~/.cvsrc, ~/.cvswrappers ~/.cvsrc is the main CVS configuration file. This file is used by users to specify defaults for different cvs commands, for example to make all cvs diff commands run with -u, a user would add diff -u to their .cvsrc file. ~/.cvswrappers specifies wrappers to be used in addition to those specified in the CVSROOT/cvswrappers file in the repository.