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.

# rpm -Uvh Nessus-<version number>-es6.i386.rpm

# rpm -Uvh Nessus-<version number>-suse11.i586.rpm

# rpm -Uvh Nessus-<version number>-fc20.x86_64.rpm

# dpkg -i Nessus-<version number>-ubuntu910_i386.deb
Start the Nessus Daemon
From a command prompt, restart the nessusd daemon.

# service nessusd start

# /etc/init.d/nessusd start
This completes the process of upgrading Nessus on a Linux operating system.