Public Key Authentication with OpenSSH is preferred, as it's a much stronger method of authenticating to your servers when compared to using password authentication. In fact, password authentication in OpenSSH should always be disabled. But before you can password authentication, you'll need to set up public key authentication, and that's exactly what we'll do in today's video.
When it comes to command line installations of Linux (and other operating systems), the scariest part for most people is partitioning and formatting your drives. But it's not that complicated, and tools like fdisk make it really simple.
The 5.15-rc2 kernel prepatch is out for testing.
Linux kernel creator Linux Torvalds has announced Linux 5.15-rc2, the second release candidate for the next version of the Linux kernel.
Torvalds's weekly Sunday wrap-up marked the progress in the Linux kernel but he has also taken the time to point out the thirtieth anniversary of Linux v0.01, which he uploaded from Helsinki on the evening of September 17, 1991.
NVIDIA today released the NVIDIA 470.74 driver for Linux from their "Production Branch" which includes some important bug fixes so you might want to upgrade now if you've been holding off.
One issue that has been coming up for users of Steam Play Proton is that Direct3D 12 games have been seeing high system memory usage, which has caused many Windows games to become unplayable. Thankfully this driver fixes that! Thanks to that fix most people should be able to upgrade to 470.74.
Good news for NVIDIA users who want to upgrade their distributions to Linux 5.14 as NVIDIA 470.74 is here with a fix for bug that caused the nvidia-drm.ko kernel module to crash when loading with DRM-KMS enabled (modeset=1) on the Linux 5.14 kernel series.
In addition, it improves support for the Mozilla Firefox web browser to prevent visual corruption by adding an application profile to disable FXAA (also available for FreeBSD and Solaris systems), it fixes a Vulkan performance regression that affected the rFactor2 computer racing simulator game, and addresses a bug that could cause GPU apps to exit when resuming from suspend.
NVIDIA has released their latest 470 series Linux driver point release.
The NVIDIA 470 series Linux proprietary driver continues to mature with today's 470.74 driver release to kick off a new week.
The NVIDIA 470.74 Linux driver has a fix around high system memory usage for some games with VKD3D-Proton for running Direct3D 12 atop Vulkan. There is also a notable fix to ensure FXAA is disabled for Mozilla Firefox to prevent visual corruption. There is also a Vulkan performance regression fix for rFactor2.
I got a request recently to fix up the WebGL Aquarium demo. I’ve had this bookmarked for a while since it’s one of the only test cases for GL_EXT_multisampled_render_to_texture I’m aware of, at least when running Chrome in EGL mode.
Naturally, I decided to do both at once since this would be yet another extension that no native desktop driver in Mesa currently supports.
This release introduces support for touchpad gestures that will be available as part of X server 21.1. Additionally high-resolution scrolling data is now acquired from libinput if available and sent downstream to X server. The default scroll distance has been bumped to 120 in the process, but this should not affect correctly written clients.
For those continuing to make use of the X.Org Server, xf86-input-libinput 1.2 is now available for integrating the latest functionality of libinput input handling library.
Libinput 1.19 released last week with support for hold gesture types and high resolution wheel scrolling. The xf86-input-libinput 1.2 release for this X.Org DDX now supports touchpad gestures and high resolution scrolling data as well when pairing this driver with libinput 1.19. In the case of the hold gestures, it requires to be used in conjunction with the forthcoming X.Org Server 21.1 release.
NVIDIA is contributing a new open-source driver to the upstream Linux kernel for dealing with upcoming laptops where the backlight controls are handled by the device's embedded controller (EC).
With Linux 5.16 later this year NVIDIA is ready with the "wmaa-backlight-wmi" driver for EC-based backlight controls for upcoming laptop/notebook computers.
Earlier this year AMD went public with prototyping CRIU support for Radeon GPUs around ROCm to be able to checkpoint/freeze running compute workloads and to then restore them at a later point. This CRIU focus is driven by their big accelerator needs and forthcoming supercomputers for migrating workloads particularly within containers. AMD continues working on CRIU support for GPUs and last week provided an update on the project.
Micro command-line text editor is designed to replace Nano as the text editor for the masses. It is modern and easy to use cross-platform text editor.
A newcomer to the wonderful world of Linux will eventually need to place or alter some text in a file. In addition to, numerous programs and system settings in Linux are tucked away in text files. You can open these with your default text editor such as Gedit, Kate, Mousepad or Pluma, but the terminal is often faster, especially when you need administrator permissions.
And so we come to Vi or Vim, but they are not the easiest for new Linux users. Fortunately, most Linux distributions include a text editor called Nano as a standard utility. For most uses, Nano is easy to use and it doesn’t require a significant learning curve. But you don’t have to settle on Nano. There is a middle ground. Something that is a little better than Nano, but certainly not so difficult to learn as Vim, and this is the Micro text editor.
You may have come across several screenshot tools available for Linux. However, a dedicated screen annotation tool along with the ability to take screenshots? And, with cross-platform support?
Well, that sounds even better!
While you get many tools to beautify your screenshots and the screenshot tools like Flameshot, Pensela lets you focus on annotations first.
It focuses on offering several annotation options while giving you the ability to take full-size screenshots.
Here, I shall highlight some of its features along with my experience using it.
For those not in the known, Giada is a universal music production software that can be used as a loop machine, sample player, song editor, live recorder, FX processor, or MIDI controller. The new release, Giada 0.18.2, is here to introduce new features like stereo in/out audio meters and a revamped Action Editor for better usability and support for displaying the play head.
For connoisseurs, it also implements queue for MIDI events, simplifies the Event Dispatcher’s event type function, moves the JACK transport operations to the new JackTransport class, adds support for always picking sample rates from the first audio device when using JACK, and adds AtomicSwapper as a git submodule.
gThumb image viewer and organizer announced version 3.12.0 as the new stable release series!
gThumb 3.12.0 is the new stable series since the last 3.10.x, while the 3.11.x is the development release.
Either because you got tired of your operating system or you ran out of support when using old systems, if you decided that it was a good idea to move to Linux and you do not have much experience with the subject, you may be somewhat lost when it comes to installing the applications that already you used or looking for a replacement for them .
The most important thing to keep in mind is that in some exceptional cases such as Microsoft Office and Adobe’s suite of creative apps, most of the very popular software has versions for Linux or at least one alternative that covers exactly the same needs, If not, your new favorite word must be “adaptation.”, so in this article we discover Top Essential Linux Apps
I've been happy using Vagrant for quite a while now. I work with several DevOps tools, and installing them all on one system can get complicated. Vagrant lets you do cool things without breaking your system because you don't have to experiment on your production system at all.
If you're familiar with VirtualBox or GNOME Boxes, then learning Vagrant is easy. Vagrant is a simple and clean interface for working with virtual machines. A single config file, called Vagrantfile, allows you to customize your virtual machines (called Vagrant boxes). A simple command-line interface lets you start, stop, suspend, or destroy your boxes.
Thanks to a partnership between Collabora and Huawei is now possible to build Gstreamer with just the features required for a specific application, reducing the binary size for space-constrained embedded systems.
Gstreamer is a very popular open-source multimedia framework used in a wide variety of projects and products, and with an impressive number of features spread over 30 libraries and more than 1600 elements in 230 plugins. This is not a problem on desktop PC and most smartphones, but the size of the binary may be too large for some systems, and until recently it was no easy way to customize GStreamer build for a specific application. But Collabora changed the code to allow gst-build to generate a minimal GStreamer build.
Like all packages belonging to the net-tools collection, the command netstat isn’t included in new Linux distributions such as Debian 11. This tutorial explains how to add the netstat command on Debian 11, its predecessors, and based Linux distributions such as Ubuntu.
Managing user accounts in any Linux distribution is one of the main tasks of the system administrators. The separate user accounts facilitate administrators to keep boundaries between the users and their processes on the system.
The article illustrates how to create user accounts via GUI and CLI in Manjaro Linux. We also describe predefined user account settings and files to configure the user environment. Lastly, we describe CLI tools usermod and userdel to modify account settings and delete the account.
X virtual framebuffer abbreviated as Xvfb is designed for Unix/ Linux Operating System. It allows you to execute graphical apps without having to use a monitor by connecting some input device. Virtual memory is used to perform graphical operations and it allows the program to run headlessly.
VMware Workstation Pro 16 can export virtual machines in OVF and OVA format. OVF stands for Open Virtualization Format, and OVA stands for Open Virtualization Appliances.
If you export a VMware Workstation Pro 16 virtual machine in OVF format, it will generate multiple files. On the other hand, if you export a VMware Workstation Pro 16 virtual machine in OVA format, it will generate only a single file. In that sense, OVA is easier to import on other hypervisors as you will have to deal with a single file.
In this article, I will show you how to export a VMware Workstation Pro 16 virtual machine in OVA format and import it on VMware Workstation Pro 16 again. So, let’s get started.
Under Ubuntu, the development of Mousetweaks was started as GSoc7 project in 2001. Mousetweaks is accessibility software and now is part of GNOME since version 2.22 is released. It adds various functionalities to your mouse settings, such as permitting a user to open the context menu by clicking and holding the left button of your mouse. So, Ubuntu users who want to manipulate one button can use this software. MouseTweaks has four click types: left-click, right-click, double-click, and drag-click. It also provides you the facility to temporarily lock the pointer on a particular area on the screen.
Now, you will learn about how to install and use MouseTweaks on your Ubuntu system. So let’s start!
SSH is known, as Secure Shell, is the most popular network protocol that helps establish a secure connection between a server and client. Using the SSH, users can safely run commands on remote servers, forward ports, create tunnels, and perform other actions. The SSH supports different kinds of authentication techniques. One of the most common mechanisms is password authentication, and the other one is public-key-based authentication. In both, the public key-based authentication is more secure and convenient than the password authentication method and based on digital signatures.
This article will provide you a step-by-step SSH key generation guide for the Ubuntu system. We will discuss how to generate an SSH key and set up SSH key-based authentication on Ubuntu 20.04 system. Let us dive into the details!
VNC is an acronym for Virtual Network Computing; freely available, open-source and alternative for the Microsoft RDP protocol (RDP). This technology is introduced for graphically sharing your desktop system by enabling you to operate another computer remotely using your mouse and keyboard. In other words, we can say that VNC is a set of protocols utilized for sharing desktop systems. It allows users who are not comfortable with the command-line to manage their settings, applications, and files remotely.
Now, you will learn about how to install and setup VNC on your Ubuntu system. So let’s start!
Imagine a situation where you’re trying to perform a system upgrade, or you want to try some new software on your virtual machine, and you’re not sure how things will turn out. In these situations, you can take a snapshot of the virtual machine before performing the task, do the task, and see how it goes. If you don’t like the result, you can always restore the virtual machine from the snapshot to take the virtual machine back in time before performing the task like magic.
Ubuntu and all other Debian Linux distributions offer a comprehensive set of package management systems that provides access to an organized database of over 6000 packages. The package management facilitates the task of package installation, configuration, upgrade, and removal. It also resolves the process of dependency-related issues by including the dependency resolution features.
PostgreSQL Join is a feature that allows you to combine columns from one table with one or more tables based on the common columns between the related tables.
Coalesce is a very useful function in PostgreSQL in Windows 10. We all know that we can insert both types of values in the PostgreSQL table, i.e., null or non-null. However, at times, we do not want to see those null values while processing our data. In this case, the coalesce function can be used whose purpose is to display the first non-null value that it encounters. This discussion will mainly revolve around exploring the usage of the coalesce function in PostgreSQL in Windows 10.
Concat means to make one or add up something. The Concat function or method has been extensively used in the database for decades to concatenate two or more words, strings, sentences, and many more. Concatenate function does nothing when applied on the NULL arguments. Within this article, we will demonstrate the operation of the Concat function within the PostgreSQL database. Let’s start by opening up the PostgreSQL GUI application named pdAdmin 4 from the start bar of the Windows 10 desktop. While it has been opened, let’s have some examples for concatenation of strings, characters, and numbers.
In Linux, whenever you want to delete a file, you’d use the rm command. When it comes to deleting a directory, however, things get a bit complex. To delete a directory, there’s a dedicated tool rmdir that can remove empty directories. What if the target directory contains a bunch of unnecessary files?
The Linux command wc followed by the -c flag (wc -c) can be used to count file bytes.
This tutorial explains how to count file bytes using both wc and du commands. After reading this tutorial, you will know how to easily count bytes, lines, and words in Linux.
Issues with Bluetooth connectivity in Linux go way back in time. Many users have experienced issues sharing their documents. Others have had issues connecting their PCs to their handhelds or headphones to enjoy their desired playlists or bingeing on videos. This issue still pertains to the recently released Ubuntu LTS versions. The Linux forums are full of user complaints regarding this matter. So, in this article, we provide the solution to this issue and resolve it once and for all.
Linux network namespaces are a Linux kernel feature allowing us to isolate network environments through virtualization. For example, using network namespaces, you can create separate network interfaces and routing tables that are isolated from the rest of the system and operate independently.
To understand namespaces easily, it is worth saying Linux namespaces are the basis of container technologies like Docker or Kubernetes.
For now, Linux includes 6 types of namespaces: pid, net, uts, mnt, ipc, and user. This tutorial focuses on Linux network namespaces.
If you command lsns, it will display all existing namespaces in your system, as shown in the image below.
The bc command stands for Basic Calculator in Linux. We use the bc command as a command-line calculator. The bc command offers the capabilities of a simple scientific calculator or any financial calculator. This language allows the execution of statements interactively. Also, we can use the numbers having arbitrary precision with the bc command language.
Arithmetic calculations are fundamental operations in programming languages. We can use the bc command language as a scripting language and an interactive shell for mathematics.
The bc command line can perform Mathematical, Boolean, and Logical operations, and many more. The syntax of the bc command line is somehow similar to the C language.
In this video, I am going to show how to install Kali Linux 2021.3
Did you know that we can identify which operating system is running on a remote system by simply pinging it? Yes! In this brief guide, we will see how to determine operating system with TTL value and Ping command. This method should work on any operating system that has Ping command line utlity.
There are plenty of commands, applications, and utilities exists to find out the OS of a remote system. However, finding operating system type with TTL is super easy!
You can quickly detect whether a system is running with Linux, or Windows or any other OS by looking at the TTL value from the output of the ping command. You don't need any extra applications to detect a remote system's OS.
While working as an application developer, it is common practice that some projects require different compiler versions for handling source code. With the rapid increase of software technology, you often find yourself where you need to use a specific compiler for a project. Today, different compiler versions are using for compiling the C programs. Here, we will talk about the G++ GNU compiler; a Linux system compiler specifically used to compile C++ programs. The file extensions of these programs are .c and .cpp that are compiled using the G++ compiler.
This article aims to provide a detailed guide on installing and using the G++ compiler on the Ubuntu 20.04 LTS system. You can achieve this goal by installing some development tools named build-essential packages on your system.
JBoss Enterprise Application Platform (EAP) is an enterprise-grade, open source platform to deploy highly transactional and scalable web applications. It includes everything you need to build, run, deploy, and manage enterprise-level Java applications in different environments—including on-premises, virtual environments, and private, public, and hybrid clouds.
This article explains some of what I have learned during my time with JBoss EAP, its operating modes, installing it, and managing the JBoss service. I will also show how to build and deploy a sample web application archive (WAR) file so that you can learn alongside me.
Several weeks ago, I installed Kubuntu 20.04 on my IdeaPad Y50-70, a somewhat old but rather capable 15.6-inch laptop with a 4K screen resolution. Predictably, the device wasn't usable in its native screen mode, and I had to make everything bigger, scaling and all that. In the end, I managed to create an ergonomically comfortable setup, with two exceptions - the login menu, and the boot menu.
The former gave me some grief, but I was able to get it sorted. With GRUB, there were more problems. One, the menu wouldn't show, even though I had a dual-boot configuration in place. Two, the menu was tiny, with the text barely readable. So I embarked on a journey of GRUB modifications, hence this tutorial. Let me show you how you can make the GRUB menu bigger on HD/UHD displays.
NVMe stands for Non-Volatile Memory Express, and it refers to how software and storage communicate across PCIe and other protocols, including TCP. It's an open specification led by a non-profit organization and defines several forms of solid-state storage.
My laptop has an NVMe drive, as does my desktop. And they're fast. I love how quickly my computers boot and how quickly they're able to read and write data. There's no perceptible delay.
It also didn't take long for me to get curious about the technology driving this ultra-fast storage, so I did a little investigation. I learned that NVMe drives consume less power while delivering much faster access to data compared to even SSD drives over SATA. That was interesting, but I wanted to know more about my particular NVMe drives, and I wanted to know how they compared with other drives. Could I securely erase the drive? How could I check its integrity?
Those questions led me to an Internet search that yielded an open source project with a collection of tools to manage NVMe drives. It's called nvme-cli.
The email messenger, Delta Chat, is a Germany communication app which everyone can use and just works friends and family even without them using the same application. This article overviews it and give installation guide for Ubuntu and Android users. Let's chat!
Node.js is an open-source, cross-platform runtime environment for developing server-side and networking applications built on Chrome's V8 JavaScript engine. It uses an event-driven, non-blocking I/O model that makes it lightweight and efficient.
NPM(Node Package Manager) is the default package manager for Node.js. It comes installed when you install Node.js. You can do almost everything with it since it provides access to thousands of packages that can be downloaded and installed in your application's project directory through the command-line interface.
In this article, we will learn what Nodejs is and how to install it on a Linux machine using a non-root user account.
pgAdmin is a free and open-source graphical administration tool for PostgreSQL which is easy to use. It supports PostgreSQL 9.6 and above, and it can be run on multiple operating systems, including Windows, macOS, and Linux.
Filebeat is used to ship logs to logstash or Elastic search to filter and use them as per requirement. Whether you’re collecting from security devices, cloud, containers, hosts, or OT, Filebeat helps you keep the simple things simple by offering a lightweight way to forward and centralize logs and files.
Filebeat consists of two main components: inputs and harvesters. These components work together to tail files and send event data to the output that you specify.
An input is responsible for managing the harvesters and finding all sources to read from.
RADIUS is a AAA (authentication, authorization, and accounting) protocol that helps in controlling network access. In other words, RADIUS protocol is used for connection management between the Network Access Server (NAS) and Authentication server.
The connection between two ends(NAC-NAS or NAS-Authentication server) is initiated after a successful negotiation on the network layer by exchanging packets containing necessary information such as NAS identification, authentication port number etc. In simple words, it can be said that RADIUS provides authentication, authorization, and account information from an Authentication server to a device requesting access.
I upgraded my first servers from buster to bullseye over the weekend and it went very smoothly, so big thank you to all the debian developers who contributed your labor to the bullseye release!
This morning, however, I hit a snag when the first windows users tried to login. It seems like a putty bug.
First, the user received an error related to algorithm selection. I didn’t record the exact error and simply suggested that the user upgrade.
Once the user was running the latest version of putty (0.76), they received a new error:
In this tutorial, we are going to show you how to install the Gitea software on your VPS along with Nginx as a webserver and Free Let’s Encrypt certificate, using Ubuntu 20.04.
install gitea with nginx and free lets encrypt ssl on ubuntu 20.04 Gitea is software written in “Go” programing language and is similar to Bitbucket, GitHub, and Gitlab. The software is used for self-hosted Git service and is compatible with multiple operating systems like Linux, Windows, macOS, and ARM.
The installation will take no more than 10 minutes and you will enjoy it while installing it. Let’s get started!
In Linux, regular users and superusers are allowed to access services via password authentication. In the case a regular user can’t remember his/her password, a superuser can reset the password of a regular user right from the terminal. However, what if the superuser (or root user) loses his/her password? They will have to recover the lost password prior to booting into the login screen. This allows any malicious user with physical access to your Linux host to gain complete ownership. This article takes a look at how to recover a lost root password in Linux using two different methods.
Fedora has released their first official beta release for Fedora 35 that was made available on the 14th of September 2021. The new OS brings quite a few changes, most notably the Linux Kernel 5.14, Gnome 41, PHP 8, Flatpack third-party repository support, New panel for multitasking settings, Power profiles access from the system tray menu, and much more.
The tutorial below will teach you how to successfully upgrade Fedora 34 to the newly released Fedora 35 Beta.
“Wine” stands for “Wine Is Not an Emulator”, it is a free and popular program to run Windows applications on Linux such as Ubuntu, Debian, CentOS operating systems. As its name suggests Wine is not an emulator, but a runtime environment that ensures compatibility with Windows. It provides Windows programs a compatibility layer to work without actually having Win OS.
Even some Windows games can be played this way under Linux. You call up the “Wine” configuration via the terminal and the command “winecfg”. The user even can specify the particular Windows version such as Windows 10 including Windows 8 and 7 as well as Vista and Windows XP.
There’s no denying the fact that Linux gaming is getting better each day. Thanks to the Proton compatibility layer, which translates DirectX commands on Windows to Vulkan-understandable instructions on Linux, over 16,000 games in the Steam library can be played on Linux.
Proton is indeed a huge deal for Linux, especially with Valve using the same in its upcoming Steam Deck with Linux. But how exactly can we use Steam Proton to play Windows games on Linux? Read more to find out.
Have you ever gone to exit out of a Linux terminal, only to be warned there are stopped jobs? What are these mysterious things and how do you finally stop them? Let's figure out this puzzle.
The first thing you need to understand is what stopped jobs are. Basically, they are jobs that have been temporarily placed in the background. Say, for instance, you run the top command. Instead of actually closing it with Ctrl+C, you'd rather keep it running in the background, so you can recall it later. For that, you use the Ctrl+Z keyboard combination. When you do that, you place the command in the background.
DXVK 1.9.2 is here almost two months after the DXVK 1.9.1 release and introduces more bug fixes to reduce overall CPU overhead in Direct3D 9 and address several issues, as well as to improve support for several Windows games that some of you might want to play on your favorite GNU/Linux distributions.
Among these, there’s a fix for reflection rendering in Call of Cthulhu, a workaround for poor performance in the Crysis 3 and Homefront: The Revolution, improved gamma curve in GODS, a fix for incorrect rendering Fantasy Grounds, and a fix for blank screen in Paranormal Files.
DXVK 1.9.2 is out as the newest version of this key library necessary to the success of Valve's Steam Play (Proton) by translating Direct3D 9/10/11 calls to Vulkan for a much more performant Windows gaming experience on Linux.
DXVK 1.9.2 reduces the CPU overhead in its Direct3D 9 path while also contains a wide variety of fixes. There are many game-specific issues fixed in this release including for titles like Crysis 3, Homefront: The Revolution, Total War: Medieval 2, Need For Speed Heat, Payday, and other games.
DXVK, one of the major parts of Steam Play Proton that translates Direct 3D 9 / 10 / 11 to Vulkan has a new release out and there's plenty of nice fixes.
Performance has been a focus recently and this release improves on that for Direct 3D 9, thanks to a reduction in overall CPU overhead (something that will be useful for the Steam Deck). Improvements continued there for D3D9 thanks to fixes to various failures in Wine's D3D9 tests, various issues fix for "d3d9.evictManagedTexturesOnUnlock" and also for "d3d11.relaxedBarriers".
It's back again with some new games to make you laugh at your friends through. The Jackbox Party Pack 8 is set to release on October 14 along with continued Linux support.
As Debian GNU/Linux 11 “Bullseye” has been officially released last month, it was just a matter of time until the Emmabuntüs Collective put together the final details of their Emmabuntüs Debian Edition (DE) 4 release series, which is derived from the Debian GNU/Linux 11 operating system series, of course, supporting both the Xfce and LXQt desktop environments.
Powered by the long-term supported Linux 5.10 LTS kernel series, Emmabuntüs Debian Edition 4 1.00 features the latest and greatest Xfce 4.16 desktop environment, along with the LXQt 0.16.0 desktop environment, which you can select from the first run, an OEM install mode via the Calamares graphical installer, and new tools, including VeraCrypt, GtkHash, Linux Mint’s Warpinator, and zram-tools.
Red Hat Ceph Storage 5 is now generally available. This release includes support for NFSv4, additional disaster recovery capabilities for CephFS and RBD, as well as new security features and performance improvements.
Tekton Pipeline 0.14 introduced the finally clause in the Pipeline specification. This section is ideal for running anything just before exiting the pipeline, such as cleaning up any acquired resources, sending notifications, rolling back deployments, and more.
As defined on the Tekton website, the finally section takes a list of one or more tasks that are all executed in parallel after all tasks are finished executing — regardless of a success or a failure. The following code shows the finally section of a pipeline.
In this episode of our Developer Diaries series, JJ & Chris do a bit of pair programming to show how developers can use Instana for observability-driven development.
podman build (user namespace) and Rename. It seems like Debian bullseye, if I run podman, it runs in user namespace mode if you run it inside a regular user. That's fine, but it uses fuse overlayfs driver. Now I am yet to pinpoint what is happening, but rename() is handled in a weird way, I think it's broken. os.Rename() in golang is copying the file and not deleting the original file.
In response to the pandemic, Red Hat Training and Certification has allowed people to cancel or reschedule any previously scheduled classes or exams. Individual exam eligibilities have been extended multiple times since last year, and we have extended the period for which all certifications are considered current.
It is a job hunter’s dream market right now, with job openings hitting record highs month after month. The New York Times recently called this “the job market we’ve been waiting for.” That’s especially true for technology professionals, more in-demand than ever as organizations continue to double down on digital transformation and other technology-enabled business initiatives.
But a red-hot job market comes with its own challenges for job seekers. Combined with the potential of personal uncertainty (“Am I unhappy in my role, or just burned out?”) and macro ambiguity ("Is remote work here to stay?), tech pros on the hunt for new roles are encountering some thorny issues.
The SparkyLinux 2021.09 project develops a lightweight distribution based on Debian 12. The Sparky team has published a new update to the distribution’s semi-rolling branch which presents users with software from Debian’s development “Bookworm” branch.
The project’s release announcement lists the following changes: “Sparky 2021.09 of the (semi-)rolling line is out; it is based on Debian Testing ‘Bookworm’. Changes: repositories set to Debian ‘Bookworm’ and Sparky ‘Orion Belt’; all packages updated as of September 17, 2021; new backgrounds: desktop, login manager, Plymouth & boot screen, etc.; Linux kernel 5.10.46 (5.14.6 & 5.15-rc1 in Sparky unstable repos); GCC 10 still as default, but GCC 11 is also installed; no more Sparky Advanced Installed GUI, the Advanced installer works in text mode only now, the first window lets you choose the standard version of the installer or DEV version with disk encryption and LVM support; ‘sparky-upgrade’ text based tool is also preinstalled in CLI ISO; packages removed from ISO: mc, gparted; new package installed: lfm; Calamares 3.2.43.” People already running the semi-rolling branch of SparkyLinux do not need to re-install.
We still have some free slots and beds available for the "Debian Reunion Hamburg 2021" taking place in Hamburg at the venue of the 2018 & 2019 MiniDebConfs from Monday, Sep 27 2021 until Friday Oct 1 2021, with Sunday, Sep 26 2021 as arrival day.
The next new version of Ubuntu will be designated as 21.10. Why? Well, the versioning scheme of that Linux-based operating system uses a two digit year followed by a period and then a two digit month (yy.mm). With October being the 10th month, Ubuntu Linux 21.10 is merely weeks away.
Besides knowing the version number of the next Ubuntu release, we also know the code-name -- "Impish Indri." We shared that detail with you back in April of this year. And now, the official artwork of Ubuntu Linux 21.10 "Impish Indri" becomes available for download.
You can view the new artwork in wallpaper form at the top of this page -- there are a total of four. As you can see, two of them feature a cartoon indri mascot (a type of lemur), one in grey and the other using the official Ubuntu colors. The other two wallpapers are essentially the same, but without the animal in the middle. The Ubuntu developers share proper download links here.
Windowsfx is a Linux OS that borrows its look from various flavors of Microsoft’s operating system, including Windows 7 and Windows 10, and now it’s offering a version that looks just like Windows 11.
Myelectronics.nl has launched a 19-inch 3U rack mount taking up to twelve NVIDIA Jetson Nano or Jetson Xavier NX boards building on its experience with rack mount for Raspberry Pi introduced last year.
The new model also includes front removal mounting systems so that you can replace a Jetson board without having to completely remove the rack mount, and even without having to power off the remaining boards since the boards would have to be powered from the DC jack or (not recommended) the Micro USB port on the front panel. PoE is probably not an option, albeit available on the Nano board, due to mechanical constraints.
Until recently the standard way to work with GPIO in Linux was to use the sysfs interface and you will see a lot of articles advocating its use and you will encounter many programs making use of it. Sysfs was deprecated in Linux 4.8 at the end of 2016 and is due for removal from the kernel in 2020. Of course, it takes time for Linux distributions to make use of the latest kernels. At the time of writing Pi OS, formerly Raspbian, is using Linux 4.19 released two years earlier. Nevertheless, Sysfs gpio will soon be removed and while you still need to know about it to cope with legacy software, you shouldn’t use it for new projects. You can find out how it works in Appendix I.
Its replacement is the GPIO character device and, while this looks superficially like the old sysfs interface, it has many major differences. Although it has some advantages, it also is slightly more complex and can no longer be used from the command line – it is a program-only interface. This said, there are some simple utility programs that are fairly standard and allow GPIO control from the command line. These are covered in the first part of the chapter, even though they are unlikely to be the main way that you work with the new interface. There is also a wrapper library called gpiod which isn’t necessary for simple access to the GPIO lines. If you want to know more see - Raspberry Pi IOT in C With Linux Drivers, ISBN:9781871962642
Here at Hackaday we can never get enough of odd clocks, and we’re delighted to see [Dan O’Shea]’s creation called the Wifi-Telnet-FPGA-NTSC Drunk Wall Clock. That mouthful is an accurate description of what it does: at the heart of the device is an ESP32 that uses WiFi to connect to a Raspberry Pi. It then telnets into the system, logs in, and requests the current time using the Linux date command. So far, so ordinary.
Almost no one enjoys being suddenly awakened by a loud, blaring alarm clock, as the sudden rush of panic can contribute to grogginess and stress. To alleviate this problem, Norwegian makers Applied Procrastination wanted to created a lamp that simulates a sunrise to give users a calmer, more natural waking up experience. They came up with a design utilizing an old LCD panel that has had its internals replaced by a string of LED lights to give a pleasant and diffused glow when activated, which they call the “Zom-B-Gone!”
A self-balancing robot isn’t a new idea, but we liked the aesthetics of [Maker ATOM’s] build. The use of a breadboard and a printed bracket looks good, as you can see in the video, below.
Like most first-time projects, though, there were some lessons learned. The power supply needs a little work and the range of balance compliance didn’t meet expectations. But those problems are soluble and, as usual, you often learn more from working through issues like these.
The heart of the system is an MPU6050 which provides a gyroscope and accelerometer along with fusion capability onboard. The availability of libraries for the sensor and the PID controller makes the project pretty simple to finish.
So on part one, we managed to compile kalk with emulator, and generated ArchLinux package to install on our PinePhone. However, emulator is slow, and compiling with emulator isn’t cross compile. Today, we’ll be using real cross compiler to build kalk package.
To be able to cross compile, we need cross compiler and target platform’s libraries. On ArchLinux, there is aarch64-linux-gnu-gcc. But it’s sysroot option is bugged so we won’t use the cross compiler from pacman this time. Instead, we’ll grab the toolchain from ArchLinux arm. The link is here. Since PinePhone is armv8, download the armv8 pre-built crosstool-ng toolchain. To keep everything nice and tidy, we store the toolchain in dedicated directory. I’m using ~/Develop/CrossCompile.
The newly written function for sharing content with Sailfish OS is the most obvious change in the new version 4.2.0, whose nickname Site Verla stands for a Unesco World Heritage and refers to the history of the paper industry in Finland.
Easier sharing
Previously, the interface for sharing content could be found in the respective apps themselves, but it has been revised for Sailfish OS 4.2.0 and now offers a system pop-up for selecting the sharing method. In this way, many authorizations in the applications could be reduced and the apps made more secure. If it was previously not possible for providers of third-party apps to use the sharing functionality via the new API, this will be possible in the future .
When I'm on the go, I need everything to work as efficiently as possible. And although you might be thinking, "But a web browser is as efficient as it gets, right?" That depends on what task you're doing and what site you're working with.
This is especially so in the modern age of web applications and with constantly on-the-move staff. Instead of always having a full-blown, kitchen-sink-type web browser, sometimes we need something a bit more stripped-down, a tool that is geared toward one thing and one thing only—web applications.
Actually, Ubuntu 21.10 “Impish Indri”, the release of which is scheduled for October 14th, is already in the Feature Freeze. Last week, however, an application was received for an exception that provides for the standard installation of Firefox in consultation with Mozilla in Snap format, as is already the case with Google’s Chromium browser.
The measure, which has now been approved, should offer enough time to correct errors until Firefox as a snap becomes the standard for the desktop images of the next LTS version of Ubuntu in spring 2022. The snap package is to be created for the architectures amd64, armhf and arm64 . It is to be maintained by Mozilla and Canonical’s desktop team and published by Mozilla.
The measure affects users who install Ubuntu 21.10 or update to this version. This does not (yet) affect the other versions of Ubuntu with desktop environments that differ from GNOME. Linux Mint users should also be spared the change, as the Mint developers had already introduced the not Chromium snap . As can be seen in the corresponding blog entry on Ubuntu, the idea for Firefox as a snap came from Mozilla, which see the following advantages...
Spyware has been in the news recently with stories like the Apple security vulnerability that allowed devices to be infected without the owner knowing it, and a former editor of The New York Observer being charged with a felony for unlawfully spying on his spouse with spyware. Spyware is a sub-category of malware that’s aimed at surveilling the behavior of human target(s) using a given device where the spyware is running. This surveillance could include but is not limited to logging keystrokes, capturing what websites you are visiting, looking at your locally stored files/passwords, and capturing audio or video within proximity to the device.
bugbug started as a project to automatically assign a type to bugs (defect vs enhancement vs task, back when we introduced the “type” we needed a way to fill it for already existing bugs), and then evolved to be a platform to build ML models on bug reports: we now have many models, some of which are being used on Bugzilla, e.g. to assign a type, to assign a component, to close bugs detected as spam, to detect “regression” bugs, and so on.
Then, it evolved to be a platform to build ML models for generic software engineering purposes: we now no longer only have models that operate on bug reports, but also on test data, patches/commits (e.g. to choose which tests to run for a given patch and to evaluate the regression riskiness associated to a patch), and so on.
The LibreOffice 2021 Schedule Mobile App is immediately available on Google Play and F-Droid. From the F-Droid page is also possible to download the APK, although by installing that way you will not receive update notifications.
The mobile app, for Android smartphones and tablets, shows the conference schedule: by swiping right and left, the user can switch between the three rooms, while a drop down menu allows to chose one of the three days. By tapping on each of the talks, it is possible to star it to create a personal conference schedule, and to set an alarm to avoid losing the important presentations. Changes to the schedule will be immediately reflected on the mobile app, although it is always possible to force a refresh, and to show the latest changes.
In addition to this episode’s small list of big things, Josepha Haden Chomphosy reviews the upcoming 5.9 WordPress release and its Full Site Editing features.
The 2021 federal election in Germany (26.09.2021) is just around the corner. Digital sovereignty, through the use of Free Software, is at the centre of our exchange with the political parties, which we have also conducted via our organisations' election questions to the parties. We are pleased that, in a further step, we were able to talk personally with candidates from all parties with a chance of participating in the next government and ask them in more depth what they and their party would like to do to advance digitisation in Germany with Free software.
An ordinary vector encountered in C++ programming, is a vector of objects of the same type. These objects can be fundamental objects or objects instantiated from a class. This article illustrates examples of vector of pointers, to same object type. To use a C++ vector, the program has to include the vector library, with a directive.
All the vector code for this article is in the main() function, unless otherwise indicated. Vector of pointers to different types, is however, addressed at the end of the article. In order to appreciate vector-of-pointers, it is good to recall the knowledge for vector of objects.
A string object instantiated from the string class is a list data structure. The list is a series of characters, and it is appreciated as such. The C++ string object has many methods. However, it lacks certain operations, which are best offered if it is seen as a stream.
Once you learn how to code, you can start building great applications that solve a problem or join businesses and companies looking for those with stellar coding skills. An important tool you will need is a code editor. Code editors come with various features that make it easy to code, create great applications, debug code, deploy code and so much more. Today, we are going to focus on five of the best code editors for Linux users. Keeping with the theme of Linux, the code editors below are free, open-source, or both.
A lot of times, people ask what’s Ruby good for apart from Rails. Ruby is great for various tasks from several different domains, and today, I would like to share how anybody can use Ruby in publishing ebooks.
Since I used some Ruby tasks in publishing my first-ever ebook Deployment from Scratch, it crossed my mind to write down why I think Ruby is great for publishing ebooks.
Join online as the community meets on November 3. Qt World Summit gathers together more than 5 000 developers, designers, managers and executives from over 90 countries around the world.
Daniel Sockwell had a very busy week, asking all sorts of questions (1) (2), looking to improve the documentation on list assignments and soliciting feedback about that. And Daniel also published a blog post about the concept of labelling your code, in which they posit that “Comments are prose; labels are identifiers” (which resulted in quite a discussion on /r/rakulang). Thought provoking stuff!
With the m68k community continuing to be active around supporting the vintage Motorola 68000 series with modern open-source software, Rust has now merged support for these old processors.
With the forthcoming LLVM/Clang 13 release adding an M68k back-end, Rust that leverages LLVM is now adding support for the Motorola 68000 series processors.
Want to learn more about developing applications with Quarkus? Download our free ebook Quarkus for Spring Developers, which helps Java developers familiar with Spring make a quick and easy transition.
The tools available in the Spring ecosystem make it easy to get started with building applications. However, the same is true for Quarkus, which has many additional features and capabilities aimed at improving the developer experience. A Spring developer can quickly get started working with a Quarkus project and immediately become more productive, as we'll see in this article. Plug-ins and tooling are available for most major IDEs, including VSCode, IntelliJ, and Eclipse.
Part of “slow” is transcribing the text from the slide windows; my dad’s handwriting is not always easy to decipher. It’s a good thing this picture was labeled (as “the project”, no less) and dated, so I know it’s the earliest photo of me.
I asked on twitter what people feel was easier to learn 15 years ago. One example a lot of people mentioned was the command line.
I was initially a bit surprised by this, but when I thought about it makes sense – if you were a web developer 15 years ago, it’s more likely that you’d be asked to set up a Linux server. That means installing packages, editing config files, and all kinds of things that would get you fluent at the command line. But today a lot of that is abstracted away and not as big a part of people’s jobs. For example if your site is running on Heroku, you barely have to know that there’s a server there at all.
I think this applies to a lot more things than the command line – networking is more abstracted away than it used to be too! In a lot of web frameworks, you just set up some routes and functions to handle those routes, and you’re done!
Abstractions are great, but they’re also leaky, and to do great work you sometimes need to learn about what lives underneath the abstraction.
Nearly 4 weeks after contracting COVID-19 I am finally able to return to work…
Yes I have had both Jabs (my 2nd dose was back in June), and this knocked me for six. I spent most of the time in bed, and only started to get up and about 10 days ago.
I passed this on to both my wife and daughter (my wife has also been double jabbed), fortunately they didn’t get it as bad as me and have been back at work / school for the last week. I also passed it on to a friend at the UK Debian BBQ, hosted once again by Sledge and Randombird, before I started showing symptoms. Fortunately (after a lot of PCR tests for attendees) it doesn’t look like I passed it to anyone else
I wouldn’t wish this on anyone.
[...]
Even after vaccination, it is still possible to both catch and spread this virus. Fortunately having been vaccinated my resulting illness was (statistically) less bad than it would otherwise have been.
Otobo is a free self-hosted ticketing system with convincing functionality AND optics. It is the most web based flexible system come to enhance The efficiency and transparency of your business communication.
Otobo supports different communication channels which include phone, customer portal, self-managed tickets, email, and text messages.
At the Open Source Summit in Seattle, The Linux Foundation, and edX, the leading massive open online course (MOOC) provider released the 2021 Open Source Jobs Report. In this survey of 200 technical hiring managers and 750 open-source pros, the organizations found more demand for top open-source workers than ever. On top of that, 92% of managers are having trouble finding enough talent and many of them are also having fits holding on to their existing senior open-source staffers.
Kali Linux version 2021.3 has been released with new tools, though its makers explain that some features which make it good for penetration testing also make it bad for general use.
The specialist Linux distribution, based on Debian, is designed for security professionals (and also handy for administrators confronted by problems such as a standalone Windows PC and a user with a lost password). It is sponsored by a US company called Offensive Security, who do information security training and penetration testing.
The Linux OS has historically been regarded as more secure than Windows or macOS thanks to how it handles user permissions and because it’s open-source software. One of the other big reasons for that faith in Linux’s security was the fact that it isn’t as popular among users worldwide. With Windows being the leader in terms of user adoption.
While experts still agree that Linux is a secure OS, some very valid concerns have started popping up in recent years. For one, Linux has seen a boost in popularity as of late, paired with an increase in interest from cybercriminals. But more than that, despite its secure design, Linux is vulnerable to attack.
The warning comes from researchers at Lumen, who say at least one threat actor is trying to leverage a capability in Windows Subsystem for Linux (WSL) to squirm into an IT environment. WSL runs a Linux environment within Windows, allowing the use of Linux command-line tools without the overhead of a virtual machine. Among those who take advantage of it are application developers, who use it as a convenient method for pulling in open-source software.
Apple and Google removed an app meant to coordinate protest voting in this weekend’s Russian elections from the country on Friday, a blow to the opponents of President Vladimir V. Putin and a display of Silicon Valley’s limits when it comes to resisting crackdowns on dissent around the world.
The decisions came after Russian authorities, who claim the app is illegal, threatened to prosecute local employees of Apple and Google — a sharp escalation in the Kremlin’s campaign to rein in the country’s largely uncensored internet. A person familiar with Google’s decision said the authorities had named specific individuals who would face prosecution, prompting it to remove the app.
The person declined to be identified for fear of angering the Russian government. Google has more than 100 employees in the country.
Apple did not respond to phone calls, emails or text messages seeking comment.
The global dominance of tech giants serves as a convenient online chokepoint for authoritarian governments to crack down on dissent or rig elections, critics of Apple and Google said Friday.
The companies were facing international outrage after pulling a Russian opposition voting app off their online marketplaces in response to authorities' escalating pressure, including arrest threats.
Google and Apple, whose operating systems run on 99 percent of the world's smartphones, have a stranglehold on the markets for the applications that allow users to do everything from watch movies to hail a ride.
This weekend, Russia goes to the polls. Yet voters who hope to register their resistance to the ruling party, amid its efforts to restrict who can appear on the ballot, have been deprived of a crucial tool — because Apple and Google gave in to the bullies.
Now that the Taliban are back in control, a series of reported internet outages in Afghanistan is fueling fears among Afghan residents that the group is already using their newfound power to isolate protesters, quash dissent, and exert their influence across the country.
In Panjshir—where resistance leader Ahmad Massoud and Afghanistan’s former vice president are working to resist the Taliban’s resurgence—the Taliban have already forced a communications and internet blackout, according to data from Access Now, a digital rights organization.
“According to our data… the Taliban has cut off the internet, along with phone connections and all other forms of communication, in the province of Panjshir,” Felicia Anthonio, a campaigner for Access Now, which has been monitoring internet connectivity in Afghanistan, told The Daily Beast. “We believe this is in order to curtail resistance in this area, the only area that is still holding out against their takeover.”
After multiple rounds of consultation, the TRAI released its final recommendations on the Roadmap to promote broadband connectivity and enhanced broadband speed. Some of the recommendations we had made during the consultations were reflected in the final report, albeit with certain modifications.
Pinsent Masons has expanded its IP practice in London through the addition of Gina Bicknell (45) to its partnership. Bicknell joins from a previous role as counsel at Freshfields Bruckhaus Deringer. She brings 20 years of experience in life sciences in the patent and IP field, with a special focus on transactions.
The IAM Patent Office Benchmarking Survey 2021 will provide insights on the prosecution landscape at a time when many organisations are re-thinking their patent management strategies
RWS, the world’s leading provider of technology-enabled language, content management, and intellectual property services, is expanding their distribution by making their services available to customers, through Symphony, in a one-stop-shop delivery model. The combination of RWS’s services, provided through Symphony, will allow IP practitioners to more easily request translations, EP validation, and PCT/national filings, all within the one system that they use to manage their patent portfolio and IP lifecycle.
Respondents are leaving it later and later to disclose potential design arounds that may allow them to circumvent findings of patent infringement at the ITC, write Michael Renaud, Adam Rizk, and Matthew Karambelas of Mintz Levin. But all is not lost for complainants
Several sources confirmed to Managing IP that they’d spoken to Patrick Leahy’s office to provide input on new legislation, which could come out this week
Earlier this year, the German Federal Constitutional Court rejected two applications for a preliminary injunction against the German Act of Approval to the UPCA.
This cleared the way for Germany to ratify the Protocol on the Provisional Application of the UPCA, which provides for the institutional, organisational and financial sections of the UPCA to enter into force before the agreement becomes effective in its entirety. As the German Federal President signed the ratification bill on 7 August 2021 and it was promulgated on 12 August 2021, this ratification is expected to take place imminently.
