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As a system administrator, you are probably spending quite some time configuring permissions for user and groups on your system. File permissions are already quite handy in order to give read, write or execute permissions to directories or files. This is exactly what access control lists, also shortened ACL, are solving on a Linux system. In today’s tutorial, we are taking a very close look at access control lists, what they are and how they are used in order to configure a Linux system properly.

NodeBB is a Node.js based forum software built for the modern web which uses MongoDB or Redis as the database system. In this tutorial, we describe the NodeBBB installation process on the FreeBSD 12 using Nginx as the reverse proxy, MongoDB as the database, and acme.sh and Let's Encrypt for HTTPS.

On Kickstarter: Sequent Microsystems has launched a $15 “Hardware Watchdog HAT & Power Manager for Raspberry Pi” for protecting against software lock-ups.

The open-spec BeagleBone AI has arrived for $118 with a dual Cortex-A15 TI AM5729 with dual C66x DSPs and 4x EVE cores for AI. The SBC supplies 1GB RAM, 16GB eMMC, WiFi/BT, GbE, USB 3.0 Type-C, and micro-HDMI. The long-awaited heir to the BeagleBone Black that was unveiled by the BeagleBoard.org Foundation in February has […]

How to rotate videos using FFMpeg from commandline on Linux operating systems.

In this article, I am going to focus on different ways of starting, stopping and restarting the services in Debian version 10.

Up to its 18.04LTS release, it indeed worked as expected, but starting with 18.10 where the development team switched to using the Qt-based desktop LXQt instead of traditional LXDE, things started to break.

A review of an Android ad blocker

Although the consensus seems to be that it was time for the founder of the GNU project and the Free Software movement to step down, we shouldn't forget his many contributions aimed at keeping tech free.

‘Stealing Ur Feelings‘ uses dark humor to expose how Snapchat, Instagram, and Facebook can use AI to profit off users’ faces and emotions   An augmented reality film revealing how …

Capacity planning is the "black box" of Linux system administration. Here are five things you need to do to get started.

Renowned Linux kernel developer Greg Kroah-Hartman announced over the weekend that the latest Linux 5.3 kernel series is now marked as stable and ready for mass deployments.

Feng Office is a commercial open-source web-based collaboration platform written in PHP. For the purposes of this tutorial, we will install Feng Onsite, which is a self-hosted Feng Office solution. The install process shouldn’t take longer than 10 minutes, so you’ll be ready to go with Feng Office right away. Let’s begin installing Feng Office. In this tutorial, we will show you how to install Feng Office on a CentOS 7 VPS.

Ulauncher, a fast application launcher for Linux, was updated to version 5.3.0. This is the first Ulauncher stable release to support Python 3, while Python 2 was completely dropped.

Richard Stallman (RMS) is down but not out; if we pick up the pieces and chronicle the media campaign that led to his resignation we find a leaker to the media who chose a dishonest site funded by a close friend of Bill Gates

2DayGeek: The Find command is one of the most useful commands that allows users to find recently modified files and folders on Linux.

In a recent article, I introduced the chown command, which is used for modifying ownership of files on systems. Recall that ownership is the combination of the user and group assigned to an object. The chgrp and newgrp commands provide additional help for managing files that need to maintain group ownership. read more

SSH, for Secure Shell, is a network protocol that is used in order to operate remote logins to distant machines within a local network or over Internet. SSH architectures typically includes a SSH server that is used by SSH clients to connect to the remote machine.

In this tutorial, we are going to see how you can install and enable SSH, via OpenSSH, on a Debian 10 distributions.

For anyone spending time at the CLI, they’ll rely on the shell prompt. My favorite shell is Bash. By default, the configuration for Bash on popular distributions identifies the user name, hostname, and the current working directory. All essential information. But with Liquid Prompt you can display additional information such as battery status, CPU temperature, and much more.

Data science is an exciting new field in computing that's built around analyzing, visualizing, correlating, and interpreting the boundless amounts of information our computers are collecting about the world. Of course, calling it a "new" field is a little disingenuous because the discipline is a derivative of statistics, data analysis, and plain old obsessive scientific observation. read more