Root is the superuser account on Linux with unrestricted access to every file, process, and configuration. Understanding root access helps you use it safely.
What Root Access Means
The root user can install software, modify system files, start and stop services, and delete anything. Commands run as root take immediate effect β there is no recycle bin or undo for most operations.
Using sudo Instead of Root
Best practice is to create a regular user, add them to the sudo group, and use sudo command for administrative tasks instead of staying logged in as root. This reduces the risk of accidental destructive commands.
# Create a sudo user\nadduser deploy\nusermod -aG sudo deployDisabling Root SSH Login
After creating a sudo user, disable root SSH login for better security. Edit /etc/ssh/sshd_config:
PermitRootLogin noRestart SSH: systemctl restart sshd. Ensure your sudo user can log in first.