Linux Howtos, Tutorials & Guides
If you’ve ever monitored your Linux system and seen that nearly all RAM appears “used,” you might worry you’re running out of memory. But Linux aggressively uses free memory for caching to speed up file and disk operations. In some scenarios—benchmarking, debugging, or managing memory pressure—you may want to clear RAM cache in Linux. In …
Running out of space on the Linux root partition (/) can cause failed updates, application errors, and even system crashes. Fortunately, you can extend root partition in Linux safely with the right tools and backups.This guide explains multiple methods—using GParted, Logical Volume Manager (LVM), or shrinking another partition—based on your setup. Understanding the Root Partition …
When working with Linux, every command you run produces a special numeric result called an exit status or return code. This number quietly tells you whether the command was executed successfully or if it failed. Knowing how to check exit status in Linux is an essential skill for system administrators, developers, and anyone learning Bash …
Linux systems run a variety of system services (daemons) in the background — such as process management, cron jobs, logging, SSH, DNS, web servers, and more. As a system administrator, it is essential to know how to list running services in Linux to ensure that critical services are active, unnecessary ones are disabled, and your …
Linux is a powerful operating system known for its flexibility and automation capabilities. One of the most common requirements for system administrators and developers is to auto execute commands or scripts during reboot or startup. This automation ensures that essential services, applications, or maintenance tasks run without manual intervention each time the system boots. In …
Monitoring open network ports is one of the most important tasks for system administrators, developers, and network engineers. Every service running on a Linux system communicates over a port, either using TCP (Transmission Control Protocol) or UDP (User Datagram Protocol). Being able to watch TCP and UDP ports in real-time helps detect unauthorized connections, troubleshoot …
the world of system administration, networking is at the heart of server management. Whether you are configuring a new server, troubleshooting connectivity issues, or monitoring network performance, knowing the right Linux Networking Commands is essential for a Sysadmin. Linux Networking Commands for Sysadmins: This guide covers the most important Linux networking commands every Sysadmin should …
This lesson we’re going to talk about how you prioritize processes (manipulate Process Priority in Linux) they’re running on a Linux system. In my previous article, I had explained following concepts and I would request you to read that guides: How Linux handles Processes How to Kill a Process (Terminate a running process) in Linux …
In this lesson we’re going to review how Linux handles Processes. What exactly is a Process? So, what exactly is a Process. For our purposes a process is a program that’s been loaded from a long-term storage of device like the hard disk drive into your system RAM and is currently being processed by the …
In this article, we’ll find out about the How to Kill Linux Process Using Kill, Pkill, and Killall and how to find and terminate a process using different tools and commands in Linux. Let’s spend a few minutes discussing How you go about killing a running process on a Linux system from the shell prompt. …