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Jan 30, 2026 · Learn how to use the su command in Linux to switch users and run commands with another user's privileges. Includes examples, options, and sudo vs su comparison.

Dec 10, 2025 · The su Linux command switches users and elevates privileges in a session. This guide shows how it works and when to use it.

su is mostly designed for unprivileged users, the recommended solution for privileged users (e.g., scripts executed by root) is to use non-set-user-ID command runuser(1) that does not require authentication …

Jun 1, 2025 · This page covers the GNU / Linux version of su. The su command, which is short for substitute user or switch user, enables the current user to act as another user during the current …

The Unix command su, which stands for "substitute user" [1][2] (or historically "superuser" [3][4]), is used by a computer user to execute commands with the privileges of another user account.

Jul 23, 2025 · As a new Linux user, you may always face confusion regarding the difference between `su` command and `su -` command. In Linux, the `su` command is used to switch to another user …

Jun 14, 2024 · The su command stands for substitute user or switch user and allows switching from the current user to another. By default, su switches to the root user if no username is specified. …

Oct 8, 2024 · In this how-to guide, we will explore how to effectively use the su command in Linux with practical examples.

Feb 12, 2025 · The su command in Linux (short for Substitute User) allows you to switch from the current user to another user on a Linux system. By default, it switches to the root user, providing …