If I want to update NR on my RasPi, I use this command:
bash <(curl -sL https://raw.githubusercontent.com/node-red/raspbian-deb-package/master/resources/update-nodejs-and-nodered)
and it works.
But it doesn't work for Ubuntu. Fair enough.
But it begs the question - for me - is there one (note: ONE) command?
I've seen posts but it is a heap of commands entered one after the other.
Which seems strange if it is done for the RasPi, there isn't one for Ubuntu.
Oh, the commands I see are also (I believe) dated as they point to old versions.
Or it is implied it is for older versions, so those commands are really specific for that version and can't be used for subsequent updates.