How to check if cron is working on Ubuntu 20.04?

I am trying to test a cron job.

When I run crontab -l the output is:

*/1 * * * * curl >> /home/log/crontest.log 2>&1

I also have the following to set cron log in the /etc/rsyslog.d/50-default.conf:

cron.*	/var/log/cron.log

And created a file /var/log/cron.log and /home/log/crontest.log.

I restarted the system, sudo service rsyslog restart.

But nothing is logged.

Q1. Is there any way that I can test if the corn is working? Q2. What could be the reasons that the cronjob is not working?

Submit an answer

This textbox defaults to using Markdown to format your answer.

You can type !ref in this text area to quickly search our full set of tutorials, documentation & marketplace offerings and insert the link!

Sign In or Sign Up to Answer

These answers are provided by our Community. If you find them useful, show some love by clicking the heart. If you run into issues leave a comment, or add your own answer to help others.

Site Moderator
Site Moderator badge
May 18, 2021
Accepted Answer

Hello, @okadashinichi2819

You can manually execute the cron job command in your shell and check for any errors. If the cron is executed fine then it should work when configured to run at specific times.

You can also check our tutorial on how to setup cron jobs:

You can also use sites like this one to generate the exact time format for you:

Regards, Alex

Hello you can also view content of /var/log/syslog to watch crons and see if they are coming at the correct time.

Try DigitalOcean for free

Click below to sign up and get $200 of credit to try our products over 60 days!

Sign up

Featured on Community

Get our biweekly newsletter

Sign up for Infrastructure as a Newsletter.

Hollie's Hub for Good

Working on improving health and education, reducing inequality, and spurring economic growth? We'd like to help.

Become a contributor

Get paid to write technical tutorials and select a tech-focused charity to receive a matching donation.

Welcome to the developer cloud

DigitalOcean makes it simple to launch in the cloud and scale up as you grow — whether you're running one virtual machine or ten thousand.

Learn more
DigitalOcean Cloud Control Panel