Re: restart crontab

[Greg Wooledge <greg@wooledge.org>]

On Sat, Dec 07, 2024 at 07:20:12 +0800, Bitfox wrote:
> How can I restart crontab daemon?
> I tried "service crontab restart" and "dpkg --list |grep crontab", they have
> no help.

crontab(1) is the name of the command that you use, as a user, to
display or alter your personal crontab.

The daemon (service) that runs your crontab jobs, however, is usually
named "cron".  Or possibly "crond" on some systems.

hobbit:~$ ps -ef | grep cron
root         826       1  0 Dec05 ?        00:00:00 /usr/sbin/cron -f
greg       57136    1769  0 18:44 pts/14   00:00:00 man 1 crontab
greg       57161    1765  0 18:44 pts/13   00:00:00 grep cron

Given that the daemon's name is "cron", the service name is probably
similar.  Let's just take a guess that it's the same:

hobbit:~$ systemctl status cron
● cron.service - Regular background program processing daemon
     Loaded: loaded (/lib/systemd/system/cron.service; enabled; preset: enabled)
     Active: active (running) since Thu 2024-12-05 06:48:41 EST; 1 day 11h ago
       Docs: man:cron(8)
   Main PID: 826 (cron)
      Tasks: 1 (limit: 18737)
     Memory: 10.6M
        CPU: 2.202s
     CGroup: /system.slice/cron.service
             └─826 /usr/sbin/cron -f

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