Frequently Asked Questions

We have collected common questions about our services and tools.


Where can I report a bug?

When you discovered an issue with Lynis, this can reported in two ways:
1. via, 2. as an issue on GitHub


How does a license renewal work?

When you want to renew a license of Lynis Enterprise, simply order again. If you already have a license, we will renew your current license code. This way no configuration changes are required on your end.


How can I change the location of the Lynis report?

Run Lynis with --report-file /root/new-report.dat

Does Lynis need root permissions?

Lynis does not need root permissions to run on a system. It will be able to run most of the tests as a non-privileged user. For the best audit results, we do recommend to use root permissions though. This can be achieved via sudo or switch to the root user.

Can Lynis create a HTML report?

The number of output formats is kept to a minimum. Each format would introduce overhead and therefore impact the performance of the tool. By default, there is a screen output and a data report in a key-value format.

If you like to have an HTML file of the screen output, run 'lynis audit system | ansi2html -la > report.html'. The ansi2html tool can be installed with your package manager (e.g. yum install python-ansi2html or apt install kbtin).

For a more in-depth report in HTML and other formats, there is also the Lynis Enterprise version. This web-based solution provides browsable data and export to CSV, JSON, PDF, and makes the data available via API.

Where are the Lynis profiles stored?

Lynis looks in a few directories, like /etc/lynis. The easiest way to discover what profiles Lynis discovered, is running: lynis show profiles

How often should I run Lynis on my system?

As security is an ongoing process, we suggest running Lynis daily. This can be done automatically via a scheduled cronjob.

Lynis takes a long time to run. What can I do?

Use lynis audit system --debug --verbose to see which test is taking a long time. Consider disabling the particular test.

How can I see the active settings of Lynis?

Use 'lynis show settings' to determine the combined settings of al discovered profiles.

Lynis Enterprise

How to solve error "too_many_lines"?

Determine the related field that is causing this with awk -F= '{print $1}' /var/log/lynis-report.dat | sort | uniq -c | sort -b -n | tail -3 | sort -r -n

This command will show the three most repeated lines. Use the grep command to find the related test. If the test starts with "PLGN", perform the grep in your PLUGINDIR (lynis show plugindir), otherwise use the INCLUDEDIR (lynis show includedir).

Can I host Lynis Enterprise on-premises?

Yes, we have a self-hosted version (on-premises) available. Companies who prefer to keep data internally, or have multiple business units, can leverage this option.

Can I download or see the uploaded data from Lynis?

The data that is being uploaded by the Lynis client can be found in /var/log/lynis-report.dat. It contains the most important data parts found during the audit.


Is Lynis really free?

Yes, it is really free to use. Also, it is open source and fairly easy to understand, as it is written in shell script. Have a look at the GitHub page to see how it works.


Where can I find up-to-date packages of Lynis?

Go to


How often is there a new release of Lynis?

Typically we release every few months a new version of Lynis. How in the meantime you can always check GitHub for the latest development version.

Got another question? Use the contact page and have a technical sales engineer or developer help you.