How to upgrade Nessus

To upgrade Nessus:
  1. go to the download page http://www.tenable.com/products/nessus/select-your-operating-system and download the package for you computer
  2. Stop Nessus Service /etc/init.d/nessusd stop 
  3. Install package (Ubuntu) : dpkg -i Nessus-5.2.4-ubuntu1110_amd64.deb 
  4. Restart Service # /etc/init.d/nessusd start 
Sample Output
# /etc/init.d/nessusd stop 
 
# dpkg -i Nessus-5.2.4-ubuntu1110_i386.deb 
(Reading database ... 19831 files and directories currently 
installed.) 
Preparing to replace nessus 5.2.3 (using Nessus-5.2.4- 
ubuntu1110_i386.deb) ... 
 
[..] 
 
# /etc/init.d/nessusd start 
 
Starting Nessus : . 

Update plugins with 

sudo /opt/nessus/sbin/nessus-update-plugins