I find that much more elegant; four lines of bash script which would run on nearly any Unix-like system, versus 49 (or a bit less if you drop the whitespace) of Scala, which won't. Even the shebang is three lines instead of one!

I guess this example is nice as an introduction to Scala, but it doesn't seem like Scala is a particularly appropriate replacement for any of the things one would normally use a shell script for.