Yes. -Syyu is for “Sync (repository action), database update (forced), upgrade packages”, in that order (though the flags don’t have to be). Doubling a lowercase character like yy or uu is to force the operation. yy in particular shouldn’t be needed, as it only overrides the “is your database recent” check. Unless you’re updating more than every 5 minutes, using a single y is perfectly fine.
Why -Syyu and not -Syu?
You … you understand pacman cli switches?
No, I just hold my y key until there are many many ys.
y?
-Syyyyyyyyyyyyyu
Yes. -Syyu is for “Sync (repository action), database update (forced), upgrade packages”, in that order (though the flags don’t have to be). Doubling a lowercase character like yy or uu is to force the operation. yy in particular shouldn’t be needed, as it only overrides the “is your database recent” check. Unless you’re updating more than every 5 minutes, using a single y is perfectly fine.