SysAdmin

Perf is a lightweight utility for CPU profiling and performance analysis. Learn the basics of this tool in this comprehensive guide.

The which command shows the full path to a command's executable file in Linux. This tutorial shows how to use the which command.

In older Linux distributions, managing services is possible with the chkconfig command. Learn how to list, start, stop, and reset services, as well as enable or disable services from startup.

Autoscaling of pods in Kubernetes helps control resource utilization and ensures that the adequate number of pods are running at any given time. This article will explain what horizontal pod autoscaling (HPA) is, and provide steps to configure it in your cluster.

The write command is simple. It sends messages between two terminal sessions or between different users. Read this guide to learn how to use the write command.

Jenkins helps developers and organizations automate coding and deployment. This tutorial shows how to install Jenkins on Mac.

This tutotial shows you how to use the whoami command to find the name of the effective user on a Linux system.

Kind is an open-source tool for running a Kubernetes cluster locally, using Docker containers as cluster nodes. This tutorial will show you how to install Kind and provide some useful tips for managing your Kind Kubernetes cluster.

Systemd is a service and system manager that logs data. The journalctl command helps access these logs and view messages output by the system. Learn how to fully utilize the command in this guide.

This tutorial shows how to create a bootable USB and reinstall Ubuntu. Reinstalling the OS is sometimes the easiest solution for fixing issues with drivers or after an upgrade failure.