got me for a second - as opposed to the 11 pipers piping files (which is what I thought it wanted).