Regex - Delete all lines which don't contain a string? - Sublime Text
<p>I am looking for a regular expression that can help me delete all lines in sublime text which don't contain .</p>

<p>For example:</p>

<p>I have a text file with domains:</p>

<p><code>abc.com
def.com
ghi.com
com
jkl.com
com</code></p>

<p>I would like to use a regular expression to remove all lines not containing .
So the result should be like:</p>

<p><code>abc.com
def.com
ghi.com
jkl.com</code></p>

<p>Thx in advance for your help! :)</p>