Remove duplicate entries in Finders Open With menu

After seeing my list of entries in the Finder's "Open With" menu grow and containing an increasing number of duplicate entries, I figured it was time to try and fix this. Googling the matter revealed a number of outdated solutions. The problem was that the utility used had moved to another location on the disk.

The correct way of doing this on Snow Leopard is to use the following command:


/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user


This will regenerate the list, and for me, all the extra entries disappeared.