openSUSE
Package manager
Choose the package manager guide for your openSUSE edition.
Leap and Tumbleweed both use zypper, but their update commands differ. Choose the guide for the edition you use, or read Leap vs Tumbleweed.
openSUSE Leap
Leap follows a fixed release model.
Read the openSUSE Leap package manager guide.
openSUSE Tumbleweed
Tumbleweed is a rolling release that updates through new snapshots.