Am Sonntag, 3. Oktober 2010, 13:51:44 schrieb Thomas Buckley:
> Hi All
> 
> I'm trying to write a simple program that when given a a few
> paragraphs of plain text from a file, will extract various
> metadata on the file...i.e. Number of paragraphs, number of lines,
> number of words, etc...
> 
> I have spent endless hours looking through the Rdoc documentation
> but cannot find any useful info of examples on how to do this, is
> it actually capable of doing this?
> 
> Thanks

Sure can, it's a common exercise ;)

http://www.apress.com/book/downloadfile/4436

These are the source files to "Beginning Ruby From Novice to 
Professional" Look at chapter 4, analyzer.rb.