nslookup is a command-line administrative tool for testing and troubleshooting DNS (Domain Name Server). It is used to query specific DNS resource records (RR).| 8 Linux Nslookup Commands to Troubleshoot DNS (Domain Name Server)
This article provides some useful examples of "free" commands with options, that might be useful for you to better utilize memory that you have.| 10 ‘free’ Commands to Check Memory Usage in Linux
In this article, we focus on fundamental basic network troubleshooting tips that will come in handy when diagnosing network-related problems in Linux.| LFCA: Learn Basic Network Troubleshooting Tips – Part 12
In this article, we will introduce you a list of most frequently used Linux commands with their examples for easy learning.| A – Z Linux Commands – Overview with Examples
We have compiled a list of the top 20 command-line monitoring tools to track CPU usage, memory usage, disk usage, network traffic, and other important metrics.| 20 Command Line Tools to Monitor Linux Performance
In this article, we will explain four ways to check open ports and also will show you how to find which application is listening on what port in Linux.| 4 Ways to Find Out What Ports Are Listening in Linux
In this guide, we delve in and see how the ss command can be used to display varied network socket connection information in Linux with examples.| 12 ss Command Examples to Monitor Network Connections
In this article, we will review some of the most used command-line tools and utilities for network management, troubleshooting and debugging in Linux.| 22 Linux Networking Commands for Sysadmin
In this article, we will briefly talk about ports in computer networking and how you can list all open ports in Linux using netstat and ss command-line tools.| How to Find Out List of All Open Ports in Linux
In this article, we are going to review frequently used network configuration and troubleshooting commands in Linux systems.| 13 Linux Network Configuration and Troubleshooting Commands
Systemd is a service manager for Linux; a drop-in replacement for the init process, and the systemctl command is the primary tool to manage systemd.| How to Find Running Services in Linux with Systemd Commands [Quick Guide]
The standard port used by SSH service is 22/TCP. However, you might want to change SSH default port in your Linux server, in order to achieve some kind of security.| How to Change SSH Port in Linux
In this article we will show you how to synchronize local and remote system files/directories using rsync with non-standard ssh port in Linux.| How to Sync Files/Directories Using Rsync with Non-standard SSH Port