kazaam wrote:

>         system("./ati-driver-installer-8.40.4-x86.x86_64.run --buildpkg 
> Ubuntu/feisty")
> always does nothing but failing

Some commands don't tell their environment when they fail. If you have a 
verbose mode, try this:

    response = `run ... --verbose ...`

Now use Rexexp to interpret the response and detect success or failure.

-- 
  Phlip
  http://www.oreilly.com/catalog/9780596510657/
  "Test Driven Ajax (on Rails)"
  assert_xpath, assert_javascript, & assert_ajax