What Is the Root User and Why You Shouldn't Always Use It
The real risk of an accidental mistake, and why sudo is the safer alternative.
root is the user with total control over the system — it can modify, delete, or damage anything, with no restrictions. Precisely because of that, it isn't a good idea to use it for everyday use.
The real risk: with root, a typo in a command (an extra space, a wrong path) can delete critical system files with no prior warning at all — the exact same command, with a normal user, would have been blocked due to lack of permissions, giving you a chance to notice the mistake before it caused damage.
The correct alternative: sudo
Instead of logging in as root permanently, use sudo
before a one-off command that does need elevated permissions — you get
root's power only for THAT specific command, not for the whole
session.
sudo apt update
This philosophy ("use elevated permissions only when and where you need them, not all the time") is one of the reasons modern desktop-oriented distributions don't enable the root account by default — they push you toward sudo from the start.
Tip: if a tutorial asks you to log in directly as
root for a task you could do with sudo, prefer
sudo — the final result is the same, with less risk of a
mistake slipping through unnoticed.
Frequently asked questions
Is it dangerous to use sudo?
It's safer than being permanently logged in as root, since it only elevates permissions for the one-off command where you use it, not for the whole session — it reduces the risk window of an accidental mistake.
Why don't many distributions enable the root account by default?
To encourage using sudo instead, which is safer by limiting elevated permissions to only the specific command that needs them, instead of keeping them active all the time.