title: cp: missing file operand
body: <p>I kept a cp command in alias command to take backup of a file if we remove any file using rm command.But, got the error as cp:missing operand</p>
  
  <pre><code>Example:
     $alias rm1='cp $@ -t ./backup  &amp;&amp;   rm $@'
     $rm1 arrays.sh
  </code></pre>
  
  <p>output:
         cp: missing file operand
         Try 'cp --help' for more information.</p>