Learn Linux

The ‘source’ command, an integral part of Linux and Unix-like systems, is a shell built-in that reads and executes commands from a file in the current shell environment. While it may seem a trivial part of your command-line experience, ‘source’ …

The ‘for’ command is one of the fundamental building blocks in Linux scripting. It allows you to automate repetitive tasks, making your workflow more efficient and less error-prone. Whether you’re a system administrator or a power user, mastering the ‘for’ …

Handling files efficiently is a critical part of Linux system administration, and renaming files is no exception. While the basic ‘mv’ command can handle most file renaming tasks, there are several other techniques that can make the process more flexible …

In Linux, creating a new user and setting up an SSH key for them is a common task, especially in environments that require secure and efficient remote access. SSH keys provide a more secure way of logging in compared to …

Logical Volume Management (LVM) offers a flexible and efficient way of managing disk space in Linux, but it can sometimes throw perplexing errors. One such error is ‘Cannot find LVM volume group,’ which typically arises when the system can’t detect …

The GRand Unified Bootloader, more commonly known as GRUB, is the default bootloader for most Linux distributions. It’s the first software that runs when a computer starts and is responsible for loading the operating system into memory. GRUB is especially …

Swap space is an integral part of Linux memory management, helping to maintain system stability and performance when physical memory is insufficient. In this comprehensive guide, we’ll delve into various methods for checking swap usage size and utilization, as well …

As a system administrator, it’s essential to have a solid understanding of various Linux performance commands to monitor, optimize, and troubleshoot your systems. These commands provide valuable insights into resource usage, system processes, and overall performance, helping you maintain a …

The sysstat utility is a powerful tool for monitoring system performance on Ubuntu and other Linux distributions. However, you may encounter an error when running ‘sar -u’, indicating that data collecting is not enabled.

Systemd has become the default init system for most Linux distributions, providing an efficient way to manage services and their dependencies. Creating a custom Linux service using systemd allows you to control the behavior and execution of your applications or …