Solaris 2.x への patch の当て方

% perl -pe 's/snprintf/__snprintf/g;' <procmail-maildir.patch> procmail-maildir-sol2x
% cd procmail-3.11pre7
% patch -p1 < procmail-maildir-sol2x

# 参考 http://www.ranney.com/lists/qmail/msg00464.html