Linux

A concise review and reference for tldr, a community-driven alternative to traditional man pages that focuses on practical command examples.

Learn reliable methods to upload ISO files to Proxmox VE servers when the web GUI upload gets stuck, using SCP or WinSCP.

Summary of a Splunk Universal Forwarder installation failure, including symptoms, root cause, and resolution.

Learn how to determine when a RHEL 10 system was initially installed or configured using audit-friendly forensic indicators.

Learn how to configure macOS so typing just a hostname automatically opens an SSH session with proper agent forwarding and security controls.

Learn why 'git pull' can clutter your commit history and how using 'git pull --rebase' keeps your repository clean and maintainable.

When working with security-focused systems, especially those protected by fapolicyd, it's essential to understand the implications of how trust is assigned to executable files.

Edubuntu has returned with the 24.04 LTS release, offering a modern, stable, and purpose-built Linux distribution tailored specifically for educational environments.

Nextcloud is a powerful self-hosted collaboration suite—but by default, it lacks the ability to edit Office documents like Word, Excel, or PowerPoint directly in the browser.

Getting a TP-Link USB Wi-Fi adapter working on Ubuntu 24.04 LTS isn't always as plug-and-play as you’d hope.

mktemp safely creates unique and secure temoprary files and directories.

Centralized logging using Rsyslog is one of the most efficient ways to achieve logging.

One of the most important files for tailoring your environment is the `.bashrc` file.

Thankfully, there’s a way to enhance your command line interface so you always know which Git branch you’re on—without running `git status` every few minutes.

To effectively diagnose and resolve these issues, a tool that can illuminate the path resolution process is indispensable. That tool is `namei`.

Snap has its share of drawbacks, leading to an ongoing debate about whether it truly improves the Linux ecosystem or introduces unnecessary complexity.

Splunk is a powerful platform for collecting, indexing, and analyzing log data. A crucial component of Splunk’s architecture is the Splunk Universal Forwarder (UF).

Let's dive into this important concept by taking a look at what they are and how they interact with Linux file system permissions.

Troubleshooting high availability issues with pfSense firewalls.

The `ausearch` command is a powerful tool for querying and analyzing audit logs in Linux systems.

Both `apt` and `apt-get` are powerful tools for managing software packages on Debian-based systems.

The `virsh` command is a powerful utility for managing virtual machines (VMs) in Linux-based environments.

Cygwin is a powerful tool that provides a Unix-like environment and command-line interface for Windows, bridging compatibility between Linux applications and Windows OS.

When it comes to security, one of the most critical tasks is generating strong, unpredictable passwords.

SSH and bash together can create some powerful tools. We will streamline a great process in this blog post.

Configuring KVStore properly is crucial for smooth operations.

Traditional file permissions (read, write, execute) may not always provide the fine-grained access control you need, especially in shared environments.

Port redirection is a powerful tool for managing network traffic.

The ability to create custom commands allows you to streamline your workflow by automating repetitive tasks or creating shortcuts for complex commands.

When it comes to securing SSH access on a Linux system, two effective methods are disabling password authentication and locking user accounts.

The `screen` command in Linux is a terminal multiplexer that allows you to manage multiple terminal sessions from a single window.

The `locate` command in Linux is a fast and efficient utility used to find the location of files and directories on the system.

The `last` command in Linux is a simple yet powerful tool used to display the login history of users on a system.

Network Information Service (NIS), originally known as Yellow Pages (YP), is a client-server directory service protocol for distributing system configuration data such as user and host names between computers on a network.

Using Vi to replace words in a file is a quick and powerful way to edit text in Linux.

When managing a Linux system, especially as an administrator, you often need to switch user accounts to perform tasks with different permissions.

Changing the default location of the AuthorizedKeysFile can significantly enhance the security of your SSH setup by making it more difficult for attackers to locate and manipulate the file.

Keeping track of user login activities on your Red Hat Enterprise Linux (RHEL) server is essential for maintaining security and accountability.

Proper configuration of `sudo` access is crucial for system security and administration.

If you're spending a lot of time in the terminal and haven't yet explored the wonders of tmux, you're missing out. If you're not already using Team UX (tmux), it's time to start.

We'll walk you through the process of setting up two-factor authentication using Google Authenticator and Pluggable Authentication Modules (PAM) in SSH on RHEL.

The watch command can be incredibly useful for monitoring system activity, tracking changes, and observing command output over time.

We'll walk you through the steps to generate an SOS report for RedHat Support.

We will show you a step-by-step guide to configure and use Postfix for sending emails from your RHEL 9 terminal.

The tr command in Linux is a powerful tool used for translating or deleting characters.

We will explore the process of selecting a preferred NTP server for time synchronization.

we will walk through the process of configuring a Network Time Protocol (NTP) server on a RHEL 9 system.

We will explore the key aspects of `sshuttle` and how it can be a valuable addition to your networking toolkit.

This blog post provides a step-by-step guide on configuring a Splunk forwarder on a RHEL 9 host, enabling you to forward log data to a centralized Splunk instance for analysis.

This blog post explores the capabilities of the `mt` command, shedding light on its usage and significance in managing tape operations.

Wrapper scripts play a crucial role in enhancing the efficiency and manageability of various processes and commands.

is blog post explores the concept of backporting in RHEL, its significance, and how it enhances both stability and security.

This blog post delves into the significance of `nohup` and why it's crucial for uninterrupted task execution.

This blog post will guide you through the installation, configuration, and utilization of AIDE on a Linux system.

This blog post aims to shed light on the causes behind this error and provides a detailed guide on how to resolve it.

In this blog post, we'll walk through the steps to install `python3-pip` and explore how to use the `pip3` package manager.

We'll touch upon the evolving landscape of cryptographic hashing and what the future holds.

In Bash scripting, the dollar sign `($)` holds special significance as it is used to reference the value of a variable.

In this guide, we'll walk through the steps of creating an alias for a command of your choice in your Bash configuration.

In the realm of secure communication between systems, generating SSH keys plays a pivotal role. The `ssh-keygen` command allows users to create cryptographic keys used for authenticating and securing connections.

In this blog post, we delve into the intricate world of IDENT authentication, uncovering its role in networking and system authentication protocols.

Let's delve into the timeless debate between these two iconic text editors.

In this blog post, we'll delve into the features, benefits, and the impact of Red Hat Insights in modern IT landscapes.

In today's cyber landscape, robust security measures are non-negotiable. Security-Enhanced Linux (SELinux) emerges as a pivotal framework fortifying systems against vulnerabilities.

Vim, a powerful text editor, offers various customization options to suit users' preferences. Enabling line numbers can significantly aid navigation and reference while editing files.

Splunk is a powerful tool for analyzing, monitoring, and visualizing machine-generated data. Setting up Splunk involves a few steps to harness its capabilities fully.

This blog post delves into the importance of regularly monitoring the `aide.log` file, highlighting its role in identifying system changes, providing early detection of security threats, and ensuring compliance and audit trails.

When it comes to choosing between LZO and GZIP compression for Bacula backups, it's essential to weigh the trade-offs between speed, compression efficiency, and resource utilization.

Let's delve into mastering `firewall-cmd` rich rules to fortify your system's defenses.

Let's delve into SSH Agents, what Agent Forwarding is, and how to configure it for secure remote access.

This guide walks you through the process of acquiring the subscription, downloading the official RHEL9 ISO, registering your machine, and activating it for updates.

In this guide, we'll delve into the functionalities of these commands, their configurations, and when to use each for optimal security.

In this tutorial, we will show you how to use the xfreerdp package to establish a remote desktop connection to a Windows machine from your Linux terminal.