System Administration & Configuration

Introduction to firewalld and...

Objective Learn the basic concepts behind firewalld and how to interact with it using the firewall-cmd utility Requirements Root permissions Difficulty EASY Conventions # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command $ - requires given linux commands to be executed as a regular non-privileged user Introduction Since version 7 of Rhel and...
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Programming & Scripting

Introduction to python web scraping...

Objective Learning how to extract information out of an html page using python and the Beautiful Soup library. Requirements Understanding of the basics of python and object oriented programming Difficulty EASY Conventions # - requires given linux command to be executed with root privileges either directly as a root user or by use of sudo command $ - given linux command to be executed as a regular non-privileged...
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Ubuntu

Install Nagios on Ubuntu 18.04...

Objective Install and configure Nagios on Ubuntu 18.04 Bionic Beaver Distributions Ubuntu 18.04 Requirements A working install of Ubuntu 18.04 with root privileges Difficulty Easy Conventions # - requires given linux commands to be executed with root privileges either directly as a root user or by use of sudo command $ - requires given linux commands to be executed as a regular non-privileged user What is Nagios...
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CentOS

How to check CentOS version

Check CentOS Version There are several ways on how to check what version of CentOS is running on your system. The simplest way to check for the CentOS version number is to execute the cat /etc/centos-release command. Identifying the accurate CentOS version may be required to help you or your support team to troubleshoot your CentOS system. The CentOS version consists of three release versions as illustrated below:...
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Debian

Amp Up Your Multimedia Experience On...

Introduction Debian is the universal operating system, but sometimes, it doesn't feel all that universal out of the box. For people looking for a top-notch multimedia experience, Debian might not seem like the best choice because of its free software policies, but it can actually be made into a multimedia powerhouse. Debian Stretch, when combined with one super powered multimedia repository, is an awesome option...
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Kali Linux

How to update Kali Linux

Objective The following article will provide the readers with information on how to update/upgrade Kali Linux system. Operating System and Software Versions Operating System: - Kali Linux - rolling release Requirements Privileged access to your Kali Linux System as root or via sudo command is required. Difficulty EASY Conventions # - requires given linux commands to be executed with root privileges either directly...
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Redhat

How to set up Apache webserver proxy...

Objective Our objective is to setup Apache httpd to work as a proxy in front of the Apache Tomcat application container. Operating System and Software Versions Operating system: Red Hat Enterprise Linux 7.5 Software: Apache httpd, Apache Tomcat Requirements Privileged access to the system Difficulty EASY Conventions # - requires given linux commands to be executed with root privileges either directly as a root user...
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Fedora

How to use Flatpak to manage...

Introduction With the use of modern Gnu/Linux distributions package managers, package dependencies are no more a problem per-se, but usually each distribution ships with a certain version of a program, and we want to install a new version we have to compile it, or rely on third party repositories. The same thing happens if the repositories of our favorite distribution doesn't contain a certain application we need....
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