title: regular expression to parse html title tag
body: <p>I need to parse a lot of html files in order to know which ones contain specific text within title tag.</p>
  
  <p>Let's suppose that titles are</p>
  
  <pre><code>file1.htm
  &lt;title&gt;100 text other text&lt;/title&gt;
  file2.htm
  &lt;title&gt;text 100 text other text&lt;/title&gt;
  file3.htm
  &lt;title&gt;text 1000 text other text&lt;/title&gt;
  file4.htm
  &lt;title&gt;text one hundred text other text&lt;/title&gt;
  </code></pre>
  
  <p>Following my example I need to find files name that contain 100 or one hundred, that is files 1,2 and 4.</p>
  
  <p>My problem is that I don't know how to write regular expression</p>
  
  <pre><code>gci "c:\my_folder" | ? {$_.extension -eq ".htm"} | 
  select-string -pattern '&lt;title&gt;*100*&lt;/title&gt;' |
  Select-Object -Unique Path
  </code></pre>
  
  <p>Please note, if this may be important for regexp, that title tag is not at the beginning of a row but in the middle.
  Thanks in advance.</p>