I use run-parts to run all scripts under a directory,the same way crontab does. But the jobs deny and jobs allow don't block any of the scripts in the directory.
rajeevs@rajeev:/home/rajeevs/test$: ls
a
b
jobs.deny
$:cat jobs.deny
a
b
$:run-parts .
hello a
hello b
Any idea about this strange behavior?

run-partsknows aboutjobs.deny? (Checkman run-parts.) Debian's (packagedebianutils) doesn't. – sr_ Dec 5 '12 at 8:21