services

Over the last months I've been testing various online services that I find to be among the best alternatives to mainstream services: 1. DuckDuckGo or Searx instead of Google, Bing, Yandex, Yahoo and others 2. Rumble instead YouTube 3. Lingva Translate instead of Google Translate, Bing translate...

Hi! I have seen many ways to manage services in Ubuntu. Such as Systemctl - sysctl - systemd - /etc/init.d scripts and so on. Some of them seem to work always, whereas some not. ¿What is the difference among them all? Thanks!