rcs and graphical diff

I have a machine running Ubuntu 6.06. Source files under rcs (no git available). I need to visually compare older revs of files with the checked out version. Until now I have moved the file and compared. mv test.c tmptest.c co -r1.16 test.c xxdiff test.c tmptest.c mv tmptest.c test.c I know I can make this in a script, but is there a better way to do this? Without touching test.c?