Instructions are available at http://webwork.maa.org/wiki/R_in_WeBWorK. If you need help installing Rserve on a particular flavour of linux, there may be someone who can help here.
Re: R-server is working in version 2.13?by Danny Glin - Number of replies: 0
Everything that WeBWorK needs to interact with the R server is included in 2.13. You will still need to install the R server separately on your system.