Linux Howto’s for System Administrations
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This brief tutorial explains how to force users to use strong passwords using Pluggable Authentication Modules (PAM) in Debian, Ubuntu and other DEB-based systems. Introduction A strong password must have …
As you may already know, when an user enter a command with sudo privileges, the sudo password will be remembered for a brief period of time. By default, the password …
This tutorial explains how to add, delete and grant Sudo privileges to users in Ubuntu Linux operating system. The guide is officially tested on Ubuntu 22.04 and 20.04 LTS editions. …
Using sudo program, we can elevate the ability of a normal user to run administrative tasks, without giving away the root user’s password in Linux operating systems. This guide explains …
This brief guide explains how to reset sudo password in Ubuntu 22.04 and 20.04 LTS desktop and server editions from rescue mode. Introduction When installing Ubuntu, a new user will …
This tutorial explains how to boot into rescue mode or emergency mode in Ubuntu 22.04, 20.04 and 18.04 LTS editions. As you might already know, Runlevels are replaced with Systemd …
Have you forgotten the root password in Fedora? Or do you want to change the root user password in your Fedora system? No problem! This brief guide walks you through …
By default, every command that you execute on your terminal is stored by the shell (command interpreter) in a certain file called a history file or shell command history. In …
For one reason or the other, you may wish to run a command repeatedly for several times in Linux. This guide will discuss some of the common and effective ways …
Picture this scenario. You are managing a Linux server that is accessed by multiple users. All users have sudo rights. You want to test certain Linux commands with different users. …