Linux User and Group management

This is the user and group management knowledge Point, do not want to see the text on the video bar, or video-based, text for the memo

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Project 1 User Management 1. Create a new user User01, set its home directory to/home/user01:

#useradd –d/home/user01-m User01

2. Look at the last line of the/etc/passwd file to see how it is logged.

　　

cat/etc/passwd

3. Look at the last line of the file/etc/shadow file to see how it was recorded.

Cat/etc/shadow

4. Set password for user user01: #passwd user01

　　

5. Review the last line of the file/etc/shadow file again to see what's changed.

6. Use the User01 user login system to see if you can log in successfully.

7. Lock User user01: #passwd-L User01.

　　

8. Look at the last line of the file/etc/shadow file to see what's changed.

9. Use the User01 user login system again to see if you can log in successfully.

10. Unlock user user01: #passwd-u User01

11. Change the user User01 account name to User02: #usermod –l user02 User01.

12. Look at the last line of the/etc/passwd file to see what's changed.

13. Delete User User02.

Sub-project2. Management of the group 1. Create a new group, stuff: #groupadd stuff.

2. Look at the last line of the/etc/group file to see how it is set up.

3. Create a new account User02 and set his start and subordinate groups to stuff: #useradd –g stuff–g stuff User02.

4. Look at the last line in the/etc/group file to see what's changed.

5. Set the group password to group stuff: #gpasswd stuff.

6. Delete User User02 in group stuff: #gpasswd –d user02 stuff.

7. Review the last line in the/etc/group file again to see what's changed.

8. Delete the group stuff.

Linux User and Group management