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today's howtos

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HowTos
  1. How To Install Contao on Ubuntu 20.04 LTS - idroot

    In this tutorial, we will show you how to install Contao on Ubuntu 20.04 LTS. For those of you who didn’t know, Contao’s is an open-source content management system (CMS). It is designed for ease of use to allow business owners and power users to create powerful and dynamic content websites. Contao can also be integrated into a regular Symfony application.

    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 Contao CMS on Ubuntu 20.04 (Focal Fossa). You can follow the same instructions for Ubuntu 18.04, 16.04, and any other Debian-based distribution like Linux Mint.

  2. Pin App Shortcuts to Ubuntu Desktop as easy as in Windows 10 via Extension | UbuntuHandbook

    Adding an app shortcut icon to the Desktop in Ubuntu is not that easy for beginners by default. User has to first open the folder that stores the app shortcut files (usually /usr/share/applications). Then drag and drop the .desktop files into user’s “Desktop” folder. Make executable in file properties dialog and finally select ‘Allow Launching‘ via context menu option.

    To make life easier, a Gnome extension is available to make the process to create a desktop shortcut for apps as easy as few clicks. Since Ubuntu uses full-screen app launcher, it’s not Windows 10/11 style drag and drop adding desktop icons. Instead, it adds ‘Add to Desktop‘ option to app icon’s context menu.

    Like in Linux Mint and/or Zorin OS, user just needs to search the app in ‘Show Applications’ or ‘Activities’ overview screen, right-click on the app icon, and finally click ‘Add to Desktop’ to pin to desktop.

  3. Backup And Restore Files Using Borg In Linux - OSTechNix

    In Linux, there are multiple backup tools providing functionality for system-level backup as well as user data backup. In this comprehensive article, we are going to look into what is BorgBackup and how to backup and restore files using Borg in Linux and Unix-like systems.

  4. Moodle Online Learning System Automated Installation and Upgrade - RoseHosting

    Moodle is a free, open-source, and one of the most popular learning management systems around the world. It helps you to create your online learning site in minutes. It allows both teachers and students to choose a time and place for training. It is customizable, user-friendly, and allows you to extend learning environments using plugins. Currently, it is used in many places including, schools, universities, workplaces, and other sectors.

    RoseHosting Cloud PaaS provides a one-click Moodle installer to automate the Moodle installation process on the cloud environment. You can set up Moodle, securely manage it through SSH, import/export any files, and perform other management operations from a single control panel.

    In this guide, we will explain how to install Moodle E-Learning System on the RoseHosting Cloud PaaS.

  5. LHB Linux Digest #21.21: Building Homelab on Budget, Alpine Linux, Certifications, Hypervisor and More
  6. How to download and install iTunes on your Chromebook

    Ah, the age-old question. You got a Chromebook but you are also an Apple user and you want to access your iTunes library on your shiny, new Chrome OS devices. Unfortunately, Apple has yet to – and likely never will – release an Android version of iTunes. Many users have made the move to Apple Music and are content using the Play Store version or simply navigating to Apple Music on the web. However, there are many that have an extensive iTunes library and still others use the storefront on a regular basis for purchases and media consumption. Wouldn’t it be nice if you could do so on your Chromebook?

    Well, where there’s a will, there’s a way and that way is via the Linux container on Chrome OS. Obviously, Apple has its own iTunes apps for iOS and macOS but the company also offers a Windows version of iTunes and that’s the path we’ll take to get the application on our Chromebook. First, you’ll need to ensure that your Chromebook supports Linux apps. To do so, simply head to the Chrome OS settings menu in the system tray. Click the gear icon and in the settings menu, click advanced. Click “Developers” and select the “turn on” button to install the Linux environment.

  7. Commands to Install Xrdp Server on Debian 11 Bullseye Linux

    Steps to Install XRDP Server on your Debian 11 Bullseye Linux to access its graphical user interface from Windows 10 or 11 using Remote Desktop Protocol (RDP).

    By default we cannot access Linux operating system using RDP on Windows, hence we need to install XRDP on our Debian Linux. For those who don’t know about the XRDP, it is an open-source adaptation of the Microsoft RDP protocol. This helps the users to establish remote access of PC from other PC or laptop.

  8. How to install Windows 11 on Ubuntu 20.04 using VirtualBox - Linux Shout

    Windows 11 is the latest Microsoft operating system that we can install on Ubuntu 20.04 focal fossa Linux to test it using VirtualBox. Here we let you know how?

    If you have just moved to Linux for some reason but there are some apps that only work on Windows such as Microsoft Office, Adobe, and others. Then running Windows using a Virtual machine is a good idea.

    For those who don’t know about VirtualBox, it is an open-source application to create and manage virtual machines on all popular operating systems.

  9. How to create a multiboot USB on Linux

    In this tutorial you will learn how to create a multiboot USB on Linux and Windows. Have you ever wanted to have multiple ISOs on a single USB and be able to boot to any operating system without having to reformat your USB flash drive any time you want to boot to another OS.

    Ventoy allows you to use one single USB flash drive to boot multiple operating systems, so all you need is one single flash drive and enough storage for all ISOs that you want to have on your device.

  10. Multiple MySQL instances on the same server - Unixcop

    Some weeks ago I’ve wrote an article about how to run different PHP versions on the same server. Mel like it and suggested me to do the same for MySQL and/or MariaDB. This is how to run multiple MySQL instances on the same server.

  11. Linux Essentials - The ps Command - Invidious

    The ps command is useful for taking a look at the processes that are running on your Linux system. In this video, I'll show you the basics of the ps command, and some variations you can use to show the output in different ways.

More in Tux Machines

Today in Techrights

today's leftovers

  • Last week of the Month of LibreOffice, May 2022!

    So far, 233 sticker packs have been awarded in the Month of LibreOffice, May 2022. But there’s still one more week to go – so if your name (or username) isn’t on the list, join in, help to make LibreOffice even better, and get some cool swag! We’ll have 10 bonus pieces of merchandise to give away, to 10 lucky people…

  • Firefox Nightly: These Weeks in Firefox: Issue 116
  • Mobiot is a system that lets anyone automate everyday objects

    So many tasks within a house can be reduced to a series of somewhat simple movements that are repeated each time that task is done, thus making it a prime target for automation. To make this process far easier than the traditional one of designing a robot by hand, writing some code and doing thorough testing, a team of researchers from UCLA and Texas A&M has created the Mobiot toolkit, which aims to combine each of these steps into a very straightforward application that takes care of the heavy lifting automatically.

  • Canonical at ISC High Performance 2022 | Ubuntu

    With ISC High Performance 2022 just around the corner, now is a great time to get in touch with Canonical on all things HPC ISC High Performance is one of the main events on High Performance Computing (HPC) and Supercomputing and all relevant topics in that space such as High Performance Data Analytics (HPDA), Artificial Intelligence and Machine Learning (AI/ML). It’s held in Germany each year, this time in Hamburg starting 30th of May and ending on the 1st of June

  • Access JFR data faster with Cryostat 2.1's new download APIs

    Cryostat is a tool for managing JDK Flight Recorder data on Kubernetes. This article explains how new download APIs based on JSON Web Tokens (JWTs) help facilitate a more responsive and efficient download workflow in the Cryostat 2.1 web client.

  • DrKonqi ❤️ coredumpd

    Since Plasma 5.24 DrKonqi, Plasma’s infamous crash reporter, has gained support to route crashes through coredumpd and it is amazing – albeit a bit unused. That is why I’m telling you about it now because it’s matured a bit and is even more amazing – albeit still unused, I hope that will change. To explain what any of this does I have to explain some basics first, so we are on the same page… Most applications made by KDE will generally rely on KCrash, a KDE framework that implements crash handling, to, well, handle crashes. The way this works depends a bit on the operating system but one way or another when an application encounters a fault it first stops to think for a moment, about the meaning of life and whatever else, we call that “catching the crash”, during that time frame we can apply further diagnostics to help later figure out what went wrong. On POSIX systems specifically, we generate a backtrace and send that off to our bugzilla for handling by a developer – that is in essence the job of DrKonqi.

Programming Leftovers

  • Dirk Eddelbuettel: RcppAPT 0.0.9: Minor Update

    A new version of the RcppAPT package with the R interface to the C++ library behind the awesome apt, apt-get, apt-cache, … commands and their cache powering Debian, Ubuntu and the like arrived on CRAN earlier today. RcppAPT allows you to query the (Debian or Ubuntu) package dependency graph at will, with build-dependencies (if you have deb-src entries), reverse dependencies, and all other goodies. See the vignette and examples for illustrations.

  • Botonic: An open-source React framework for building Conversational apps
  • ReacType: Open-source tool to Prototype your React project
  • OpenFeature to Bring Open Source Standard to Feature Flags

    Feature flags are an important part of software development, and with the new open source OpenFeature effort they could become even easier to use.

  • gfldex: Reducing sets
  • What's In That String?

    One of the steps of debugging Perl can be to find out what is actually in a string. There are a number of more-or-less informative ways to do this, and I thought I would compare them. For this I used two short strings. The first was just the concatenation of the characters whose ordinals are 24 through 39; that is, 16 ASCII characters straddling the divide between control characters and printable characters. The second was a small variation on the first, made by removing the last character and appending "\N{U+100}" (a.k.a. "\N{LATIN CAPITAL A WITH MACRON}") to force the string's internal representation to be upgraded. The results given below include the version of the module used, the actual code snippet that generated the output, the output itself, and any comments I thought relevant. All subroutines used to dump strings are exportable except for those called as methods. The sample code makes fully-qualified calls because of duplication of subroutine names between different modules.

Security Leftovers

  • Security updates for Wednesday

    Security updates have been issued by Debian (lrzip and puma), Fedora (plantuml and plib), Oracle (kernel and kernel-container), Red Hat (firefox, kernel, kpatch-patch, subversion:1.14, and thunderbird), Scientific Linux (firefox and thunderbird), SUSE (kernel-firmware, libxml2, pcre2, and postgresql13), and Ubuntu (accountsservice, postgresql-10, postgresql-12, postgresql-13, postgresql-14, and rsyslog).

  • The Linux Foundation's "security mobilization plan" [Ed: Making up numbers for a FUD campaign led by proprietary software companies that make back doors for the NSA]

    The Linux Foundation has posted an "Open Source Software Security Mobilization Plan" that aims to address a number of perceived security problems with the expenditure of nearly $140 million over two years.

  • Our build and release infrastructure, and upcoming updates | F-Droid - Free and Open Source Android App Repository

    Behind the scenes of F-Droid is a giant pile of automation to manage the process of building thousands of apps from source. This means checking out thousands of source repos, checking them all for updates, building and new releases, and securely signing them en masse. All builds are run in a fresh virtual machine guest instance known as the buildserver. All Gradle binaries and Android SDK packages are verified against our public logs of observed SHA-256 checksums. The transparency log processes also verify against upstream’s public checksums. Our setup runs on Debian almost exclusively. Debian is a leader in free software, rock solid servers, and reproducible builds. That makes it a natural home for F-Droid. We also work to ensure we maintain the packages we use, and build our processes on top of Debian packages. That means we share the maintenance with anything that uses Debian. It may seem like more work to give back, but our experience is that it pays off in the long run. The F-Droid community is able to maintain many things with a small team. Another example of this is this website itself: it is built using Jekyll packages that are all in Debian.

  • F-Droid: Our build and release infrastructure, and upcoming updates

    Here's an update from F-Droid regarding upcoming changes to its build and distribution infrastructure.

  • Tails 5.0 Linux users warned against using it "for sensitive information" [Ed: Microsoft-connected site shedding doubt on "Linux"]

    Tails developers have warned users to stop using the portable Debian-based Linux distro until the next release if they're entering or accessing sensitive information using the bundled Tor Browser application.

  • CISA Adds 34 Known Exploited Vulnerabilities to Catalog [Ed: Lots and lots of Microsoft. Actively exploited.]

    CISA has added 34 new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise. Note: to view the newly added vulnerabilities in the catalog, click on the arrow on the of the "Date Added to Catalog" column, which will sort by descending dates.

  • Google Releases Security Updates for Chrome

    Google has released Chrome version 102.0.5005.61 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system.

  • Stable Channel Update for Desktop
  • Google has been DDoSing SourceHut for over a year

    Just now, I took a look at the HTTP logs on git.sr.ht. Of the past 100,000 HTTP requests received by git.sr.ht (representing about 2½ hours of logs), 4,774 have been requested by GoModuleProxy — 5% of all traffic. And their requests are not cheap: every one is a complete git clone. They come in bursts, so every few minutes we get a big spike from Go, along with a constant murmur of Go traffic. This has been ongoing since around the release of Go 1.16, which came with some changes to how Go uses modules. Since this release, following a gradual ramp-up in traffic as the release was rolled out to users, git.sr.ht has had a constant floor of I/O and network load for which the majority can be attributed to Go. I started to suspect that something strange was going on when our I/O alarms started going off in February 2021 (we eventually had to tune these alarms up above the floor of I/O noise generated by Go), correlated with lots of activity from a Go user agent. I was able to narrow it down with some effort, but to the credit of the Go team they did change their User-Agent to make more apparent what was going on. Ultimately, this proved to be the end of the Go team’s helpfulness in this matter.