Get out of sudo su10/31/2023 It can access any file and run any command on your Linux system. This is the super admin account that can do anything and everything with the system. In Linux, there is always a super user called root. What is root user? Why is it locked in Ubuntu? You’ll learn the following in this article: Please keep in mind that while I am writing this from Ubuntu user’s perspective, it should be valid for most Linux distributions. In this beginner series, I’ll explain a few important things about the root user in Ubuntu. ![]() One of those ‘different things’ is the concept of the root user. When you have just started using Linux, you’ll find many things that are different from Windows. But there’s more to root account in Ubuntu that you should know. In both cases, you’ll have to enter your own user account’s password. Or you switch user in Ubuntu to root user like this: sudo su Additionally, each time a user should no longer use the root account (for example, an employee leaves), the system administrator will have to change the root password.Either you run commands with root privilege like this: sudo any_command Provide too much power for inexperienced users, who could unintentionally damage the system. It's not good practice to have numerous people knowing and using the root password because when logged in as root, you can do anything to the system. Using su creates security hazards, is potentially dangerous, and requires more administrative maintenance. To do so, press Ctrl-d or type exit at the command prompt. If you supply a user, you will be logged in as that account until you exit it. In either case, you'll be prompted for the password associated with the account for which you're trying to run the command. ![]() The user feature is optional if you don't provide a user, the su command defaults to the root account, which in Unix is the system administrator account. Replace user with the name of the account which you'd like to run the commands as. To switch users before running many commands, enter: su user Replace user with the name of the account which you'd like to run the command as, and command with the command you need to run as another user. To use the su command on a per-command basis, enter: su user -c command ![]() The su command allows you to become another user. The sudo command also makes it easier to practice the principle of least privilege (PoLP), which is a computer security concept that helps control system access and potential system exploits and compromises. Replace command with the command for which you want to use sudo. To use the sudo command, at the command prompt, enter: sudo command It also logs all commands and arguments so there is a record of who used it for what, and when. Using the sudoers file, system administrators can give certain users or groups access to some or all commands without those users having to know the root password. It prompts you for your personal password and confirms your request to execute a command by checking a file, called sudoers, which the system administrator configures. The sudo command allows you to run programs with the security privileges of another user (by default, as the superuser). The Unix commands sudo and su allow access to other commands as a different user.
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