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| OS X (Apple) OS X is a line of Unix-based graphical operating systems developed, marketed, and sold by Apple. |
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#1
10-03-2012
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Using at utility on 10.8.2 not working
I am a beginner, trying to get basic background utilities like at and cron to work on mac os x.
I am typing the following at the prompt: at now + 1 minute open -a textedit ^D nothing happens at the appointed time. What to change? |
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#2
10-03-2012
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start with EXACTLY as it is in the example Code:
at now <<! cd /home/mydirectory ls -ltr > /tmp/my.lis ! If that fails to create the /tmp/my.lis, you need to start the cron daemon. Keep working until the above example works. Two points: you cannot use any interactive program like an editor or one that creates a window like a web browser. Post back here if you have trouble. The <<! bit is called a here document. Read up on them so you know what is going on. |
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#3
10-04-2012
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I did that, and it still didn't work. When you say "you need to start the cron daemon" do you mean I can't use at and need to use cron or that at relies on the cron daemon?
If so, what is a good way to start cron? classic crontab -e and enter some jobs? I'm working with a classic unix book, and thus far have found everything to work through the bash terminal in a pretty predictable way, until now. I know that Apple built a bunch of tools on top of the basic unix and that laucnhd has taken the place of cron and other traditional daemons - is that what we are dealing with here? |
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#4
10-04-2012
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Quote:
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#5
10-05-2012
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at is disabled in OS X. You can enable at with the following command -> Code:
sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.atrun.plist and disable at with -> Code:
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.atrun.plist |
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Don Cragun (10-05-2012) | ||
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#6
10-05-2012
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Thanks. That's what I needed. I assume cron can be cryogenically unfrozen in a similar way.
Last edited by sakurashinken; 10-05-2012 at 10:18 AM.. Reason: Choice of words |
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#7
10-05-2012
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In earlier versions of OS X cron is working. You just need to create a crontab. You can test if cron is running with Code:
sudo launchctl list | grep 'cron' #output 379 - com.vix.cron |
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