How do you determine the article ID from the long guid filename format?

It would be very useful sometimes to determine the article Id number from the guid name or to get the guid name from the

article ID number.

Sometimes a log error references a guid name. Which isn't too bad because you can go to the distribution point and look through the folders and or install the contents.

The other way around, finding a specific update from a list of guid number folders can be a bit of a job.

Thanks