Ruby, I'm surprised by you, OK? You're not bash.

foo.rb

[jeff@maynard] (feature/master/registry_key_purge_values)(dirty)[█▆▁]1.8.7 /vagrant/modules/registry 
$ cat foo.rb 
#! /bin/bash
#
echo bar
[jeff@maynard] (feature/master/registry_key_purge_values)(dirty)[█▆▁]1.8.7 /vagrant/modules/registry 
$ ruby foo.rb
bar

@daniel-pittman

Right, but marking the file as executable and letting the system start the interpreter process is different than using the shell and passing the script directly to ruby:

Notice I do ruby foo.rb and not ./foo.rb

The syntax checking command for a ruby file is something like: ruby -W1 -c foo.rb

Ah. Yes, so I see. How precious.