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today's howtos

Submitted by Roy Schestowitz on Monday 18th of January 2021 03:37:49 PM Filed under
HowTos
  • Install Inkscape 1.0.2 In Ubuntu / LinuxMint / Debian | Tips On UNIX

    Inkscape is a free and open-source professional vector graphics editor software that runs on Linux, Mac OS X, and Windows desktop computers.

    It is suitable for illustrators and web designers and it is an alternative to Adobe Illustrator. It supports many SVG features (markers, alpha blending, clones, etc..) and easy to use.

  • How to enable PowerTools on CentOS 8

    The PowerTools repository, which is available on CentOS/RHEL 8, provides developer related tools and libraries. Some EPEL packages depend on packages available from PowerTools. Thus if you have set up the EPEL repository on your CentOS, it is recommended that you enable PowerTools as well.

  • Install gscan2pdf 2.11.0 in Ubuntu / Linux Mmint

    gscan2pdf a GUI tool used to produce PDF’s or DjVus from Scanned documents,gscan2pdf works on all Linux / BSD machines

    gscan2pdf team released a newer version 2.11.0 recently and yet to be updated in official Jeffrey Ratcliffe PPA for Ubuntu 20.04 and lower versions.

    This tutorial will be helpful for beginners to install gscan2pdf 2.11.0 in Ubuntu 20.10, Ubuntu 20.04, Linux Mint 20.1, and lower versions of Ubuntu and Linux Mint.

  • How to set up WireGuard VPN server on Ubuntu 20.04

    Traditionally, VPN implementation has existed in two forms. In-kernel VPN implementation such as IPsec performs heavy-duty per-packet crypto processing in the kernel in a "bump-in-the-stack" fashion (i.e., between IP stack and the network drivers). This gives speed as there is no context switch between kernel and userspace during packet processing. But it comes with high management complexity in separate userspace control plane (e.g., IKE). An alternative form of VPN implementation is userspace TUN/TAP-based solutions such as OpenVPN, Tinc, n2n, where crypto processing is performed by a userspace VPN daemon. Naturally, these TUN/TAP-based VPN solutions have poor performance compared to IPsec mainly because network packets traverse the kernel and userspace boundary multiple times, resulting in frequent context switches and packet copies. Despite their performance disadvantage, userspace VPN solutions enjoy more popularty than the in-kernel counterpart due to their ease of use and configuration.

  • How to create a lifecycle policy for an S3 Bucket on AWS

    We can use the Lifecycle Policy to manage the objects in S3 Bucket so that they are stored cost-effectively throughout. An S3 Lifecycle Policy is a set of rules used to define actions that Amazon S3 applies to objects in the bucket.

  • How to change the hostname on Ubuntu 20.04 LTS

    In a Local Area Network (LAN) environment, computer systems need to communicate with each other based on their IP addresses. To learn and remember these IP addresses and sharing them when needed is a tricky business. In order to avoid such trouble, users tend to rename their system’s hostname for their own ease. The simpler hostnames will allow all computer users to coordinate easily without an exchange of large IP addresses. This whole scenario is quite related to the URLs and DNS server address, where the user is totally unaware of long addresses and simply use the URLs in their search engine.

    In this tutorial, I will show you two methods to change the hostname of an Ubuntu 20.04 system via the command line terminal and GUI. Users can opt either way to update the names and share them once they have finalized them.

  • How To Delete Outdated Vagrant Boxes In Linux - OSTechNix

    You might have downloaded several versions of Vagrant boxes and some of them might be pretty outdated! If they are no longer required, you can safely delete outdated Vagrant boxes in Linux as described in this brief guide.

    Check for outdated Vagrant boxes

    I have been using Vagrant for the past few months for testing purposes. Since Vagrant version 1.5, boxes support versioning. The Box Versioning allows the developers who make boxes to push updates or fixes and the users to easily update the underlying box.

  • LHB Digest #21.02: Uptime Monitoring, Terminal Shortcuts, Linux Commands Tips and More
  • How To Install Java on Linux Mint 20 - idroot

    In this tutorial, we will show you how to install Java on Linux Mint 20. For those of you who didn’t know, Java is a very popular language when it comes to programming. It is a common language for android development and other enterprise solutions. It was first released by Sun Microsystems in 1995. Many programs and scripts require Java to run it, but usually, Java is not installed by default on a VPS or Dedicated Server.

  • building a simple KVM switch for 30€ | die-welt.net

    Prompted by tweets from Lesley and Dave, I thought about KVM switches again and came up with a rather cheap solution to my individual situation (YMMY, as usual).

    As I've written last year, my desk has one monitor, keyboard and mouse and two computers. Since writing that post I got a new (bigger) monitor, but also an USB switch again (a DIGITUS USB 3.0 Sharing Switch) - this time one that doesn't freak out my dock \o/

    However, having to switch the used computer in two places (USB and monitor) is rather inconvenient, but also getting an KVM switch that can do 4K@60Hz was out of question.

    Luckily, hackers gonna hack, everything, and not only receipt printers. There is a tool called ddcutil that can talk to your monitor and change various settings. And udev can execute commands when (USB) devices connect… You see where this is going?

  • An introduction to hashing and checksums in Linux | Enable Sysadmin

    Always wondered how to make use of a checksum? This introduction shows you what they mean, and how to use the proper tools to verify the integrity of a file.

  • How to remove background microphone noise in Windows, Mac, Linux

    Noisetorch is an open-source Linux application that allows you to create a virtual microphone that suppresses background noise. To filter out background noise in an application, simply select the virtual microphone instead of your regular microphone, and the application will filter out background noise.

  • Craig Small: Percent CPU for processes

    The ps program gives a snapshot of the processes running on your Unix-like system. On most Linux installations, this will be the ps program from the procps project.

    While you can get a lot of information from the tool, a lot of the fields need further explanation or can give “wrong” or confusing information; or putting it another way, they provide the right information that looks wrong.

    One of these confusing fields is the %CPU or pcpu field. You can see this as the third field with the ps aux command. You only really need the u option to see it, but ps aux is a pretty common invokation.

»

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today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. 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 installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.

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