How to determine which packages need upgrading in Arch Linux?

Question

I know that pacman -Su upgrades all packages. But how can I get just the list of packages that need upgrading?

Answer 1

Looking at the man page something like

pacman -Sy

to sync the database up to the latest version followed by

pacman -Qu

to

-u, --upgrades

Restrict or filter output to packages that are out of date on the

local system. (Only package versions are used to find outdated packages, replacements are not checked here.) This option works best if the sync database is refreshed using -Sy.