I am migrating individual user's crontabs to /etc/cron.d, as that would allow proper backup, restore and versioning.
So far, as I understand the only difference between user's crontabs and the etc ones is that you have to specify the user as the 6th column. Is this right?
And my main question, for which I couldn't find the answer anywhere on the internet:
What is the right way to use
@reboot in /etc/cron.d or /etc/crontab?
@reboot root command?