What is my mistake in Cron?

Question

linux

Hello.

I set up iptables on the server, and in order not to mess up and lose access, I added to the
crontab -e
line

#m h  dom mon dow   command
#Safemode
5 * * * * reboot

As a result, I configured the firewall, but today I looked into the cron - it turns out that I forgot to remove the task.

I looked uptime - and he never rebooted.

What have I done wrong? I ran the crontab -e command as root.

Answer 1

you need to either set the PATH variable in the crontab or write the full path:
/usb/sbin/reboot

Answer 2

Look at your root mail - there should be messages if the cron wrote something.
You can also check /var/log/syslog.

Answer 3

Maybe systemctl reboot
?
Well, and I hope that the user on the server is one root?

Answer 4

you need to either set the PATH variable in the crontab or write the full path:
/usb/sbin/reboot