title: shell script grep to grep a string
body: <p>The output is blank fr the below script. What is it missing? I am trying to grep a string</p>
  
  <pre><code>#!/bin/ksh    
  file=$abc_def_APP_13.4.5.2    
  if grep -q abc_def_APP $file; then
   echo "File Found"
  else
   echo "File not Found"
  fi
  </code></pre>