Summary of how to add Root users in centos 5.5

This article introduces how to add a Root user in CentOS5.5. For more information, see.

V operating system: CentOS 5.5

1. Add a user. First, use the adduser command to add a common user:

The Code is as follows:	Copy code
# Adduser junguoguo // Add a user named junguoguo # Passwd junguoguo // change the password Changing password for user junguoguo. New UNIX password: // enter the New password here Retype new UNIX password: // enter the new password again Passwd: all authentication tokens updated successfully.

2. Grant root permissions
Method 1: Modify the/etc/sudoers file, find the following line, and remove the comment (#).

The Code is as follows:	Copy code
# Allows people in group wheel to run all commands % Wheel ALL = (ALL) ALL Then modify the user and make it belong to the root group (wheel ): # Usermod-g root junguoguo

After the modification is completed, you can log on with the junguoguo account and run the su-command to obtain the root permission for the operation.

Method 2: Modify the/etc/sudoers file, find the following line, and add a line under root, as shown below:

The Code is as follows:	Copy code
# Allow root to run any commands anywhere Root ALL = (ALL) ALL Junguoguo ALL = (ALL) ALL

After the modification is completed, you can log on with the junguoguo account and run the su-command to obtain the root permission for the operation.

I think method 2 is the best method. For details, refer to the following.