How to find out which package version is loaded in R?

Question

I am in a process of figuring out how to use my university cluster. It has 2 versions of R installed. System wide R 2.11 (Debian 6.0) and R 2.14.2 in non-standard location.

Answer 1

Simply use help(package="my_package") and look at the version shown.

This assumes there are no other package versions in the same .libPaths.