View crontab running logs in Ubuntu

The cause is that the backup script of SCP on a server crontab fails to be run at regular intervals. It is okay to manually execute the script. Therefore, you need to find the cause from the crontab log, suddenly I found no cron logs under my/var/log. Here I will record how Ubuntu server views crontab log crontab record log modify rsyslog

Sudo Vim/etc/rsyslog. d/50-default.conf

Cron. */var/log/cron. log # Remove the annotator before cron.

Restart rsyslog

Sudo service rsyslog restart

View crontab logs

Less/var/log/cron. Log

Crontab problem locating view log/var/log/cron. log and/var/mail/$ user because the crontab running log is recorded in cron. log. When Sendmail is enabled, an SSH error message is sent to the current crontab running owner.

Solution: Delete the. Ssh/hosts file of the current host user.