title: How to set bash execution speed
body: <p>I am trying to build a mailer. Everything works just fine, but it's too slow.</p>
  
  <p>Here is the code for the bash file</p>
  
  <pre><code>#!/bin/bash
  
  FILE=$(cat $1)
  
  for i in $FILE
  do
  php send.php $i
  done
  </code></pre>
  
  <p>My question is how can I make it work faster because it runs very slowly.
  I have already tried changing the sleep but no success.</p>
  
  <p>How could i do it run like: 
      select 10 lines and do
      php send.php $i1
      php send.php $i2
      etc</p>