the-practical-linux-hardening-guide VS flathub

Yeah........ go check out the stig bible

Pretty much any will do. Ubuntu a bit less. I'd suggest something like Pop_OS or Manjaro if you want to be a tiny bit more technical (it's "Arch" but without all the headaches of Arch). As for making linux as secure as possible you're going to have to do some extra things. Trim Stray's Practical Hardening Guide, RedHat's, Madaidans Insecurities (2021), and of course Arch Wiki. These guides will be good no matter what distro you use (Arch Wiki is also the go to place to get more details on most everything linux. Distros are 99% the same so don't fret about getting the right distro).

No, flatpak doesn't use distributions package managers. It doesn't need RPM/DEB packages to work. Today if you want to distribute a flatpak application, you build it once, upload it to flathub.org and it will show up in countless distributions like SteamOS 3 and Pop_OS!.

if you wanna install in terminal using flatpak please go to : https://flathub.org/ to make your life easier.

Yes you can install anything available here https://flathub.org/

Flathub: https://flathub.org

All flathub.org flatpaks are available in Discover. You can have a look there to see if you can find what you need. Discord, Spotify, Zoom, MS Teams and ONLYOFFICE (if you need good MS Office compatibility) are all there. I think it comes with Firefox pre-installed, but I'm pretty sure the Deck UI's non-steam tab comes with a one-click installer for Chrome, if that's more your speed. There's also a Chromium flatpak in Discover.

Name Title URL Collection ID Subset Filter Priority Options … … Homepage Icon fedora Fedora Flatpaks oci+https://registry.fedoraproject.org - - - 1 system,oci … … - - flathub Flathub https://dl.flathub.org/repo/ - - - 1 system … … https://flathub.org/ https://dl.flathub.org/repo/logo.svg

The Discover store is the KDE application for installing/updating/removing things - which in the Steam Deck is used to handle Flatpaks from Flathub.

Linux users typically do not install software like this, we use a package manager (a bit like the app stores on phones) to install stuff instead. SteamOS comes with Flatpak, so you can go over to FlatHub and start installing stuff.

You can install anything from https://flathub.org/.