This tutorial explains how to add, delete and grant Sudo privileges to users in Linux operating systems. The steps provided below are tested in Ubuntu 20.04 LTS edition. However, the steps are same on other distributions such as Arch Linux, Debian, Fedora, CentOS, RHEL, openSUSE etc. Before getting into the topic, let us see what
As you probably know, GRUB2 is default boot loader for most Linux operating systems. GRUB stands for GRand Unified Bootloader. GRUB boot loader is the first program that runs when the computer starts. It is responsible for loading and transferring control to the operating system Kernel. And then the Kernel takes charge, and initializes the rest
MySQL master-slave replication is a procedure that allows database files to be replicated or copied across one or more nodes in a network. This setup provides redundancy and fault tolerance such that in the event of a failure in the Master node, the databases can still be recovered in the Slave node. This gives users
Introduction Two-factor authentication (2FA) is an authentication method that requires entering more than one piece of information to successfully log in to an account or device. In addition to entering a username and password combination, 2FA requires the user to enter an additional piece of information such as a one-time password (OTP), like a six-digit
So you installed Ubuntu and started using it extensively. Somewhere down the line, you are bound to lose the track of the software that you had installed over the time. That’s perfectly normal. No one expects you to remember all the packages installed on your system. But the question arises, how to know what packages
APT also known as Advanced Packaging Tool is the command-line tool for managing packages in Debian-based distributions like Ubuntu 16.04, Ubuntu 18.04, Debian 8, Debian 9 and much more. APT simplifies the process of installing, removing, upgrading packages and even used to upgrade the entire operating system through the Command Line Interface In this tutorial, we
ext3grep is a simple program for recovering files on an EXT3 filesystem. It is an investigation and recovery tool that is useful in forensics investigations. It helps to show information about files that existed on a partition and also recover accidentally deleted files. In this article, we will demonstrate a useful trick, that will help
The method of configuring IP address on Ubuntu 18.04 LTS is significantly different than the older methods. Unlike the previous versions, the Ubuntu 18.04 uses Netplan , a new command line network configuration utility, to configure IP address. Netplan has been introduced by Ubuntu developers in Ubuntu 17.10. In this new approach, we no longer
Suricata is an IDS / IPS capable of using Emerging Threats and VRT rule sets like Snort and Sagan. This tutorial shows the installation and configuration of the Suricata Intrusion Detection System on an Ubuntu 18.04 (Bionic Beaver) server. In this howto we assume that all commands are executed as root. If not you need
Setup Nginx Server Blocks In Ubuntu 18.04 LTS Make sure you have updated your Ubuntu system to most recent version. $ sudo apt-get update 1. Install Nginx webserver To install Nginx webserver on Ubuntu, run: $ sudo apt-get install nginx Once Nginx installed, test whether it is working or not by browsing the nginx test
