Arch Linux - apt-get update equivalent command?

Note: I agree with @larsks' comment that the best source here is the Arch wiki.

For example, this wiki entry https://wiki.archlinux.org/index.php/Pacman/Rosetta covers the operations for pacman in depth for people who previously used ("coming from"): dnf (Red Hat/Fedora), apt (Debian/Ubuntu), zypper (SLES/openSUSE) or emerge (Gentoo).

From that document, apt update && apt upgrade is equivelent to pacman -Syu.

The equivalent of apt-get update in Arch Linux is pacman -Syy.

pacman -Syu is equivalent to apt-get update && apt-get upgrade.

Might as well make this complete if it stays...

pacman -S <package> is apt-get install <package>