Script to install the official 7-Zip (64-bit Linux x86-64) from https://www.7-zip.org/
Keep in mind that it might not take te newest since the version is currently hard-coded

Clone and then run the script as root, it should do the downloading, unpacking and installing for you :)

Don't know how to run a script?
Well… first make sure it can be executed like this: sudo chmod +x ./install.sh after this start the script as root: sudo ./install.sh

Can't you do that for me?
Well with this command it's basically copy and paste
sudo curl https://raw.githubusercontent.com/MrMinemeet/Install7zz/main/install.sh | sudo bash

It's pretty similar to 7z from the p7zip package, but instead you have to use 7zz for the official one that you just installed ;)