How to sudo without password on CentOS Linux

It is generally not recommended to allow users to use sudo without a password, as it can compromise the security of your system. However, if you still want to allow users to use sudo without a password on CentOS Linux, you can follow these steps:

1. Edit the sudo configuration file:

The sudo configuration file is located at /etc/sudoers. To edit the file, you need to use the visudo command, which is a utility that allows you to edit the sudoers file safely.

To edit the sudoers file, run the following command:

sudo visudo

This will open the sudoers file in a text editor.

2. Add a NOPASSWD rule:

To allow users to use sudo without a password, you need to add a NOPASSWD rule to the sudoers file.

For example, to allow the user1 user to use sudo without a password, you can add the following line to the sudoers file:

user1 ALL=(ALL) NOPASSWD: ALL

This will allow the user1 user to use sudo to run any command without a password.

3. Save the sudoers file:

After you have added the NOPASSWD rule to the sudoers file, save the file and exit the text editor. The changes will take effect immediately.