title: Bash Run command for certain time?
body: <p>I am making a bash script for my use. 
  How can I run a command for certain time, like 20 seconds and terminate command? 
  I tried a lot of solutions but nothing works, I also tried timeout command with no success. Please give me some solution for this.</p>
  
  <p>For example: I want to run this command in script and terminal after 10 sec </p>
  
  <pre><code>some command
  </code></pre>