| sudo adduser username | This command is used to add a user. | Syntax: $ sudo adduser username
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| sudo passwd -l ‘username’ | This command is used to change the password of a user. |
Example: Command to change the password for user1 is shown
Syntax: $ sudo passwd -l 'user1'
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| sudo userdel -r ‘username’ | This command is used to remove a newly created user. |
Example: Command to delete the newly created user1
Syntax: $ sudo userdel -r 'user1'
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| sudo usermod -a -G GROUPNAME USERNAME | This command is used to add a user to a particular group. |
Example: The command to add user2 to group1 is shown.
Syntax: $ sudo usermod -a -G group1 user2
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Sudo deluser USER GROUPNAME | This command is used to remove a user from a group. |
Example: The command to delete user1 from group1 is shown.
Syntax: $ sudo deluser user1 group1
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| finger | This command shows the information of all the users logged in. | Syntax: $ finger
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| finger username | This command gives information about a particular user. |
Example: The command to get information about the user1 is shown on the right.
Syntax: $ finger user1
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