Sudo

Sudo configuration, permissions management, and best practices.

Jun 4, 2026 • 5 min read • new

Fix "sudo: command not found" on Linux

How to fix the 'sudo: command not found' error on Linux by installing the sudo package, adding your user to the right group, and recovering from a broken PATH.

Linux sudo command running a command as root in a terminal

May 22, 2026 • 7 min read • series

Sudo Command in Linux: Run Commands as Root

A complete guide to the Linux sudo command. Learn how to run commands as root, manage sudoers, open a root shell, list privileges, set timeouts, and more.

May 10, 2026 • 7 min read

How to Add a User to Sudoers in Ubuntu

Grant sudo privileges in Ubuntu by adding a user to the sudo group or editing the sudoers file. Step-by-step examples and common errors.

May 2, 2026 • 7 min read • series

su Command in Linux: Switch User

The su command in Linux switches users in the current session and runs commands with another user's privileges. Examples, options, and a sudo vs su comparison.

Switching users with the su command in Linux

Apr 13, 2026 • 5 min read

How To Create a Sudo User on Ubuntu

Create a new user on Ubuntu with a home directory and grant sudo privileges using adduser and usermod, so you can run administrative commands without logging in as root.

Apr 12, 2026 • 4 min read • series

How to Run Sudo Command Without Password

Configure the sudoers file or a drop-in file in /etc/sudoers.d to let a user or group run sudo commands without a password prompt.

Mar 16, 2026 • 5 min read

How to Create a sudo User on Debian

Create a sudo user on Debian 11, 12, and 13 by adding a new account and granting sudo privileges through the sudo group or the sudoers file.

Mar 9, 2026 • 6 min read

How to Add User to Sudoers in Debian

Learn how to add a user to sudoers in Debian by adding them to the sudo group or creating a custom sudoers rule with visudo.

Nov 4, 2019 • 4 min read

How to Add User to Sudoers in CentOS

In CentOS you have two options to grant sudo access to a user. The first one is to add the user to the sudoers file. The second option is to add the user to the wheel group.

Feb 19, 2019 • 2 min read

How To Create a Sudo User on CentOS

The sudo command is designed to allow users to run programs with the security privileges of another user, by default the root user. In this guide we will show you how to create a new user with sudo privileges on CentOS.