title: Check multiple files exist in directory
body: <p>How to find multiple files present in a directory in <code>ksh</code> (on<code>AIX</code>)</p>
  
  <p>I am trying below one:</p>
  
  <pre><code>if [ $# -lt 1 ];then
      echo "Please enter the path"
      exit
  fi
  path=$1
  if [ [ ! f $path/cc*.csv ] &amp;&amp; [ ! f $path/cc*.rpt ] &amp;&amp; [ ! f $path/*.xls ] ];then
      echo "All required files are not present\n"
  fi
  </code></pre>
  
  <p>I am getting error like <code>check[6]: !: unknown test operator</code> //check is my file name.</p>
  
  <p>what is wrong in my script. Could someone help me on this.</p>