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03/04/2024   Linux Today

In this tutorial, we will show you how to install the VNC server on CentOS 8 Server. We use TigerVNC as the VNC server and Gnome Desktop for the graphical user interface.

The post How to Install VNC Server on CentOS appeared first on Linux Today.

03/04/2024   Linux Today

This guide shows how to install Xfce on AlmaLinux 9 or 8 with a full step-by-step rundown using the command-line terminal.

The post How to Install Xfce on AlmaLinux 9 or 8 appeared first on Linux Today.

03/04/2024   Linux Today

In this guide, you will learn what file globbing is on Linux and how to use it with various commands through practical examples.

The post What Is File Globbing in Linux (How to Use It With Examples) appeared first on Linux Today.

03/04/2024   LinuxSecurity.com
Several security issues were fixed in the Linux kernel.
03/04/2024   Linux Today

Here’s a beginner’s guide to checking printer ink levels in various Linux distributions. In this tutorial, we’ll explore a few options for checking ink levels on Linux for users who wish to stay informed about their printer’s ink status.

The post How to Check Printer Ink Levels in Linux (GUI & Terminal) appeared first on Linux Today.

03/04/2024   LinuxSecurity.com
Aviv Keller discovered that the frames.html file generated by YARD, a documentation generation tool for the Ruby programming language, was vulnerable to cross-site scripting.
03/04/2024   Linux Today

Discover a step-by-step guide to installing Waydroid on Ubuntu and learn the steps to install, list, run, and uninstall Android applications.

The post How to Run Android Applications on Ubuntu with Waydroid appeared first on Linux Today.

03/04/2024   Linux Today

According to StatCounter’s data, by the end of February 2024, Linux has achieved a 4.03% desktop market share. Here’s more on that!

The post Linux Crosses 4% Market Share Worldwide appeared first on Linux Today.

03/04/2024   LinuxSecurity.com
Django could be made to consume resources or crash if it received specially crafted network traffic.
03/04/2024   Linux Today

OpenMediaVault 7 (Sandworm) has been released, featuring upgrades to Debian 12 and enhanced security features. Learn more now!

The post OpenMediaVault 7 NAS Debuts With Debian 12 Upgrade appeared first on Linux Today.

03/04/2024   LinuxSecurity.com
The following updated rpms for Oracle Linux 7 have been uploaded to the Unbreakable Linux Network:
03/04/2024   LinuxSecurity.com
The following updated rpms for Oracle Linux 6 Extended Lifecycle Support (ELS) have been uploaded to the Unbreakable Linux Network:
03/04/2024   Linux Today

As of March 1, 2024, Ente’s source code is open source! This is an exciting move for all privacy-centric photo storage enthusiasts.

The post Ente Cloud-Based Photos App Goes Fully Open Source appeared first on Linux Today.

03/04/2024   LinuxSecurity.com
Django could be made to consume resources or crash if it received specially crafted network traffic.
03/04/2024   Linux Today

Coming a month after Shotcut 24.01, the Shotcut 24.02 release is here to add support for the full-sphere surround sound format called Ambisonic in Settings > Audio Channels. Ambisonic audio is often used with 360° video and can be output as spherical or reframed to a rectangle.

The post Shotcut 24.02 Open-Source Video Editor Released With Ambisonic Audio Support appeared first on Linux Today.

03/04/2024   Linux Today

Yes, you’re reading it right. After more than three years of work by the Mutter (GNOME’s window and composite manager) developers, the variable refresh rate (VRR) support has been merged today and will be available as part of the upcoming GNOME 46 desktop environment series as an experimental feature.

The post GNOME 46 to Ship With Experimental Variable Refresh Rate (VRR) Support appeared first on Linux Today.

02/29/2024   Linux Journal
Securing Your Digital Fortress Implementing a Linux Filesystem Encryption With LUKS and eCryptfs

In the digital age, data security has become a paramount concern for individuals and organizations alike. With cyber threats evolving at an alarming rate, protecting sensitive information is not just a priority but a necessity. Linux, known for its robust security features, offers powerful tools for filesystem encryption: LUKS (Linux Unified Key Setup) and eCryptfs. These tools provide layers of security for data at rest, ensuring that confidential information remains confidential, even if it falls into the wrong hands. This article embarks on an exploration of LUKS and eCryptfs, shedding light on their mechanisms, benefits, and practical applications.

The Foundation of Filesystem Encryption

Filesystem encryption is a method of encrypting all files on a filesystem to protect data from unauthorized access. It involves converting data into a coded format that can only be accessed or decrypted with the correct key or passphrase. This security measure is critical for safeguarding sensitive data, including personal information, financial records, and confidential documents.

Encryption can be symmetric, where the same key is used for both encryption and decryption, or asymmetric, involving a pair of keys for encrypting and decrypting data. For filesystem encryption, symmetric encryption is commonly used due to its efficiency in processing large volumes of data.

Unlocking the Vault: An Introduction to LUKS

LUKS is a standard for Linux hard disk encryption. By providing a uniform and secure method to manage disk encryption keys, LUKS enables users to encrypt entire volumes, making it an ideal solution for securing data on hard drives, SSDs, or removable storage media.

Key Features of LUKS
  • Key Management: LUKS supports multiple encryption keys, allowing for flexible key management strategies.
  • Passphrase Security: Users can access the encrypted volume through passphrases, with LUKS allowing for multiple passphrases to decrypt a single volume.
  • Compatibility: LUKS is widely supported across Linux distributions, ensuring compatibility and ease of use.
How LUKS Works

LUKS operates by setting up an encrypted container on a disk volume. When a user wishes to access the data, they must provide the correct passphrase to unlock the container. LUKS encrypts the entire filesystem, including file names, directory structures, and file contents, using a symmetric encryption algorithm.

02/27/2024   Linux Journal
Crafting Cutting-Edge AI Assistants with Ubuntu

Introduction

In an era dominated by digital innovation, Artificial Intelligence (AI) assistants have emerged as pivotal elements in revolutionizing the way we interact with technology. From simplifying daily tasks to providing complex business solutions, AI assistants have become indispensable. Amidst this technological revolution, Ubuntu, known for its robustness and developer-friendly environment, stands out as a premier platform for developing these futuristic assistants. This article delves into the intricacies of designing and implementing virtual personal assistants using Ubuntu's rich ecosystem, offering a guide for developers and enthusiasts alike.

Understanding the Basics of AI Assistants

At their core, AI assistants are sophisticated software agents that can perform tasks or services for an individual based on commands or questions. The journey from simple scripted bots to advanced AI assistants capable of understanding natural language and learning from interactions reflects a significant evolution. In the contemporary digital landscape, these assistants are not just conveniences but essential tools that enhance productivity and accessibility.

Why Ubuntu for AI Assistant Development?

Ubuntu's appeal lies in its open-source nature, providing a treasure trove of resources and a supportive community for developers. Its compatibility with leading AI and machine learning libraries, such as TensorFlow and PyTorch, alongside its stability and security features, makes Ubuntu an ideal choice for AI development. Furthermore, Ubuntu's flexibility across desktop, server, and cloud environments ensures that developers can build and deploy AI assistants with ease and efficiency.

Designing an AI Assistant on Ubuntu

Identifying Purpose and Functionalities

The first step in creating an AI assistant is to clearly define its purpose. Whether it's managing schedules, assisting with web development tasks, or providing customer support, understanding the assistant's core functions is crucial. This clarity guides the design process, from the choice of technologies to the interaction models.

Design Considerations

A user-centric design is key to developing an effective AI assistant. This involves creating intuitive interaction flows and considering how the assistant will understand and respond to user inputs. The design should prioritize natural language understanding to cater to a wide range of queries and commands.

02/22/2024   Linux Journal
Unlocking High-Performance to Achieve a High Ubuntu Server Administration
Introduction

In the dynamic landscape of modern computing, the role of servers has become increasingly crucial. Whether it's hosting websites, managing databases, or running applications, servers are the backbone of digital infrastructure. Among the myriad of server operating systems available, Ubuntu Server stands out as a reliable and versatile choice. In this article, we delve into the intricacies of Ubuntu Server administration, focusing on strategies and techniques to optimize performance and ensure seamless operation.

Understanding Ubuntu Server

Ubuntu Server, a variant of the popular Ubuntu Linux distribution, is specifically designed for server environments. Renowned for its stability, security, and ease of use, Ubuntu Server provides a robust platform for hosting various services and applications. Unlike its desktop counterpart, Ubuntu Server is devoid of a graphical user interface (GUI), making it lightweight and ideal for headless installations.

Setting Up Ubuntu Server

The journey towards high-performance server administration begins with the installation and configuration of Ubuntu Server. The installation process is straightforward, guided by a user-friendly installer that facilitates customizations according to specific requirements. Once installed, initial server configurations such as network settings, user management, and security enhancements are essential steps to fortify the server against potential threats.

Essential Administrative Tasks

Effective server administration entails proficiency in fundamental tasks such as user and group management, file system manipulation, and package management. With Ubuntu's Advanced Package Tool (APT), administrators can effortlessly install, update, and remove software packages, ensuring that the server's software stack remains up-to-date and secure. Additionally, meticulous network configuration and vigilant monitoring of server performance are indispensable for maintaining optimal operation.

Advanced Server Administration Techniques

As administrators gain proficiency, they can leverage advanced techniques to streamline administrative workflows and enhance server functionality. Automation plays a pivotal role in this regard, with cron jobs enabling the scheduling of recurring tasks and scripts. Furthermore, remote administration capabilities facilitated by Secure Shell (SSH) empower administrators to manage servers from anywhere, fostering flexibility and efficiency in server management.

02/20/2024   Linux Journal
Maximizing Network Monitoring Efficiency Creating Netstat Aliases

In today's interconnected digital landscape, monitoring network activity is paramount for ensuring the security and efficiency of computer systems. Whether you're a system administrator, network engineer, or an IT enthusiast, having insights into network connections and traffic can help identify potential threats, troubleshoot issues, and optimize performance. One of the go-to tools for monitoring network activity is netstat, a command-line utility available on most operating systems. While netstat offers powerful capabilities, its usage can be cumbersome and time-consuming, especially when dealing with complex network environments. In this article, we'll explore how to harness the full potential of netstat by creating aliases, allowing you to streamline your network monitoring efforts and focus on what matters most.

Understanding Netstat

Before diving into aliases, let's first understand what netstat is and how it works. Netstat, short for "network statistics," is a command-line tool used to display network connections, routing tables, interface statistics, and other network-related information. It provides valuable insights into active connections, listening ports, and network protocols in use. By default, netstat displays a comprehensive list of network statistics, which can be overwhelming, especially in large-scale environments.

The Need for Aliases

While netstat is a powerful tool, its usability can be hindered by lengthy commands and complex syntax. This is where aliases come into play. Aliases allow you to create shortcuts for commonly used netstat commands, making them easier to remember and quicker to execute. By defining aliases, you can simplify complex queries, customize output formats, and focus on specific aspects of network activity. Whether you're monitoring incoming connections, outgoing traffic, or network latency, aliases can help tailor netstat to your specific needs.

Creating Netstat Aliases

Now that we understand the importance of aliases let's delve into how to create them. The process of creating netstat aliases may vary depending on your operating system, but the underlying principles remain the same. Here, we'll focus on creating aliases in Unix-like systems, such as Linux and macOS, using the bash shell.

  1. Choosing Suitable Aliases: Start by identifying the netstat commands you use frequently. These could include commands to display active connections, listening ports, or network interface statistics.

  2. Setting Up Aliases: Once you've identified your commonly used commands, it's time to create aliases for them. Open your shell configuration file (e.g., .bashrc, .bash_profile) using a text editor, and add your aliases using the following syntax:

    alias alias_name='netstat_command'

    For example:

    alias conn='netstat -an | grep ESTABLISHED'

02/15/2024   Linux Journal
ZFS on Linux: Unlocking Advanced File System and Volume Management

Introduction

In the realm of modern data management, few technologies hold as much promise and versatility as the ZFS file system. Originally developed by Sun Microsystems for their Solaris operating system, ZFS has gained widespread acclaim for its advanced features, robustness, and data integrity mechanisms. While ZFS was initially exclusive to Solaris and other Unix-like operating systems, its integration with Linux has opened up a world of possibilities for system administrators and enthusiasts alike.

This article delves into the intricate workings of ZFS on Linux, exploring its advanced file system and volume management capabilities. Whether you're a seasoned sysadmin looking to optimize your storage infrastructure or an adventurous user seeking to harness the power of ZFS for personal projects, this guide will equip you with the knowledge needed to master ZFS on Linux.

Understanding ZFS

At its core, ZFS is a next-generation file system designed to address the shortcomings of traditional filesystems while introducing a plethora of innovative features. One of the defining characteristics of ZFS is its unique approach to storage management through the use of storage pools. Unlike traditional file systems that rely on individual partitions or volumes, ZFS aggregates multiple storage devices into a single pool, allowing for dynamic allocation and management of storage resources.

Within a ZFS pool, data is organized into datasets, which serve as logical containers for files and directories. Datasets can be hierarchically structured, enabling administrators to create a flexible and scalable storage environment tailored to their specific needs. This hierarchical organization facilitates efficient data management and simplifies tasks such as backup, replication, and data migration.

Advanced Features of ZFS

One of the most compelling features of ZFS is its unparalleled data integrity and protection mechanisms. ZFS employs checksums to detect and mitigate data corruption, ensuring that stored data remains intact and reliable even in the face of hardware failures or silent data corruption. Additionally, ZFS utilizes a copy-on-write transactional model, which guarantees atomicity and consistency when writing data to disk, thereby minimizing the risk of data corruption and ensuring data integrity.

Another notable feature of ZFS is its support for snapshots and clones, which enable users to capture point-in-time copies of datasets for backup, replication, or experimentation purposes. Snapshots provide a read-only view of the dataset at a specific moment in time, allowing users to revert to previous states or extract specific versions of files without impacting the original data. Clones, on the other hand, allow users to create writable copies of snapshots, enabling rapid provisioning of new environments or testing scenarios.

02/13/2024   Linux Journal
Choosing the Right Text Editor for Linux: Vim vs. Nano

Introduction

In the vast realm of Linux, where flexibility and customization reign supreme, the choice of a text editor can significantly impact productivity and workflow efficiency. Among the plethora of options available, two stalwarts stand out: Vim and Nano. In this article, we delve into the intricacies of these text editors, exploring their features, strengths, weaknesses, and ultimately aiding you in making an informed decision tailored to your specific needs.

Understanding Vim

Vim, short for Vi IMproved, traces its roots back to the venerable Vi editor, a staple in the Unix ecosystem. Renowned for its modal editing paradigm, Vim offers a unique approach to text manipulation, distinguishing between command, insert, visual, and other modes. This modularity empowers users with lightning-fast navigation and editing capabilities, making it a favorite among seasoned Linux enthusiasts.

Key to Vim's allure is its unparalleled customizability. From tweaking key bindings to crafting intricate plugins, Vim fosters an environment where users can tailor the editor to suit their exact requirements. The vibrant plugin ecosystem further enhances Vim's functionality, offering a myriad of extensions for tasks ranging from version control integration to language-specific syntax highlighting.

However, Vim's steep learning curve often serves as a barrier to entry for newcomers. Mastering the myriad of commands and shortcuts demands dedication and practice, requiring users to invest time upfront to unlock Vim's full potential. Additionally, configuring Vim to align with personal preferences can be daunting, necessitating a degree of technical proficiency.

Exploring Nano

In stark contrast to Vim's complexity, Nano presents itself as a minimalist alternative, prioritizing simplicity and ease of use. Designed with beginners in mind, Nano offers a straightforward interface reminiscent of traditional text editors, making it an ideal choice for those transitioning from graphical environments.

Despite its simplicity, Nano doesn't compromise on functionality. Basic editing tasks such as text insertion, deletion, and navigation are intuitive and accessible, allowing users to dive straight into editing without grappling with a steep learning curve. Moreover, Nano's lightweight nature ensures swift performance even on resource-constrained systems.

However, Nano's simplicity comes at a cost. Unlike Vim, which boasts a vast array of customization options, Nano offers limited extensibility, leaving power users craving for more advanced features. Additionally, its lack of modal editing can be a drawback for those accustomed to Vim's efficient editing workflow.

02/08/2024   Linux Journal
Achieving High Availability and Efficient Load Balancing with HAProxy on Ubuntu Server

In the dynamic landscape of digital services, ensuring continuous availability and optimal performance of web applications is paramount. Ubuntu Server, known for its robustness and flexibility, serves as a solid foundation for deploying web services that demand high reliability. This article delves into the intricacies of configuring Ubuntu Server with HAProxy—a renowned open-source solution—to achieve high availability and efficient load balancing, ensuring your services remain uninterrupted and responsive under varying loads.

Understanding High Availability and Load Balancing

High Availability (HA) refers to the design and implementation of systems that are operational and accessible without significant downtime. HA systems are engineered to overcome failures automatically, minimizing the impact on services. The essence of HA lies in redundancy and failover strategies, ensuring that if one component fails, another can take over seamlessly.

Load Balancing plays a critical role in HA by distributing incoming network traffic across multiple servers. This not only maximizes throughput and reduces response times but also ensures no single server bears too much load, which could potentially lead to failure. Load balancers can employ various algorithms to distribute traffic, including Round Robin, Least Connections, and Source IP hash, each with its own set of advantages for different scenarios.

HAProxy stands out as a powerful tool for enabling HA and load balancing. It can process millions of requests per second, providing users with the speed and reliability needed for their applications.

Preparing for HAProxy Installation

Before diving into the installation process, it's crucial to outline the hardware and software prerequisites and understand the network architecture. An optimal setup includes at least two Ubuntu Servers to act as the backend servers and one Ubuntu Server to host HAProxy for load balancing. Ensure all servers are updated and secured.

Installing HAProxy on Ubuntu Server

To install HAProxy:

  1. Update your system: Ensure your Ubuntu Server is up-to-date with the latest packages by running:

    sudo apt update && sudo apt upgrade -y

  2. Install HAProxy: Install HAProxy using Ubuntu’s package manager:

    sudo apt install haproxy -y

  3. Enable HAProxy: To ensure HAProxy starts with your system, enable it through systemd:

    sudo systemctl enable haproxy

02/06/2024   Linux Journal
Essential Keyboard Shortcuts and Time-Saving Tips for Linux Productivity

Linux stands as a beacon of efficiency and flexibility in the world of operating systems, especially favored by developers, system administrators, and power users for its robustness and open-source nature. One of the keys to unlocking the full potential of Linux lies in mastering its keyboard shortcuts and employing time-saving tips that significantly enhance productivity. This guide will navigate through the essential shortcuts and tips across various Linux desktop environments (DEs), delve into the command line's power, and share advanced techniques for power users.

Understanding the Linux Desktop Environment

Linux offers a variety of desktop environments (DEs), each with its unique design, functionality, and set of keyboard shortcuts. Popular DEs include GNOME, KDE Plasma, and XFCE, among others. These environments allow users to interact with the system and applications more efficiently. However, the diversity in DEs means that shortcuts may vary, emphasizing the importance of customizability and adaptation to one's workflow.

Essential Linux Keyboard Shortcuts

General System Shortcuts

Switching between virtual desktops: Most DEs support multiple workspaces, enabling users to organize their applications and windows. Switching between these can usually be done with shortcuts like Ctrl + Alt + Arrow keys or Ctrl + Alt + [Number], offering a swift navigation method.

Opening a terminal: The terminal is the gateway to Linux's power. Quickly opening a terminal can be achieved with Ctrl + Alt + T in many DEs, providing instant access to the command line.

System search: Initiating a system-wide search for files, applications, and settings is often possible with Super (Windows key) + S or Super + Space, enabling users to quickly locate and launch what they need.