One-command installer for NamelessMC, a popular open-source forum software
I have only tested the installer on Ubuntu 22 & Ubuntu 24 but it will most likely work on any (modern) Ubuntu or Debian version.
Using curl:
curl -O https://installers.auri.lol/nameless.sh && chmod +x nameless.sh && ./nameless.sh
Using wget
wget https://installers.auri.lol/nameless.sh && chmod +x nameless.sh && ./nameless.sh
Do not run both, run whichever one you like better; I suggest using curl (the first one)