UbuntuHandbook

Install & Setup Veyon Classroom Management App in Ubuntu 24.04 | 22.04

Last updated: February 19, 2025 — 2 Comments

This tutorial shows how to install and setup Veyon for classroom management in Ubuntu 24.04, Ubuntu 22.04, Ubuntu 20.04, and Debian 12, though it should also works in Windows 10 & 11.

Veyon is a free and open-source software for monitoring and controlling computers across multiple platforms. It supports monitoring all computers in one or multiple classrooms, view or control computers, and broadcast the teacher’s (or student’s) screen in real-time.

Besides the basic monitor, control, screen sharing features, the program also can do:

Lock student computers screen.
Power on/off, reboot student computers.
Send message, start app, open website, take screenshot, and transfer files to student computers.

In Howtos classroom management tool

GNOME 46 Released! New Global Search, Remote Login, and More

Last updated: March 21, 2024 — Leave a comment

GNOME, the popular Linux desktop environment, announced new 46 stable release this Wednesday!

The new GNOME 46, code-name“Kathmandu”, will be default desktop for Ubuntu 24.04 and Fedora 40 planned for next month, and optional for Arch, Manjaro, etc.

The Files, aka Nautilus, in the release features new global search, that can be triggered either by Ctrl+Shift+F or top-left search icon. It supports searching multiple locations simultaneously, including locations outside user home. Other changes for ‘Files’ include:
Continue Reading…

In News Gnome

Oracle Announced the General Availability of Java JDK 22

Last updated: March 20, 2024 — Leave a comment

Oracle announced the release of JDK 22 GA this Tuesday.

“JDK 22 delivers 12 enhancements that are significant enough to warrant their own JDK Enhancement Proposals (JEPs), including seven preview features and one incubator feature. They cover improvements to the Java Language, its APIs, its performance, and the tools included in the JDK.”
Continue Reading…

In News java, programming

Firefox 124.0 Released! Caret Browsing in PDF Viewer & Qwant to All Languages in France

Last updated: March 20, 2024 — Leave a comment

Mozilla announced a new monthly release of its Firefox web browser on March 19.

In the new release, the caret browsing mode, keyboard navigating just like in text editor, also works in the built-in PDF viewer.

The Qwant search engine has been expanded to all languages in the France region along with Belgium, Italy, Netherlands, Spain, and Switzerland.

In MacOS, Firefox now uses the macOS fullscreen API for better user experience for fullscreen spaces, menubar and the Dock. In Windows, it populates the taskbar jump list more efficiently, for a smoother overall browsing experience.

Firefox Caret Browsing setting option

In News Firefox, web

Ubuntu 24.04 Default Wallpaper Revealed [Download Link]

Last updated: March 20, 2024 — Leave a comment

The default wallpaper for Ubuntu 24.04 LTS, Noble Numbat, was finally released this Tuesday!

Similar to the one for current Ubuntu 22.04 LTS, the new wallpaper uses gradient color background (from purple in top-left to orange in bottom right?) with mascot in center.

I can’t say how it looks! Just see the image below for the new wallpaper:

In News ubuntu 24.04

Disable USB System or Certain Ports in Ubuntu 24.04 | 22.04

Last updated: August 23, 2024 — Leave a comment

This tutorial shows how to disable USB, either the full sub-system or for certain USB ports, in Ubuntu 24.04 or Ubuntu 22.04.

For server or production machines, disable USB can be useful for data privacy, virus protection, and other security reasons. For Ubuntu and most other Linux, here I’m going to show you how to disable USB via 3 ways:

Disable whole USB sub-system
Disable USB storage only – Only disable access for USB flash drive and other storage devices.
Disable specific USB port

In Howtos security

Here are 8 Winner Wallpaper Images for Ubuntu 24.04

Last updated: March 19, 2024 — Leave a comment

For Ubuntu 24.04 LTS, the top 8 photo images that won the wallpaper competition are out! They will be shipped by default in the .iso image as optional wallpapers for Ubuntu 24.04 Desktop.

Ubuntu Desktop team started the wallpaper competition for Ubuntu 24.04 on Feb 8. The submissions are grouped into 4 categories, including Mascot Theme, Digital / Abstract Art, Nature, Other. Each category has 2 winners and they are:

NOTE: The images here are optimized for faster loading. For original images, please scroll down and go to the competition web page.

Mascot Category:
Fuwafuwa Nanbatto-san (Dark/Light Variants)

Continue Reading…

In News ubuntu 24.04

How to Install 7-Zip (Command & GUI) in Ubuntu 22.04 & 24.04

Last updated: March 18, 2024 — 1 Comment

This simple tutorial shows how to install 7-Zip file archiver in Ubuntu Desktop.

7-Zip is a popular free open-source file archiver with a high compression ratio. Ubuntu Linux can get it in few different packages:

p7zip – a command line port of 7-Zip for POSIX systems, including Linux, when 7-Zip was Windows-only. Discontinued since 2016, but still popular and working good.
p7zip-desktop – fork of p7zip with a graphical interface.
7zip – 7-Zip for Linux, command line version.

NOTE: If you just want to do compress and/or extract .7z files, then Ubuntu supports the feature out-of-the-box with the Nautilus file manager.

Option 1: p7zip-desktop (GUI)

In Howtos p7zip

QMPlay2 Released 24.03.16 with Vulkan Video Decoding Support

Last updated: March 18, 2024 — Leave a comment

QMPlay2, the free open-source Qt media player, released version 24.03.16 few days ago.

QMPlay2 is a Qt based media player that uses FFmpeg as backend for most video and audio codecs support. It also supports Audio CD, raw files, Rayman 2 music and chiptunes, as well as ALSA, PulseAudio or PipeWire sound servers. And, it has built-in a browser to search & play YouTube videos.

The most recent 24.03.16 release added better support for FFmpeg 6.1, and experimental Vulkan Video decoder support. So, since this release, the media player now supports hardware accelerated video playback through following APIs:

Vulkan Video (needs FFmpeg 6.1).
CUVID (NVIDIA only)
DXVA2 (Windows Vista and higher)
D3D11VA (Vulkan, Windows 8 and higher)
VDPAU/VA-API (X11 for VDPAU, Linux/BSD only)
VideoToolBox (macOS only).

QMPlay2 YouTube browser

In News media player

GNU Octave 9.1.0 Released! How to Install it in Ubuntu

Last updated: March 17, 2024 — Leave a comment

GNU Octave, the free open-source application for numerical computations, released new major 9.1.0 version! Here’s how to install it in Ubuntu 20.04, Ubuntu 22.04, Ubuntu 23.10, and Ubuntu 24.04.

The GNU website has not yet announced the new release, but it’s available in the download page.

According to the changelog, the new Octave 9.1.0 overhauled dec2base, dec2bin, and dec2hex. They now accept negative inputs and fractional inputs.

It re-architected the inputParser function to get a 60% performance improvement. And, the perms function has been made faster. The audiowrite function now supports writing to MPEG audio formats (including MP3) if the sndfile library supports it. The current directory of oruntests now changes to the directory containing the files with the tests for the duration of the test.

The release features new functions, including isenv, ismembertol, isuniform, tensorprod.

The disable_diagonal_matrix, disable_permutation_matrix, and disable_range functions have been removed! Replacements are optimize_diagonal_matrix, optimize_permutation_matrix, and optimize_range

Operators, such as .+, .+=, **, and .**= are removed. Replacements are +, +=, +=, ^, and .^=. And, following function are obsolete: