Hey there :) Complete Linux Noob here. For My course at univerisity I need to install the Spidermonkey Js Shell.

https://archive.mozilla.org/pub/firefox/nightly/latest-mozilla-central/

so far I have only downloaded and unpacked the files (js libnspr4.so libplc4.so libplds4.so) but I have no clue how to install these files.

as an alternative I also found these commands to install the Jshell on this site https://askubuntu.com/questions/892498/how-to-install-and-configure-mozilla-spidermonkey-js-engine-in-ubuntu-server-16 however, I don't have a clue if that is exactly what I need

Thanks in advance for your help

BR