Linux yum update command tutorial

1 How does yum update work?
2 Update without gpg checking
3 Update from a local repo
4 Show patches
5 Update a single package
6 Update all but one package
7 Exclude multiple packages
8 Check when last yum update ran
9 Rollback (revert) update
10 Clean up a failed yum update (Troubleshooting)
11 Skip errors
12 Get a list of packages that need an update
13 Difference between yum check updates and list update
14 Notify when updates are available
15 What port does yum update use
16 Yum update vs upgrade

https://likegeeks.com/yum-update-command/