Linux offers an array of tools for compressing and decompressing files. In this tutorial, we take a look at the Linux gzip command tool. Gzip is a file format as well as a software application which was created by Mark Adler and Jean-Loup Gailly and has been in use since the early Unix Systems. Linux […]
Linux ifconfig Command Examples
Linux ifconfig is a network management tool that helps you to check the IP addresses of Linux systems as well as configure network interfaces. Let’s dive in and see how this popular command is used. Linux ifconfig command without any options The ifconfig command without any arguments displays the status of all the network interfaces […]
Linux wc Command – Count of Words, Lines, Characters in a File
Linux wc command is used to count the number of words, lines, and characters in a file. The ‘wc’ stands for Word Count. Linux wc Command Let’s see how the wc command is defined by the man page. The man page can be accessed by typing in the following command. The following will be displayed […]
How to Install Varnish Cache on CentOS 7
Varnish cache is a free and opensource high-performance HTTP accelerator used to speed up the rate at which web servers serve web pages. The cache saves the webpages in memory such that the web server doesn’t have to serve the webpages afresh every time they are requested by clients. This ultimately gives your server a […]
How to set up Apache Virtual Hosts on Ubuntu 18.04
The Apache HTTP Web server is a powerful, free and open source web server that has been, and remains the leading web server platform ahead of others such as Nginx and Microsoft IIS. According to Opensource.com Apache enjoys a market share of 45.9%, and powers popular sites such as PayPal, Apple, Craigslist, Adobe, and BBC […]
How to Setup HAProxy as Load Balancer for Nginx in CentOS 7
Written in C by Willy Tarreau, HAProxy, also known as High Availability Proxy is a fast and lightweight HTTP load balancer and proxy server. It has a low CPU usage and is occasioned by a small memory footprint. The load balancer is used by popular websites such as StackOverflow, Twitter, Github, and Tumblr to mention […]
How to Install OpenStack on Ubuntu 18.04 with DevStack
Openstack is a free and opensource IaaS cloud platform that handles cloud compute, storage and network resources. It comes with an intuitive dashboard that enables systems administrators to provide and monitor these resources. You can seamlessly install OpenStack locally on your Ubuntu 18.04 instance for learning and testing purposes using Devstack. Devstack is a set […]
Linux xargs command examples
The xargs command in Linux/UNIX reads items from the standard input, delimited by blanks or newlines, and executes the command one or more times with any initial arguments. If no command is provided as an argument to xargs, then the default command that the tool executes is an echo. Blank lines on the standard input […]
How to Install Yarn on Ubuntu 18.04
YARN and NPM (Node Package Manager) are the two popular JavaScript package managers to automate the process of installing, updating and removing NPM packages. In this guide, we will learn how to install YARN on the Ubuntu system. We will also look into some of the commonly used YARN commands. YARN vs NPM NPM has […]
Linux uptime Command Examples
Linux uptime command shows us how long the system has been running. The uptime command gives a one-line description of information containing the current time, how long the system is running, the total number of logged-in users, and the system load. In this article, we will go through the details of the uptime command with […]