Nessus
# Download link
# https://www.tenable.com/downloads/nessus
# Registration link
# https://www.tenable.com/products/nessus/nessus-essentials
# Install nessus
# https://docs.tenable.com/nessus/Content/InstallNessusLinux.htm
dpkg -i Nessus-<version number>-debian6_amd64.deb
# Start & stop
service nessusd start | restart | stop
# Uninstall nessus
# https://docs.tenable.com/nessus/Content/RemoveNessusLinux.htm
dpkg --purge nessus
# Erase registration and settings
# https://docs.tenable.com/nessus/commandlinereference/Content/ResetRegistrationAndEraseSettings.htm
/opt/nessus/sbin/nessuscli fix --reset
/opt/nessus/sbin/nessuscli fix --reset-all