ubuntu/debian crontab no working

[h2title]1.check[/h2title]

service cron status

[h2title]2. open cron log[/h2title]

sudo vim /etc/rsyslog.d/50-default.conf
sudo service rsyslog  restart

[h2title]3.check log[/h2title]

less -10 /var/log/cron.log

if see

No MTA installed, discarding output

need add outprint like : >> /tmp/cron_log.txt

crontab -e

add test order

* * * * * echo "Hello world!" >> /tmp/cron_log.txt

or you don’t want log

* * * * * echo "Hello world!" >/dev/null 2>&1