UNIX/Linux

UNIX and Linux Commands Tutorials

Linux cat Command Examples

One of the most commonly used commands in Linux is the cat command. Short for concatenate, Linux cat command allows users to perform the following operations. View contents of a file Redirect output of files….

Passwordless SSH Login in 3 Simple Steps

SSH (Secure SHELL) is a secure opensource network protocol that allows users to log in securely to remote Linux systems and other network devices. In addition, the protocol is used for the transfer of files….

Linux gzip Command Examples

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….

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 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….

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….

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….

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….

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….

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….

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