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today's howtos

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HowTos
  • How to create a Linux EC2 instance step by step on Amazon AWS

    Amazon EC2 (Amazon Elastic Compute Cloud) is a part of AWS product offerings, where users can rent virtual servers in the AWS public cloud. You pay for rented compute resources (CPU, memory, hard drive) at per-second granularity on a "pay-as-you-go" basis. For those of you who have just started with Amazon EC2, this tutorial covers a step-by-step procedure to create a Linux instance on AWS EC2 platform.

  • What’s with cp --reflink: failed to clone: Invalid argument?

    Most modern copy-on-write file systems, such as Btrfs and XFS, support file cloning. (OpenZFS being the notable exception.) However, the tools that support this space-saving innovation can be difficult to use. Here’s an example situation detailing how the simple copy (cp) command on Linux can make it hard to understand what’s going on.

    As an example, here’s a quick command set that will create a file and a directory, disable copy-on-write on the directory, and then attempt to clone the file into the directory. It uses commands from gnu-coreutils and e2fsprogs packages, and assumes you’re working on a file cloning-capable file system.

  • Set Up SSH Two-Factor Authentication (2FA) on CentOS/RHEL Server

    This tutorial will show you how to set up SSH two-factor authentication on CentOS/RHEL server using the well-known Google Authenticator. It will greatly improve the security of SSH service on your CentOS/RHEL server.

  • How to Install PHP 8.0 & PECL Extensions in Ubuntu 20.04, 18.04, 16.04 | UbuntuHandbook

    Want to install PHP 8.0 as well as many PECL extensions in your Ubuntu Server? Well there’s a well trusted PPA that contains the packages for all current Ubuntu releases.

    Ondřej Surý, a Debian Developer who maintains the official PHP packages in Debian, is maintaining an Ubuntu PPA that contains the latest PHP 5.6, PHP 7.0, PHP 7.1, PHP 7.2, PHP 7.3, PHP 7.4, and PHP 8.0 packages as well as PECL extensions for all current Ubuntu releases.

  • Install and Configure Prometheus Monitoring on Kubernetes

    We are going to deploy Prometheus to monitor Kubernetes nodes and more.

  • Command to install Vmware tools on Ubuntu using terminal

    Vmware workstation Player is one of the best available virtualization platforms to run various Linux, Android, and Windows virtual machines. However, to adapt the host display and increase the performance of installed guest os or VMs it needs a set of tools called VMware Tools to install on Linux, Windows, and other supported OS.

    VMware tools let us enable guests to host or vice versa content copy-paste (clipboard), drag and drop facility to transfer folders and files, and let the guest os to adapt the resolution of the host display.

    Although we can install VMware Tools using the graphical options of VMware workstation player, however, on Linux this becomes a lot easier and straightforward with the help of a command-line terminal.

More in Tux Machines

Rocket League Still Thriving on Steam While Delisted

As you can see from the above chart, the Rocket League community on Steam has never been as active as now, even though the game is officially delisted. The game is alive and well and continues to be receive frequent updates on Steam – and the increase of the player base through EGS has potentially made the game more enticing than ever to play online, regardless of the platform. Wile you cannot purchase Rocket League directly on Steam anymore, it can still be obtained through third party resellers. Such third party key are selling at crazy prices, sometimes above 100 USD. [...] Also, this is a reminder that Rocket League still works fine on Linux even after the termination of the native port and the big Epic client update in September 2020… Read more

Small Image Tools that Pack a Real Punch

The spotlight usually focuses on the heavyweight Linux graphics tools such as GIMP, Shotwell, digiKam, Inkscape, and Krita. However, there are many other open source graphics tools that merit attention. Linux offers a vast collection of open source small utilities that perform functions ranging from the obvious to the bizarre. It is the quality and selection of these tools that help Linux stand out as a productive environment. A good utility cooperates with other applications, integrating seamlessly. Although command-line tools are very useful for updating, configuring, and repairing a system, their benefits are not only confined to system administration. The majority of the applications featured in this article are command-line tools. They are very light on system resources, fast and efficient, don’t rely on a windowing system, and are great for integrating with other applications and scripting. The term lightweight is a label attached to computer software which is relatively simpler or faster than its counterparts. Feature bloat is endemic in software especially commercial software. Often, the easiest way to persuade users to upgrade to the latest version is to add new spangly features. This happens with open source software (to a lesser degree), and open source graphics software is not immune to feature bloat. Well, there is no feature bloat here! To provide an insight into the quality of software that is available, we have compiled a list of small image tools that are incredibly useful. Read more

Debian: Rejections, LTS Work, and Bugfixes

  • Thorsten Alteholz: My Debian Activities in February 2021

    FTP master This month I accepted 162 and rejected 28 packages, which is again a small increase compared to last month. The overall number of packages that got accepted was 291. Debian LTS This was my eightieth month that I did some work for the Debian LTS initiative, started by Raphael Hertzog at Freexian.

  • RCBW 21.9 – jwiltshire.org.uk

    A recent upload of electrum suffers from the serious bug #981374. On the face of it this is just a missing package dependency: can you help with testing and preparing an updated package to fix this? You don’t need to be a Debian Developer to get stuck into this one!

Videos and Shows: KDE Community Edition PinePhone and This Week in Linux

  • KDE Community Edition PinePhone Unboxing and First Try! - YouTube

    In this video I'm "unboxing" (or, rather, showing the box and its contents) of the pinephone, and trying it for my first time!

  • This Week in Linux 141: GRUB 2 Security Flaw, Linux Mint to Force Updates?, Valve’s Steam Link

    On this episode of This Week in Linux, we’re going to try something different with the show. Let me know what you think of the changes. This episode is completely stacked with exciting news, we’ve got a ton of Distro News from Ubuntu, openSUSE, Linux Mint, SystemRescue, IPFire, and even Linux From Scratch. A vulnerability was found in GRUB 2 that lets someone bypass Secure Boot so we’ll talk about that and just how bad is it? The EU announced some great news related to Right to Repair. Valve has announced that Steam Link is now available on Linux and it’s a real game changer. We’ve also got some media production news to check out this week from Blender, Ardour and a new synthesizer called Vital. All that and much more on Your Weekly Source for Linux GNews!