Help command in Linux

The help command is the simplest way to get information regarding a built-in shell command. It helps you fetch information from the shell’s internal documentation. It takes a text string as the command line argument and looks for the provided string in the shell’s documents. This saves you the time spent in going through the …

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How to Edit Files in Linux?

Creating and editing files is the most basic part of using a Linux based system. There are different ways to edit files in Linux. This tutorial we go over the ways that you can use to edit a file in Linux. You can either use a GUI text editor or you can do it using …

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CentOS Firewall Tutorial – How to Install and Setup the CentOS Firewall?

In this tutorial, we will be installing and configuring the CentOS firewall. We will be using a very powerful and popular Firewall management tool called firewalld. Firewalld is built over iptables (which was previously used to filter network traffic) and comes preinstalled in all newer versions of CentOS, RHEL, and Fedora. Fundamentals of Firewalld Firewalld …

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