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Difference between Su and Sudo

Difference between Su and Sudo

In computing, sudo (SunOS Unix) and su (Linux) are commands that allow a user to run programs with the privileges of another user or group. While both commands provide similar functionality, there are some key differences between them. In this article, we will take a look at the differences between sudo and su, and discuss when each one is appropriate.

What is Su?

Su is a computer program used in Unix-like operating systems that allows users to run commands with the security privileges of another user, by default the superuser. It stands for “switch user” or “superuser does”. Su allows a user with appropriate permissions to execute commands with the security privileges of any other user. It is useful for situations where it is desirable to provide a limited amount of access to restricted files and commands.

Su is typically used when it is necessary to perform an action as the superuser, such as changing the ownership of a file or making configuration changes to the system. Su can also be used to execute commands like any other user, including those that are not logged in. Su is typically invoked from the command line and requires that the password for the target user be known. Su is a powerful tool and should be used with care. improper use of Su can result in damage to the system or data loss.

What is Sudo?

Sudo is a command used in Unix-like operating systems that allows users to run programs with the security privileges of another user, typically the superuser. Sudo is short for “superuser do”. The Sudo command provides a mechanism for granting administrator privileges to normal users, allowing them to perform tasks that would otherwise require root access. Sudo is usually configured to allow only specific users or groups of users to use it. When sudo is configured this way, it is referred to as sudoers.

Sudo can also be used to grant temporary privileges to users. For example, a user may need to use the Sudo command to gain root access in order to install a new software program. However, after the program is installed, the user may no longer need root access and can be removed from the sudoers file. Sudo is a powerful tool that should be used with care. Improper usage can lead to security vulnerabilities. For this reason, it is important to understand how Sudo works before using it on a system.

Difference between Su and Sudo

  • Su and Sudo are commands used in Unix-like operating systems that allow a user to run programs with the security privileges of another user. Su allows a user to become the superuser or root, while sudo allows a user to execute commands with the privileges of another user.
  • Both su and sudo require the user to enter a password, but sudo also requires that the user be authorized by the system administrator. In general, sudo is preferred over su as it is more secure. With su, a hacker who gains access to a user’s account can easily become the superuser and wreak havoc on the system.
  • With sudo, however, a hacker would need to know not only the password of the user account they have compromised but also the password of the sudoers file, which is typically only accessible to the system administrator. As a result, sudo provides an extra layer of security that can help to protect your system against malicious attacks.

Conclusion

We hope this article has helped clear up any confusion between Su and Sudo.

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