How to enable root access in Linux?

There are several methods to enable root access in a Linux system.

1. Switch user to root using the su command: Enter the su command in the terminal, then input the password for the root user to switch to root user.
2. Execute specific commands using the sudo command: enter the sudo command in the terminal, followed by the command you want to execute. The system will prompt for the current user’s password, allowing the command to be executed with root privileges.
3. Set the root user password in the system: If you are a system administrator with root permissions, you can set the password for the root user and log in directly as root.

Caution should be exercised when using root privileges as the root user has all permissions in the system, and any mistakes could potentially lead to system crashes or data loss. It is recommended to only use root privileges when necessary.