Background: what "all-2.0.tar.gz" likely is
/opt/nessus/sbin/nessuscli update
/opt/nessus/sbin/nessuscli --version
The file all-2.0.tar.gz is a compressed archive provided by Tenable that contains the complete set of Nessus plugins. download nessus-update-plugins all-2.0.tar.gz
sudo /opt/nessus/sbin/nessuscli update nessus-update-plugins\ all-2.0.tar.gz Background: what "all-2