'npm' is not a Meteor command

I had previously installed Meteor months ago with the intention of giving it a go, but never got around to it. Fast forward to today, I tried to reinstall Meteor using the latest installer for version 1.3. Then I proceeded to follow the tutorials where one step required me enter the command:

meteor npm install

I received the following error:

'npm' is not a Meteor command. See 'meteor --help'.

It turns out that my version of Meteor was not actually updated by the installer. To check my meteor version I used the following command:

meteor --version

Which showed me "Meteor 1.2.0.2".

Solution

To upgrade meteor, run the following command:

meteor update

Reference: https://forums.meteor.com/t/installing-meteor-1-3-with-an-existing-1-2-left-in-place/20670