Well snap itself isn’t proprietary, the backend server distributing the snaps is.

nice pizza

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ligma balls

It’s from the steam year in reviee. It should show up on your steam frontpage

this thread is hilarious

S is for sync, which installs packages from the repositories. u is for upgrade, which upgrades out-of-date packages. y causes pacman to refresh the package databases. In short, it upgrades all packages that are out of date. It’s a very standard command and not dangerous lol. Btw, with yay just typing in “yay” without -Syu does the same thing, which is convenient