UNIX/Linux

UNIX and Linux Commands Tutorials

Change SSH Port In Linux

How To Change SSH Port in Linux – An Easy Guide

The default port on SSH is 22. But for security reasons, it’s a good idea to change SSH port in Linux. We’ll discuss why it’s necessary and how to make the change in a step….

Linux ⁄dev⁄null

/dev/null in Linux

/dev/null in Linux is a null device file. This will discard anything written to it, and will return EOF on reading. This is a command-line hack that acts as a vacuum, that sucks anything thrown….

Reduce PDF Size Linux

Reduce PDF File Size in Linux

In our Linux system, If we have a large PDF file, we may want to reduce it’s size. We shall look at different ways to reduce PDF size or compress PDF files in Linux in….

Top 50 Linux Commands

Top 50+ Linux Commands You MUST Know

Using Linux command on a regular basis? Today we’ll look at 50+ Linux commands you must know! The commands listed below are some of the most useful and most frequently used Linux commands. Let’s get….

Generate SSH Keys for password-less login in Ubuntu

SSH (Secure Shell) is a cryptographic network protocol which is used for establishing secure connections between a remote client and a server, using the TCP protocol for security and reliability. SSH based connections support various….

Install TigerVNC on Ubuntu 18.04

VNC (Virtual Network Computing) is a software package which serves as a medium of connection between a user client and a remote computer. It creates a session with the remote server, which allows us to….

Opening a port on Linux

Before we learn about opening a port on Linux, let’s understand what network ports are. A port is a communication endpoint. Within an operating system, a port allows the data packets specific processes or network….

Linux Nload Command

Linux nload command

nload is a Linux command-line tool used to monitor network traffic and bandwidth usage in real time, using insightful graphs and traffic statistics. In this article, we shall take a quick look at what the….

Linux Tcpdump Command (1)

Linux tcpdump command

tcpdump is a command-line utility which allows us to capture and analyze network traffic going through our system. Depending on the filtering options, we can use this tool to effectively help troubleshoot any kind of….

Change timezone in Ubuntu 18.04

On Ubuntu, the system timezone is set during the installation process, but can be changed later. Configuring the appropriate timezone is important for a lot of us, so let us find out how we can….

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