Welcome to sharing free software
First thing, you need to realise Linux is not Win-OS. Not by a long shot. It has a different code base, philosophy, architecture and above all, mindset. You can find countless sites dealing with explaining all this, in essence it comes down to “do your homework/due diligence and if you can’t figure it out on your own, feel free to ask and we’ll help”. Notice the entire sentence in quotes, unfortunately many newbees make the mistake of dealing with Linux help questions the way they’re accustomed to on Win-OS forums, where only the latter part seems important
Anyway, I digress.
By now you’d probably realise Linux does things differently. One major difference is the use of software repositories (akin to warehouses, libraries) to install stuff from. They also have package managers who deal with dependencies of whatever software package you want to install. Notice the plural here, there are several, some better then others. In short, choose a Linux distro that’s based on the apt package manager, i.e Debian or derivatives like Ubuntu, Mint and Devuan. It’s by far the best in conflict resolving for dependencies.
Assuming you’ve followed my advise and used for example Linux Mint, installing OBS is actually quite simple:
sudo apt-get install obs
Let’s break down this command (also known as a one-liner), there’s loads of detailed explanation on the web if you want to know the nitty-gritty of it, this is a quick summary:
sudo is a way to acquire administrator rights with your regular account.
apt-get this is the actual tool/package manager. It has scores of useful options, the man pages (text-based manuals, really) tell you all you need to know about it.
install this is one of the aforementioned options and seems self-explanatory, right?
obs this is the package you want to install. It’s a so-called meta-package, meaning by itself it doesn’t install anything, but its dependencies give you a fully fledged working setup. You can add multiple packages, separated by a space, so
obs vlc will install both OBS as well as VLC (well-supported video player and multi-tool for video)
Learn about the (in)famous man pages in a terminal by typing:
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(note: not mine!)