以下に書いてあるのは、安全の一番甘い passwd 方式
makoto@a 8:30:53/981024(~)> cvs rdiff -u -r d19981011 -r d19981016 emacs-20 >! /tmp/19981011-19981016.patch cvs rdiff: Diffing emacs-20 lock.c:173: failed assertion `strncmp (repository, CVSroot_directory, strlen (CVSroot_directory)) == 0' Abort (core dumped) makoto@a 8:31:03/981024(~)> cvs init