Manual addition of users in Linux

Create a user manually in linux. Step 1: Add a line of feng: x: 5000: Name: passwd to/etc/group: step 2: Add a line of feng: x: 5000: 5000: TestUser:/ho... create a user manually in linux, such as feng
 
 
Step 1:
 
Add a row to/etc/group
 
Feng: x: 5000:
 
Name: passwd location: GID: User list of the additional group
 
 
Step 2:
 
Add a row in/etc/passwd
 
Feng: x: 5000: 5000: Test User:/home/feng:/bin/bash
 
Name: passwd location: UID: GID: CECOS (note): diecloud (home directory): shell
 
 
Step 3:
 
Add a row to/etc/shadow
 
Feng: $1 $12345678 $ 0ME5N6oDyoEAwUp7b5UDM/: 15355: 0: 99999: 7 :::
 
Name: Encrypted password: Time 1: Time 2: Time 3: Time 4: Time 5: Time 6: reserved segment
 
Encrypted password: separated by $. The first $ is followed by 1, indicating that the encryption algorithm is md5, the second $ is followed by the added sail, and the third $ is followed by the added password.
 
Time 1: Number of days from January 1, January 1, 1970 to the last modification
 
Time 2: minimum password validity period
 
Time 3: maximum password validity period
 
Time 4: How many days before the password expires
 
Time 5: Number of days after the password expires
 
Time 6: users have been disabled for a long time since January 1, January 1, 1970.
 
# Openssl passwd-1-salt 12345678 enter this command and enter the password as prompted to obtain the md5 value, that is, the content after the third $
 
 
Step 4: give the user skeleton
 
# Cp-r/etc/skel/home/feng
 
Copy the skeleton to the user
 
# Chown-R feng: feng/home/feng
 
Change the owner and Group of the skeleton to user
 
# Chmod-R go =/home/feng
 
Change the owner group of the skeleton and other user permissions to no permissions.
 
 
Then the feng user is created successfully.
 
 
 
 
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