sudo apt-get update && apt-get dist-upgrade
sudo apt-get install openvas
sudo gvm-setup
sudo gvm-start
http://localhost:9392
sudo runuser -u _gvm -- greenbone-nvt-sync
sudo runuser -u _gvm -- greenbone-feed-sync --type SCAP
sudo runuser -u _gvm -- greenbone-feed-sync --type CERT
sudo runuser -u _gvm -- greenbone-feed-sync --type GVMD_DATA

1. sudo gvm-stop
2. sudo nano /usr/lib/systemd/system/greenbone-security-assistant.service
3. Make the changes
4. Ctrl+O
5. hint Enter
6. Ctrl+X
7. sudo systemctl daemon-reload
8. sudo gvm-start