What is SSH and How Does It Work? SSH (Secure Shell) is a powerful tool that lets you securely connect to another computer over a network. Imagine you have a computer in the moon and need to access a server…
If you’re running a Linux instance and suspect that the bandwidth is being overused, you can use a few tools to investigate what’s causing the high traffic. Tools like SAR, iftop, and NetHogs can help you identify the processes responsible…
You’ve been using Linux for a while, so you know the basics: ls, cd, cp.But now you’re stepping up your game. You need more. You’re ready to unlock the power of the Linux command line to elevate your workflow—whether it’s…
When you’re working with Linux systems, particularly those using systemd, journalctl is an essential tool for accessing and managing logs. journalctl provides a powerful and flexible way to query logs, troubleshoot issues, and monitor system events. In this guide, we’ll…
When working with Red Hat-based systems (like RHEL, CentOS, or Fedora), it’s important to be able to check when the system was rebooted and understand the reasons behind it. System reboots can happen for various reasons such as updates, crashes,…
When working with databases, one of the most common questions you may find yourself asking is, “How many rows are in this table?” In PostgreSQL, the answer might not be as straightforward as it seems at first glance. Although the…
Managing users in Linux is an essential aspect of system administration. Linux provides a number of commands for creating, deleting, and modifying user accounts. Below is a guide to some basic Linux user management commands that are commonly used: Key…
PostgreSQL, as one of the most advanced and widely used relational database management systems (RDBMS), offers a range of system views that can be utilized for monitoring and diagnosing database operations. These system views provide insights into the internal state…
As a parent, helping your child with math homework can sometimes feel challenging, especially when dealing with complex problems in subjects like geometry. My son, who is currently in 7th grade, recently came across a geometry problem that required finding…
As AI tools continue to make waves in the software development world, many non-technical colleagues—such as product managers (PMs) and designers—are eager to jump on the bandwagon and explore how they can use these tools to write code. With the…
