sudoers

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Managed & Fully Managed Linux Servers

 sudo su -

 su -

# cp /etc/sudoers /root/sudoers.bak

# chmod 600 /etc/sudoers

#  vi /etc/sudoers

               90 ## Allow root to run any commands anywhere

                 91 root    ALL=(ALL)       ALL

                 92 kamal  ALL=(ALL)       ALL          ->[Add user-kamal]

:wq

Run sudo without password on CentOS Linux

• 1. Backup /etc/sudoers file, run:

  2. sudo cp /etc/sudoers /root/sudoers.bak

  3. Edit the /etc/sudoers file on CentOS:

  4. sudo visudo

  5. Run /usr/sbin/rebootcommand without password on CentOS:

  6. kamal ALL = NOPASSWD: /usr/bin/reboot

  7. Save and exit the file.

How to execute ALL sudo commands without password on CentOS

Type the following command as root user:

# visudo

Or

$ sudo visudo

Append the following entry to run ALL command without a password for a user named marlena:

kamal ALL=(ALL) NOPASSWD:ALL

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