Problem with /etc/rc.d/init.d/autofs:
Say, I have in my yellowpages two maps:
/users auto.users
/user auto.users

grep on line 107 causes /user to be skipped because /user matches the known
map /users. The correct solution would be to grep for whole words:
-a "`echo "$knownmaps" | grep \ $dir\  = ""
                              ^^     ^^ <- blank spaces