Extracting File Type

Hi Everyone,

Trying to extract the File Type from Files (ex: pst, xml, etc). I have tried to split it:

eval split =Split(File,".") | eval type=mvindex(split,1)

But a problem occurs when files like: "2012-12-08 15.36.01.jpg" show up due to the extra "." in the file name.

Is there any recommended rex, or method that can be used to pull the file type from the end of the File name instead of trying to split everything up.

Thanks