How to Verify SHA256 Checksum of File in Linux

 There has been constant research and development to improve the security of applications and files on the Internet and thus to prevent malicious use.

The Linux fmt Command – Formatting Text on the Linux Command Line

How to use the fmt command and it’s options to format large text files for reading on the command line.

BSD Release: OPNsense 21.1

OPNsense is a HardenedBSD-based specialist operating system (and a fork of pfSense) designed for firewalls and routers. The project’s latest version is OPNsense 21.1. This new release introduces a number of improvements to firewall configuration and m…

Decade-Old Sudo Flaw Discovered

A vulnerability has been discovered in the Linux sudo command that’s been hiding in plain sight.

10 of the Best Linux Debuggers for Software Engineers

There is a wide range of powerful Linux debuggers which will make it very easy to locate weak points or bugs in your applications. Check them out here

The KISS Web Development Framework

by Blake McBride

Perhaps the most popular platform for applications is the web. There are many reasons for this including portability across platforms, no need to update the program, d…

How to Install and Use Elasticsearch on Ubuntu 20.04

Elasticsearch is an open-source distributed analytics engine built on Apache Lucene. It takes unstructured data from different locations and stores it according to user-specified mapping and indexes it.

How to Install Helm Kubernetes Package Manager on Ubuntu 20.04

Helm is a package manager for Kubernetes. In this article, we will see the steps to install Helm3, in terms of architecture there is a difference between Helm2 and Helm3. One of the major differences is "Removal of Tiller".

Distribution Release: Clonezilla Live 2.7.1-22

Clonezilla Live is a Debian-based live CD containing Clonezilla, a partition and disk cloning software. The project’s latest release, Clonezilla Live 2.7.1-22, updates the kernel for better hardware support, includes new package updates from Debian’s …

Recovering a missing kernel in Centos 6

Introduction Recently when I restarted a centos 6.8 system, I was greeted with the message “Error 15:  File not found”. In this article, I will systematically describe the steps I used to recover my system. I was using a VMware virtual machine. Step 1: Identify the error My system did not boot beyond the grub […]

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Using rubygems for managing ruby packages in Linux

Introduction Ruby has become a popular and powerful programming language over the years since its inception in 1995. The Ruby programming language is the foundation for the popular web development framework Ruby on Rails. Increased popularity implied increased user base and increased functionality. So, ruby packages or gems were introduced to add additional features to […]

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How to Install CouchDB on Debian 10

CouchDB is a high-performance opensource NoSQL solution where data is stored in JSON-based document format as key/value pairs, lists, or maps. It provides a RESTFUL API that enables users to easily manage database documents
The post How to Install Couc…

How to Install Webmin on Fedora Linux

Webmin is a free and open-source front-end monitoring and administration tool that helps Linux users have a glance at various system metrics and perform administration tasks.

Sudo Vulnerability Allows Attackers to Gain Root Privileges on Linux Systems

A vulnerability (CVE-2021-3156) in sudo could allow any unprivileged local user to gain root privileges on a vulnerable host (without authentication).

Sudo vulnerability allows attackers to gain root privileges on Linux systems

A vulnerability (CVE-2021-3156) in sudo could allow any unprivileged local user to gain root privileges on a vulnerable host (without authentication).

Getting started with SystemTap on Oracle Linux

This blog describes the installation procedure for SystemTap on UEK systems and provides an introduction on how to use SystemTap’s scripts for tracing events or debugging problems in the Linux kernel on a live system.

Looks Like Fedora 34 Workstation Will Ship with the GNOME 40 Desktop by Default

The Fedora development team decided not to break protocol and continue following the latest upstream GNOME releases for its next major release, Fedora 34.

dnf package manager examples

Introduction DNF is considered to become the replacement for yum as the next default package manager for yum. The dnf package manager was introduced with Fedora 18 and had been designated as the default package manager as of Fedora 22. DNF has the following advantages over its predecessor yum: Provides faster dependency resolution for packages […]

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Merging git branches on the command line and GitHub

Introduction In our previous articles on git branches we explained what are branches in git terminology. Branches provide a means to have a working copy of our code available in the master branch while we continue to make changes to it in a different branch. We also practically demonstrated how to create branches and work […]

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How to Install Webmin on Fedora Linux

Keeping an eye on your system’s performance is one of the essential tasks that any Linux user should undertake from time to time. This helps in diagnosing any bottlenecks that are likely to impact
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