This is a 2 part series about creating shared folders for groups to use. In this first video, we use useradd, passwd, groupadd, and usermod to create the users and groups, and assign passwords and group memberships.
Once created we use cat and tail to look at the /etc/passwd, /etc/shadow, and /etc/group files to view the changes being made.
Finally, we login as the different users to confirm they are working properly.
Great Linux study resource: https://amzn.to/2YPrV8X