If I want to check for updates from the official repositories it’s easy enough to run the command ‘checkupdates’, which shows the list of pending updates to be installed.
However if I wanted to check for pending AUR updates, there doesn’t appear to be a command for this, unlike in say, Manjaro where running ‘pamac checkupdates’ shows pending updates for both AUR and official repositories and are displayed separately. I have seen ‘checkupdates-aur’ mentioned on a couple of sites, but it isn’t rercognised. I’ve looked at options for ‘yay’, but there doesn’t appear to be one for pending AUR updates.
You don’t want to use yay with no options unless you are actually doing your your updates. This is because if you are only checking, you don’t want to update your databases.
I use paru however you can use yay for checking if there are AUR updates yay -Qu this will just show a list of apps to be updated but doesn’t start any update process.
‘yay -Sua’ seems to be the command I was looking for. I did not see this option mentioned on any of several websites I looked at for ‘yay’, although there were plenty of ‘yay -Su’ type examples.