View the version number under Linux to see the normal users that exist

1. View version number

uname -A              # # view all information uname --help        # # View Help on uname commands

2. View existing normal users

vim/etc/passwd         # # View passwd file (user's profile)

Get the information as shown:

The format of each line in the file is  user name: Password placeholder x: User id: Group ID
First root is the root user
User ID >=500 for normal user

For example:
Root   
   User id=500
User1   
User2   User id=502
User3   User id=503

In this way, we can use this command to see how many ordinary users exist when we are not using Linux for a long time, and never let go of any of them!

View the version number under Linux to see the normal users that exist