title: ruby timeouts and system commands
body: <p>I have a ruby timeout that calls a system (bash) command like this..</p>
  
  <pre><code>Timeout::timeout(10) {
    `my_bash_command -c12 -o text.txt`
  }
  </code></pre>
  
  <p>but I think that even if the ruby thread is interrupted, the actual command keeps running in the background.. is it normal? How can I kill it?</p>