How to use command "at" to execute shell in MacOS
macos, shell
Solution
I noticed "SEE ALSO" in man page of at:
SEE ALSO
nice(1), sh(1), umask(2), campact(5), atrun(8), cron(8), sendmail(8)
In atrun(8), a solution is provided.
Execute the following command as root to enable atrun:
launchctl load -w
/System/Library/LaunchDaemons/com.apple.atrun.plist
After I sudo this command, and then restart my computer, at become available.
Problem
I want to execute some shell script once in MacOS. At first, I tried the "at" command in Ubuntu and it performed well. But when I use same method in MacOS, things goes wrong I typed: ``` $ at now + 2 minutes ls -al > tmpfile (ctrl+d,EOF) ``` The job was added successfully. The output of "at -l" is: ``` (some other output) 11 Fri Jul 19 15:18:00 2013 ``` But after 15:18 ,tmpfile was not changed. I want to know how to use "at" command in MacOS corectly or is there any other method to execute some shell script at certain time once(not periodic)