Linux User and Permissions Basics 4 Linux Password change

1 for students who just use Linux, the most painful thing is to use the root user to execute some commands, but do not know the root password

2 I'll just explain how to change the password for a normal user and root user

1 Change the password for root

1 The first thing to say is that the root of the Linux system does not have a password by default.

2 we can go to see the root of the/etc/shadow under the corresponding password for!, that's the default no password

3 We're going to start modifying the root user's password.

1 First step: We want to log in as a normal user, and this ordinary user can use sudo to perform administrator privileges

2 Use the command sudo passwd root to modify the root password, and then just follow the prompts to modify the password

2 Modify the general user's password

1 if we want to modify the current user's password, such as I want to modify the current user Chenguolin password, then I directly enter passwd can

2 If we want to modify the other user's password, then we directly use sudo passwd user name, this is not demo

3 Third We can use

sudo passwd-d username-This command is used to delete the user's password

4 we can use

CHAGE-L User name--to view the password-related information for this user

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