cvs diff will compare a file (or files) from the local directory with the version(s) in the repository.
Can be used with -r option to compare specific revisions or tags of a file. Example:
$ cvs diff -r 1.3 -r1.4 hello.py Index: hello.py =================================================================== RCS file: /home/cvsroot/hello/hello.py,v retrieving revision 1.3 retrieving revision 1.4 diff -r1.3 -r1.4 8a9 > count = 0 11c12,13 < print letter --- > print " " * count, letter > count = count + 1 $
Can be used with -c or -u to provide other types of diff outputs.