How are cron.allow and cron.deny read?

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http://www.unix.com – Hi, all! I was working on my Debian, minding my own business but then I wanted to see what happened if the same user was included on both cron.allow and cron.deny :p I would have bet that cron.deny was going to override cron.allow for security reasons, but my computer proved me wrong: cron.allow seems to override cron.deny, so if you are on both, you can still cron jobs. I'm curious about this. Does cron read these files alphabetically? How is this behavior explained? I've been googling the answer but I only found tutorials on how to use cron. Thanks!! (HowTos)