today's howtos

posted by Roy Schestowitz on Oct 21, 2022

• Powering the Raspberry PI Pico from External Batteries

  Power your Raspberry PI Pico with batteries: tutorial to understand how to use a battery pack...

• How to Use Libre Office on a Chromebook

  Chromebooks are more powerful than you think. It’s no longer just a web browser anymore. It is also possible to run Linux programs, even Libre Office. This guide will show you how to use Libre Office on your Chromebook.

• How to Install Metasploit Framework on Ubuntu Linux - Make Tech Easier

  Penetration testing is a type of security testing used to test an organization’s defenses. Your goal as a pentester is to find and exploit vulnerabilities in the system to gain access to sensitive data or systems. One of the most popular tools for conducting penetration tests is Metasploit. In this tutorial we show you how to install Metasploit Framework on a Ubuntu Linux machine.

• How to find GNOME Shell version from the Terminal

  Here’s a quick guide on finding the GNOME desktop (or Shell) version via the command line and GUI.

• Video: How To Generate ed25519 key

  Here's a quick guide on how you can find GNOME Shell version in Ubuntu and other Linux distributions (GUI and CLI method).

• Evaggelos Balaskas - System Engineer: Automatically delete files in object storage

  In the last few months of this year, a business question exists in all our minds:

  -Can we reduce Cost ? -Are there any legacy cloud resources that we can remove ?

  The answer is YES, it is always Yes. It is part of your Technical Debt (remember that?).

  In our case we had to check a few cloud resources, but the most impressive were our Object Storage Service that in the past we were using Buckets and Objects as backup volumes … for databases … database clusters!!

  So let’s find out what is our Techinical Debt in our OBS … ~ 1.8PB . One petabyte holds 1000 terabytes (TB), One terabyte holds 1000 gigabytes (GB).

  We have confirmed with our colleagues and scheduled the decomissions of these legacy buckets/objects. We’ve noticed that a few of them are in TB sizes with million of objects and in some cases with not a hierarchy structure (paths) so there is an issue with command line tools or web UI tools.

• How to tell ssh client to ignore ssh config file

  have a tutorial that explains the basics of the SSH client configuration file and some of the most common configuration options for Linux and Unix developers or sysadmin. In this quick tip, I will explain how and why you sometimes need to ignore or exclude the ssh client config file under Linux, Unix, *BSD and macOS.

• How To Enable BBR on Ubuntu 22.04 LTS - idroot

  In this tutorial, we will show you how to enable BBR on Ubuntu 22.04 LTS. For those of you who didn’t know, BBR a.k.a Bottleneck Bandwidth and Round-trip propagation time is a new congestion control algorithm developed at Google. Its helps to improve the connection speed. The main goal of BBR is to initiate network utilization and reduce queuing. However, this feature should only be enabled on servers and not at the network or client level.

  This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step enabling TCP BBR on Ubuntu 22.04 (Jammy Jellyfish). You can follow the same instructions for Ubuntu 22.04 and any other Debian-based distribution like Linux Mint, Elementary OS, Pop!_OS, and more as well.

• How to Install Mastodon Social Network on Ubuntu 22.04

  Mastodon is free and open-source software for running self-hosted social networking services.

• Linux: Manage Multiple Versions of Node.js with the NVM Manager - The New Stack

  Node.js is a crucial development tool for cloud native development. Because Node.js is very resource-efficient and high performing, it’s perfectly suited for apps and services that need to function at a larger scale. With Node.js, you can develop SaaS applications, such as those used by Netflix, Uber, and Linkedin.

  You probably already know what Node.js is. For those of you who do not, it’s an open source server software that runs on almost every platform. An asynchronous, event-driven JavaScript runtime, Node.js is ideal for building scalable network apps and services. Node.js can be used to create very basic applications (such as the always fun “Hello, World” app) to very complex applications.