Linux Bash

In the fast-paced world of software development, deploying updates and new features is crucial for keeping applications relevant and responsive to user needs. However, each deployment carries the risk of introducing bugs or issues that could affect user experience or system stability. To mitigate these risks, development teams increasingly rely on strategies like canary deployments. In this post, we’ll explore how you can implement canary deployments using Bash scripting on Linux systems to ensure smooth, controlled rollouts.

If you're on the lookout for a lightweight file manager that combines ease of use with the power of a graphical user interface (GUI), then qtfm might just be what you need. Designed for users who prefer speed and simplicity, qtfm leverages the versatility of Linux with the traditional graphical approach to file management. In this article, we’ll dive into what makes qtfm stand out and provide step-by-step installation instructions across different Linux distributions using apt, dnf, and zypper. qtfm is a file manager that adheres to the Keep It Simple Stupid (KISS) principle.

Linux, an emblem of flexibility and choice, offers a plethora of distributions (distros) tailored for various environments and users. From the desktop-friendly Ubuntu to the robust enterprise-centric Red Hat Enterprise Linux, each distribution tweaks and configures system settings differently to best suit its target audience. One critical aspect that often varies across these distros is system login configuration, a fundamental area for administrators and users alike. This article delves into how popular Linux distributions manage system login configurations, highlighting their similarities and differences. System login configurations involve settings and mechanisms that control user access to a Linux system.

When managing a Linux system, it's essential to have a grasp of your disk drives and their respective partitions – not just for regular maintenance, but also for performing tasks like troubleshooting, system monitoring, or even when planning upgrades. One of the simplest and most effective tools for this purpose is the lsblk command, which stands for "list block devices." lsblk is a utility in Linux used to display information about all available or the specified block devices. It reads the sysfs filesystem and udev db to gather information. Block devices, in Linux terms, are storage devices that can be used for storing data, such as hard drives, solid state drives, and USB drives.

If you're a fan of the VI editor, a staple in the Unix-based system editing tools, and often find yourself wishing for a file management version for complex filesystem tasks, vifm might just be what you're looking for. This powerful file manager mimics the VI editor’s keyboard shortcuts, mode-based editing, and overall philosophy, offering a familiar and efficient experience for power users who prefer using the keyboard over the mouse. What is vifm? vifm is a console file manager with two panels, making it a perfect fit for those who thrive in a command-line environment but require a structured view of their files and directories. Its VI-like usage means you can use familiar commands and even configure it through a .

Deploying updates to a live production environment without causing service interruptions is a critical capability for many businesses today. Zero-downtime deployment, or seamless deployment, ensures that users continue to have access to the application even as new software versions are released. For system administrators and developers working in Linux environments, understanding how to execute these deployments effectively using Bash can save both time and headaches. Zero-downtime deployment refers to the process of updating software without taking the system offline or showing any disruption to the user experience.

In the landscape of cybersecurity, Multi-Factor Authentication (MFA) has emerged as a critical layer of defense, protecting user data from unauthorized access. MFA, by requiring multiple forms of verification before granting access to an account or system, significantly reduces the risk of intrusion. Linux, known for its robustness and security in server environments, offers various ways to implement MFA. These can differ significantly in terms of setup processes and technologies used. In this article, we delve into the different setups for MFA on Linux systems, helping you choose the right configuration for your needs. Google Authenticator Google Authenticator is a popular choice for adding MFA to a Linux system.

In the vast toolbox of Linux file managers, each comes with its unique set of features and utilities. The battle for efficiency and minimalism, however, brings us to a noteworthy contender, nnn. Renowned for its lightning speed and minimal resource usage, nnn outshines when managing files on low-resource systems or for users aiming to maximise their productivity in terminal environments. nnn is a terminal-based file manager that stands for 'Noice is Not Noice,' a recursive acronym to highlight its commitment to enhancing the user experience. Being exceptionally fast and having a low memory footprint, nnn is ideal for users who prefer working within a command-line interface.

When it comes to web hosting, security is paramount. In a digital era prone to cyber threats, even the slightest vulnerability can expose sensitive data to malicious actors or lead to severe service disruptions. That’s where CloudLinux comes in - a powerhouse Linux distribution designed specifically for shared hosting environments. In this blog, we'll delve into the unique security tools offered by CloudLinux that set it apart and make it a preferred choice for web hosting security. One of the standout features of CloudLinux is CageFS - a virtualized file system that encapsulates each user in its own isolated environment. This isolation prevents users from seeing each other and viewing sensitive information.

In today's hyper-competitive software development environment, the need for speed and reliability in deploying applications cannot be overstated. Businesses require systems that not only facilitate speedy development and deployment but also ensure that updates are delivered seamlessly and errors are minimised. This is where Continuous Integration (Continuous Deployment (CI/CD) and Linux Bash scripting come into play, forming a powerful duo that can significantly streamline deployment processes. Continuous Integration (CI) is a development practice where developers integrate code into a shared repository frequently, preferably several times a day. Each integration can then be verified by an automated build and automated tests.

Understanding how disk space is being used is crucial for managing system resources effectively. Whether you're a system administrator, a software developer, or just a curious power user, knowing how to deftly handle disk-related commands in Linux can greatly enhance your productivity and safeguard your systems from potential storage-related issues. Today, let's dive into two powerful tools that every Linux user should be familiar with: df and du. The df command, short for "disk filesystem", is utilized to display information related to disk space usage of file systems. It’s incredibly useful for getting a quick snapshot of available and used disk space on different partitions and mounted filesystems.

Linux is incredibly robust in its ability to manage multiple users, making it a powerful operating system for servers and systems where you may have multiple people working on the same machine. In non-GUI (Graphical User Interface) distributions, user management is handled entirely through the terminal. This might sound daunting if you're not familiar with command-line interfaces, but it’s actually quite straightforward once you get the hang of it. Managing users in a command-line environment allows for enhanced control and automation opportunities. It's also a fundamental skill for system administrators, as it directly impacts system security and resource management.

In the dynamic world of software development, the efficiency of the development process is just as crucial as the quality of the product being developed. DevOps, a set of practices that automates and integrates the processes between software development and IT teams, ensures they can build, test, and release software faster and more reliably. At the heart of DevOps is the toolchain, a suite of tools designed to enable these efficient workflows. In this article, we'll delve into a subset of those tools, focusing on those related to Linux Bash that are critical for every developer in the DevOps landscape. Git is an indispensable tool for source code management.

Linux operating systems have a powerful method for managing file systems called mount points. Whether you are a beginner or an experienced user, understanding how mount points function can be incredibly useful for managing devices, accessing network resources, dynamic disk partitions, and external storage. In this blog post, let's delve into what mount points are, how they work, and why they are essential in Linux environments. In Linux, a mount point is a directory (typically an empty folder) in the file system where you can 'mount' a storage device such as a hard drive, SSD, USB drive, or even a network share. Upon mounting, this directory becomes the root of the device's file system.

In the realm of command-line tools, the quest for efficiency and simplicity never ends. Among the stars of the show is lf (list files), a lightweight and fast terminal file manager inspired by ranger but streamlined for better performance. lf isn't just minimalistic in design; it's also packed with features that make file management a breeze for keyboard warriors and terminal aficionados. Speed: Written in Go, lf is known for its fast performance, making it excellent for managing large directories. Single Binary: Unlike other file managers that depend on external libraries, lf runs as a single binary, simplifying its installation and use.

When managing files on a Linux system, ensuring proper security and accessibility measures for different users is paramount. The Access Control List (ACL) provides a more nuanced approach to permissions, extending beyond the traditional owner/group/others model. Here, we will explore how ACL is set up in Linux and discuss the key differences in its implementation. An Access Control List (ACL) offers a more flexible permission framework on Linux systems. It allows system administrators to specify more detailed user access rights to files and directories than the general permission system allows. ACLs are particularly useful in an environment where multiple users require different levels of access to the resources.

When navigating the complex directory structures in Linux, traditional command-line tools like ls and tree often leave us desiring more interactive and efficient methods to manage our files. That's where broot comes into the picture—a modern, feature-rich tool designed to enhance file browsing and manipulation in a way that’s both intuitive and powerful. broot is a command-line based file exploration tool that allows users to interact with directory trees using a keyboard-focused approach. Its main draw is the ability to provide a tree overview of directories that is searchable and zoomable in real time, making the process of navigating and managing files significantly faster.

Introduction to Cloud-Native Development In the dynamic world of software development, "cloud-native" has emerged as a paradigm that advocates creating applications explicitly designed to thrive in the cloud environment. This approach leverages the flexibility, scalability, and resilience offered by modern cloud platforms. Technologies such as containers, microservices, serverless functions, and immutable infrastructure are fundamental to this model. Understanding DevOps in the Cloud-Native Context DevOps isn’t just a set of practices but a culture that merges development (Dev) and operations (Ops) teams to enhance collaboration and productivity.

In the vast expanse of Linux, mastering how to efficiently manage and reference filesystems is crucial for any system administrator, developer or Linux enthusiast. Two key concepts that play a vital role in this are filesystem labels and UUIDs (Universally Unique Identifiers). Both offer alternative methods to the traditional practice of using device names like /dev/sda1. In this article, we will delve into what filesystem labels and UUIDs are, why they are used, and how you can work with them to streamline your system management. Filesystem Labels: A filesystem label is a human-readable name associated with a filesystem, which can be used to reference the filesystem.

In the constantly evolving landscape of software development, the integration of security into the DevOps process has become an essential strategy for organizations aiming to develop secure, high-quality software efficiently. This approach, commonly known as DevSecOps, emphasizes the inclusion of security measures from the outset of development, fostering a culture where security and operations teams work collaboratively. One of the powerful tools helping bridge these roles, especially in environments reliant on Linux, is Bash scripting. DevSecOps extends the DevOps philosophy, which integrates software development (Dev) and IT operations (Ops), by including security (Sec) as a core component throughout the application lifecycle.

Understanding file permission defaults is crucial for system security and functionality, particularly when you're running a Linux distribution. Today, we will dive into the nuanced world of file permissions in two popular distributions: Debian and AlmaLinux. These two embody different aspects of the Linux ecosystem, with Debian being one of the oldest and most influential distributions, while AlmaLinux stands as a newer, community-driven fork of CentOS. Let's explore how these systems handle file permissions by default and what that means for users and administrators. Before comparing Debian and AlmaLinux, it's important to understand the basics of Linux file permissions.

If you've ever immersed yourself in the world of Linux, you’ve likely encountered the need for an efficient file management tool. Midnight Commander, or mc for short, is a powerhouse in this realm that often goes unnoticed by new users but is cherished by those who seek a nostalgic yet functional approach to managing files. Today, we’ll discover why Midnight Commander remains relevant in modern Linux distributions and how you can install and use it to enhance your file management experience. Midnight Commander is a text-based, two-pane file manager developed originally in the early 1990s.

In the landscape of a Linux filesystem, directories serve as more than just folders. They are pivotal components that structure data and maintain order. Among these directories, /mnt and /media play crucial roles when it comes to managing devices and storage media. This blog post will delve into what these directories are, how they differ, and their significance in the Linux environment. Before we dive into the specifics of /mnt and /media, it’s essential to understand the concept of mount points in Linux. A mount point is simply a directory where additional filesystems can be attached. When a filesystem is "mounted" to a mount point, the contents of that filesystem become accessible through the path of the mount point.

Optimizing DevOps with Bash: Key Performance Indicators (KPIs) You Need to Know In the dynamic field of DevOps, efficiency and continuous improvement are not just goals; they are necessities for survival and competitive advantage. Command-line enthusiasts and scripting pros leveraging Linux Bash have a pivotal role in optimizing various DevOps processes. Here, we dive into the critical Key Performance Indicators (KPIs) that can help you gauge the health, efficiency, and success of DevOps initiatives while utilizing the power of Linux Bash scripts. What Is It? Deployment Frequency is a metric that indicates how often new releases and updates are pushed to production or staging. It serves as a measure of a team's agility and efficiency.

For Linux enthusiasts and terminal wizards, navigating files in a console environment is second nature. However, even the most experienced users seek efficiency and comfort in their daily computing tasks. That's where ranger, a console-based file manager with VI key bindings, becomes an indispensable tool in your Linux toolkit. In this article, we'll dive into what makes ranger a unique file manager, how you can install it across various Linux distributions, and some basic usage tips to get you started. Ranger is a lightweight, powerful file manager that operates in the terminal. Unlike traditional graphical file managers, ranger provides a minimalistic yet feature-rich interface, influenced heavily by Vim, the well-known text editor.