title: Reset variable using shell
body: <p>I use the shell script to reset variable.</p>
  
  <pre><code> #!/bin/sh 
  reset_var() { 
  while [ "$#" -gt "0" ] do  
   echo "\$1 is $1"   
  unset $1 done 
  } 
  
  i=50  
  j= 40 
  reset_var i j
  </code></pre>
  
  <p>but this it does not work!</p>
  
  <p>the purpose is to reset i and j variable to 0</p>
  
  <p>is there any way to reset many variables !  </p>