Add users to sudoers under CentOS

After installing the system, CentOS cannot use the sudo command by default. in this case, we need to add the login user to the/etc/sudoers file and assume that the user name is tom and switch to the Super User: $ su-open the/etc/sudoers File: $ vi/etc/sudoers

After installing the system, CentOS cannot use the sudo command by default. in this case, we need to add the login user to the/etc/sudoers file.

 

 

Assume that the user name is tom.

 

Switch to Super User: $ su-

 

Open the/etc/sudoers File: $ vi/etc/sudoers

 

 

Modify file content:

Find the root ALL = (ALL) ALL row,

Insert a new row below with the following content:

Tom ALL = (ALL) ALL

Then, type the command "x!" in vi !" Force save and exit.

 

Note: This file is read-only and does not contain "!". Saving fails.

 

Exit Super User: $ exit

 

You can use sudo as much as you like.