How do I update an existing copy of the source to the current version?

Ans) As the common code changes, you might need to update your copy to have the lastest version. To do that, use: cvs -q update Any changes will be merged into the files on your disk, and you should then be up-to-date with your own changes still present. The "-q" option removes a lot of informational messages as CVS enters the several directories in the project; the command still works if you omit it, but it will be harder to see any real error messages.