Regular expression for removing the page part of a url

Can someone show me a regex that will remove the page part from a string.

My strings are either

/section/ 
/section/page.html
/section/subsection/page.html

I need a regexp that would return

/section/
/section/
/section/su开发者_运维技巧bsection/

You can assume the file ext is always .html and the strings are relative (no http://host:port)

Thanks!

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I think you're looking for:

/(.*/)+