October 2001
Beginner
1024 pages
25h 8m
English
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Controlling Access to the cron and at Commands
Scheduling is so powerful that you as an administrator don't necessarily want your users to be able to have complete access to the cron and at commands. Let's say, for instance, that you have a troublesome user who insists upon running an IRC “eggdrop” bot, and every time you kill the process, it keeps coming back—because the user has set up a crontab file to restart the process if it's not running (checking every hour, for example). The user doesn't respond to email. Your options are either to disable the user's account (a fairly barbaric and messy option) or to restrict the user's access to the cron and at commands. This is done through the deny and allow files for both programs.
Normally, /var/cron/allow ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.