Linux is an Open source operating system comes in many flavors like RedHat, Ubuntu, CentOS , OpenSUSE etc. It is currently supported in almost all the infrastructure and is most widely used OS around the World. I will cover all the important Linux Topics under this category.
In this tutorial, I will take you through the steps to setup and configure UFW Firewall on Ubuntu 18.04. You might be thinking what is ufw is all about and why do we use it. Well, ufw is basically acts as an interface to iptables and designed to simplify the process of configuring a firewall. … Read more
In this article, I will take you through top 10 passwd and chage Command Examples to Manage User Password Expiration and Aging in Linux. passwd tool is generally used to change user account password and chage command are usually used for User account expiration and aging operations. Most of the time you will see both … Read more
In this article, I will take you through the steps to install parallel ssh(pssh) on RedHat/CentOS 7. According to PSSH Man Page, pssh is a program for executing ssh in parallel on a number of hosts. It provides features such as sending input to all of the processes, passing a password to ssh, saving output … Read more
In this article, I will take you through the usage of mv command in Linux. mv command is one of the linux terminal commands used on daily basis by Linux and System Admin across the world to perform day to day files and directories operations. So it is very important to understand the options and … Read more
In this article, I will take you through 6 Simple Steps to setup passwordless ssh login using ssh keygen. SSH is a network protocol that allows one computer to connect to another computer over an unsecure network like Internet.Without encryption,data transfer over the Internet in a plain text form makes it easier for somebody to … Read more
In this article, I will take you through the usage of ls command in Linux. ls command in Linux is a daily use command to list out the files and directories. From Linux Administrator to Linux Developer, everyone uses it to perform very basic listing operations. Hence it is important to understand the usage of … Read more
In this article, I will take you through the steps to install Nginx on Ubuntu 18.04. Nginx, pronounced eNgineEx, a web server developed by Igor Sysoev in 2002. It was officially released in 2004. According to the Official Nginx Website, it is defined as an HTTP and reverse proxy server, a mail proxy server, and … Read more
In this article, I will take you through top 10 Nginx commands which is important for every Linux Admin using Nginx Server. As per Nginx Wiki, NGINX is a free, open-source, high-performance HTTP server and reverse proxy, as well as an IMAP/POP3 proxy server. NGINX is known for its high performance, stability, rich feature set, … Read more
In this tutorial, I will take you through Step by Step procedure to add user to sudoers on Ubuntu 18.04. In many cases you might have seen that a non-privileged user has been given sudo access to perform root actions. This is required in many Organization where some tasks cannot be performed without having root … Read more
In this tutorial, I will take you through the different tools that can be used to check/test port connectivity in Linux. Test Port Connectivity You might be aware of curl, netstat, telnet and nc command in Linux: – curl – It is usually used for downloading web pages or files from a Linux/Unix command line. … Read more