I am going to schedule a job by using at command. Here I tried the following command:
$ at now + 1 minuteecho 'Test at command'<EOD>I saw the job is scheduled by using at -l. However, I saw no echo out.
I guess that I may need to add user to at.allow file. I cannot find at.allow in my Mac (Snow Leopard). Not sure what I need to do to test this at command?
Solution:
To enable the needed atrun daemon, as man atrun says, execute:
launchctl load -w /System/Library/LaunchDaemons/com.apple.atrun.plistas root (e.g. via sudo). Once you’ve done that, /var/at/ will be the key directory (though the simplest way is to use at as root — e.g., once again, by sudo!-).

