Upgrade Nessus on Linux
Download Nessus
From the Tenable Downloads Page, download the latest, full-license version of Nessus.
Use Commands to Upgrade Nessus
From a command prompt, run the Nessus upgrade command.
Note: Nessus automatically stops nessusd when you run the upgrade command.
Start the Nessus Daemon
From a command prompt, restart the nessusd daemon.
This completes the process of upgrading Nessus on a Linux operating system.