title: Rename multiple files based on pattern in Unix
body: <p>There are multiple files in a directory that begin with prefix <code>fgh</code>, for example:</p>
  
  <pre><code>fghfilea
  fghfileb
  fghfilec
  </code></pre>
  
  <p>I want to rename all of them to begin with prefix <code>jkl</code>. Is there a single command to do that instead of renaming each file individually?</p>