title: unterminated address regex while using sed
body: <p>I am using the below command but while running the command in linux, getting the below error.</p>
  
  <pre><code>sed -n '/^[2015/01/01 03:46/,/^[2015/01/01 03:47/p' &lt; Input.txt
  sed: -e expression #1, char 42: unterminated address regex
  </code></pre>
  
  <p>KIndly help me on this.</p>