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today's howtos

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  • Linux IP Command with Usage Examples

    The IP command is part of iproute package that is by default installed in Modern Linux distributions. In Linux, the IP command is used to manage and display Network Interfaces, IP Addresses, IP Routing Table, and IP Neighbor Entries. It is commonly used to assign an IP address to a network interface and configure network interface settings.

    In this tutorial, we will learn Linux IP command with usage examples.

  • Jenkins: An introduction to jobs and projects - Anto ./ Online

    This guide will explain what a Jenkins job (or project) is and discuss the different types you may encounter. There are many types available, and it depends on the plugins that you have installed. First, however, this guide will discuss the main types that you will encounter.

  • How to create an RDS cluster on AWS

    AWS RDS (Relational Database Service) is a managed database service provided by AWS to launch highly available, fault-tolerant, automatic failover, and scalable database servers as AWS RDS is a managed service, so it does not provide the shell access to the server. You only get the connection endpoint to connect to the database. AWS RDS provides the following benefits over a self-managed database server.

  • How to Deal with Spaces in File Path Linux

    Using Linux operating system and facing problems while dealing with the spaces in file path? Many Linux users encounter this issue. In the Linux operating system, we can run commands by passing multiple arguments. A space separates each argument. So, if we give the path that has a space, it will be considered two different arguments instead of one a single path.

    In this article, we will dive deeper into how to deal with spaces in file path Linux? But, before that, we need to know the ls command, the uses of the ls command, the syntax for writing the command on the terminal.

  • How can I see all services in Ubuntu?

    System services are the processes or system programs known as ‘daemons’ that continuously run in the background. These services wait for client requests and are responsible for how the system works and how it communicates with other programs. When working in a Linux environment, including Ubuntu, you can easily manage all system services (start, stop, restart, enable at system boot, etc.) through a service manager. Most of the modern Linux distributions, such as Ubuntu, now use a process manager known as ‘systemd’. The systemd is a service manager in the Ubuntu system and used to replace the ‘init’ process. The systemd services manager is controlled by the primary command-line tool ‘systemctl’ command.

    We will show you the various techniques in this tutorial related to listing or viewing all services in the Ubuntu 20.04 system.

  • How do I Copy Multiple Files Using CP in Linux

    CP allows you to copy directories and command files using the command line. With this command, you can transfer multiple files or folders, preserve attribute information and create their backups. CP copies file independently from their originals. So, we can say that the CP command is useful for Linux. People still don’t know how to use this command and search for answers regarding copying multiple files using CP in Linux. That’s why we have written this article to briefly describe how to copy multiple files using CP in Linux.

  • Find Processes Using Most CPU Linux

    Many times such situations come in Linux where we have to deal with application unresponsiveness or sluggish applications due to CPU usage. This happens when our Linux system CPU is very busy. Most of the time, it has to wait until the CPU is free and queue up to process its pending requests.

    Whenever the CPU is completely occupied by the processes of the Linux system, it becomes difficult for the CPU to process other requests. All remaining requests have to be stopped until the CPU is freed. This becomes a huge obstacle.

    We have to use the appropriate command to know the processes which are affecting the CPU. In this article, we will tell how we can solve CPU-related problems with the help of the following commands, as well as see how to find those processes which are using most CPU Linux.

  • Detect SQL Injection (SQLi) and XSS - blackMORE Ops

    LibInjection is a C library to Detect SQL Injection (SQLi) and Cross-Site Scripting (XSS) through lexical analysis of real-world Attacks.

    SQLi and other injection attacks remain the top OWASP and CERT vulnerability. Current detection attempts frequently involve a myriad of regular expressions which are not only brittle and error-prone but also proven by Hanson and Patterson at Black Hat 2005 to never be a complete solution. LibInjection is a new open-source C library that detects SQLi using lexical analysis. With little upfront knowledge of what SQLi is, the algorithm has been trained on tens of thousands of real SQLi attacks and hundreds of millions of user inputs taken from a Top 50 website for high precision and accuracy.

  • Diagnose connectivity issues with the Linux ping command | Opensource.com

    Networked computers are so common these days that most of us take it for granted that a computer on one side of a room can contact one on the other side of the room, much less the other side of the world. When it works as designed, networking is what makes the Internet, the cloud, file shares, media streaming, remote administration, printing, and much more possible. When something goes wrong, it can sometimes be challenging to diagnose. One of the most fundamental diagnostic tools for networked connectivity is the ping command.

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today's howtos

  • How to Add Host in Zabbix Server to Monitor

    Zabbix is an open-source monitoring software tool for diverse IT components, including networks, servers, virtual machines and cloud services. Zabbix server is rich in template tools which contain lots of predefined templates which we can easily be used with your hosts.

  • How to install Flightgear on Elementary OS 6.0 - Invidious

    In this video, we are looking at how to install Flightgear on Elementary OS 6.0.

  • How to install and configure Squid Proxy on Rocky Linux/Alma Linux 8

    In this guide we will learn how to install and configure Squid Proxy server on a Rocky Linux 8 server. This guide also works on other RHEL 8 based distros like Alma Linux and Oracle Linux. Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. It reduces bandwidth and improves response times by caching and reusing frequently-requested web pages. Squid has extensive access controls and makes a great server accelerator. It runs on most available operating systems.

  • How to install Flashforge FlashPrint 5.2.1 on a Chromebook

    Today we are looking at how to install Flashforge FlashPrint 5.2.1 on a Chromebook. Please follow the video/audio guide as a tutorial where we explain the process step by step and use the commands below. This tutorial will only work on Chromebooks with an Intel or AMD CPU (with Linux Apps Support) and not those with an ARM64 architecture CPU.

  • Install PHP 8.1 on Linux Mint 20 - LinuxCapable

    PHP 8.1 is a significant update of the PHP language that was “officially” released on November 25, 2021. As we advance from the existing PHP 8.0 release, this is a standard upgrade. The new PHP 8.1 brings enums, fibers, never return type, final class constants, intersection types, read-only properties amongst the long list of new features and changes. Linux Mint is known to be a desktop distribution and not as a full-fledged web server. However, developers may require to install PHP on their Mint system for development purposes. In the following tutorial, you will learn how to import the Ondřej Surý PPA and install PHP 8.1 on your Linux Mint 20.

  • How to install and use Firewalld on Rocky Linux 8 - Linux Shout

    Firewalls are one of the most essential parts of security when we are going online. Here we learn the steps and command to install, configure, and how to use FirewallD on Rocky Linux 8 using CLI or GUI. Many of us who are not already Linux would already be familiar with the firewall feature on Windows, where it is very easy to turn On or Off ports or services using GUI. However, what about Linux such as CentOS, Rocky Linux, RedHat, AlmaLinux, and more… If you are using full Linux Desktop then a firewall would already be there but in most of the cases without a graphical interface. Nevertheless, Debian, RedHat, Ubuntu, and other Linux systems provide the appropriate firewall GUI software directly from their respective repository to manage things with the help of mouse clicks. But what if you just want a basic OS installation with no graphical interface? Because minimal versions of Linux would not even have the CLI version of Firewall by default. Well, this is a very small problem, if you have an active internet connection and due to an in-built package manager under Linux, we can install a firewall with just a single command.

  • Overview of the Wireshark User Interface (GUI)

    Wireshark is a Free and Open Source Software (FOSS) and it is developed by a community of enthusiastic developers. Wireshark (formerly Ethereal) is used for capturing and investigating the traffic going on a network. It is a very popular network protocol analyzer among network professionals, security analysts, and research scholars around the world. The good thing is that it is open source and freely available under the GNU General Public License version 2. It is available for major OSes like Windows, macOS, Linux, and UNIX. Wireshark has many features like profound inspection of network traffic, real-time capture, offline analysis, R/W support for different capture file types etc. It also organizes SharkFest, an annual educational conference, around the world for imparting knowledge of their product. These conferences are focused on the best practices of using Wireshark.

  • How to install DragonFly BSD 6.2.1 plus MATE desktop and some applications. - Invidious

    In this video, I am going to show how to Install DragonFly BSD 6.2.1 plus MATE and some applications.

  • Using the Linux look command to select lines from files | Network World

    The look command on Linux can be handy for selecting particular lines from text files with sorted contents. Let's look into how it can be used and where you might run into some problems.

  • How to Change Domain Name on WordPress

    This tutorial explains how to change the domain name on WordPress. By reading this article you will learn how to edit your WordPress site URL both from the WordPress dashboard and from your server through phpMyAdmin. In case you do not have access to your dashboard through your new URL, you can achieve it from your server. This method includes the use of a plugin to update all the URLs in your site content. All steps explained in this article include screenshots making it easy to follow them.

  • Expanding Your Nextcloud Instance Using Linode's NVMe-Backed Block Storage

    Nextcloud is a very popular self-hosted alternative to Dropbox, Google Drive, and other cloud hosting providers. It's not only the go-to choice for individuals, either. Nextcloud has a number of enterprise-level deployments. Given the above, we decided to install Nextcloud on a Linode Dedicated CPU and see just what it would take to configure it to use Linode's new NVMe-backed block storage. This article was the result.

  • Analyze Network Traffic Using Brim Security - kifarunix.com

    In this tutorial, you will learn how you can analyze network traffic using Brim security tool. Brim is an open source desktop application that can be used to analyze structured network traffic data like;

GNOME 42 Desktop Environment Is Now Available for Public Testing

GNOME 42 alpha is now ready for public testing to give the Linux and Open Source community an early taste of what they can expect from the next major release of one of the most popular desktop environments for Linux-powered operating systems, used on desktop and mobile. The biggest changes in the GNOME 42 release around the GTK 4 and libadwaita components. Some of the default apps distributed as part of the GNOME stack have been ported to GTK 4 for a more modern look and extra functionality. Here’s a first look at some of them. Read more

Old Firewall Reborn As Retro PC | Hackaday

In two follow-up videos (here and here), he builds an enclosure (instructions on Thingiverse) and tries out several other operating systems. He was able to get the Tiny Core Linux distribution running with the NetSurf browser, but failed to get Windows 2000 or XP to work. Returning to Windows 98, he tweaks drivers and settings and eventually has a respectable retro-gaming computer for his efforts. The next time you’re cleaning out your junk bins, have a peek inside those pizza-box gadgets first — you may find a similar gem. Read more

Building a Retro Linux Gaming Computer - Part 9: Ancient Archaeology

After the demise of Loki Software, one of their former employees found himself forced to work behind a cash register for a living. Desperate to get back to porting games, he found the email address of an artist working for the Croatian developer Croteam, creators of the game Serious Sam. Croteam agreed to let him attempt to create a port of the game to Linux, the first of many games to come to the platform thanks to the work of Ryan “icculus” Gordon. The port of Serious Sam though would in the end never leave the beta stage. Croteam later released the source code to the game in 2016, with Ryan himself returning to craft his own source port, but his original effort languished for years with a number of unfortunate bugs. One of these left the game unbeatable as it prevented the player from inflicting any damage to the final boss. Unbeatable that is with the standard version of the game. Our friends at Global Star Software released Serious Sam: Limited Edition in 2002, a bizarre budget retail variant of Serious Sam: The First Encounter that only features seven out of the fifteen levels. It also happens to be the only version of the game that I possess on CD-ROM. I initially dismissed the idea of playing Serious Sam as I thought it would be too much for the hardware, but the jewel case insists that the Rage 128 Pro is compatible. Read more