2011/2/10 Gerad S. <geradstemke / gmail.com>:
>
> `echo "#{someVar}" | ./some-script.py > "#{outputFile}"`

If you use Ruby 1.9.2, Open3.pipline() provides a way to run a pipline
without shell.

% ruby -ropen3 -e 'Open3.pipeline(["echo", "foo`bar`baz"], ["head",
"-6c", :out => "/tmp/qux"])'
% od -c /tmp/qux
0000000   f   o   o   `   b   a
0000006
-- 
Tanaka Akira