Delete/Remove File In Linux

Delete/Remove File In Linux

Files can be removed or deleted by using different commands in Linux. The removal of the file deletes related file system information from the file system table. While deleting a file there are different ways like prompt deletion, display verbose output, etc. Delete/Remove File with rm Command The rm command is a defacto command to … Read more

Add A User To A Group In Linux

Add A User To A Group In Linux

In Linux users are associated with the groups. These groups are used to set permissions about files and folders. Users may have single or more groups related to them. The second group is called as secondary group . In this tutorial, we examine how to add a user into a group for different scenarios like … Read more

netstat Command Tutorial In Linux with Example

netstat Command Tutorial In Linux with Example

The netstat command is used to display network connections for network protocols like TCP and UDP. The netstat can display routing tables, network interfaces, network protocol statistics, open ports, etc. Both Linux distributions and Windows operating systems provide the netstat command. In this tutorial, we examine different usage examples for the netstat command. netstat Command … Read more

How To Install Docker On Ubuntu?

How To Install Docker On Ubuntu?

Docker is a container technology very popular in Linux distributions. The docker provides the ability to run single or more commands and applications in an isolated secure environment like a VM but with few resources. As a popular Linux technology, Ubuntu supports docker containers. There are different ways to install Docker on Ubuntu. But two … Read more

Linux telnet Command Tutorial

Linux telnet Command Tutorial

Telnet is a network protocol and tool used to connect remote systems via a command-line interface. Similar to SSH, telnet can be used to manage remote systems. Telnet use the TCP port 23. Event the telnet is created by Microsoft it is popularly used Linux and network systems. In this tutorial we examine how to … Read more

grep Command Tutorial In Linux with Examples

grep Command Tutorial In Linux with Examples

The grep command is the very popular command used to filter string, text, and data in files and command outputs. From an academic point of view, the grep command searches for PATTERNS in each FILE. PATTERNS can be simple text, number, string, or regex (regular expressions). grep Command Syntax The grep command has the following … Read more

tcpdump Tutorial with Examples

tcpdump Tutorial with Examples

The tcpdump command or tool is used to analyze network packets on Linux systems. It provides the ability to parse, filter and display network packets and protocols in different ways. The tcpdump is created in 1988 for BSD systems and ported most of the Unix, Linux operating systems and became very popular. The tcpdump is … Read more

How To Install and Setup Pi-Hole On Ubuntu and RaspberryPi?

How To Install and Setup Pi-Hole On Ubuntu and RaspberryPi?

Pi-Hole is a network-wide adblocking software that can be installed on Linux distributions like Ubuntu, RaspberryPi. Also, the Pi-Hole can be installed on Docker containers easily. The Pi-Hole is used as a DNS server and checks every DNS request and domain name if it is secure. If the requested domain name is not secure the … Read more

How To Add Comment To Dockerfile?

How To Add Comment To Dockerfile?

Dockerfile is used to configure docker images and specify commands to be executed before the image creation. Dockerfile contains instructions to read by the docker engine and executed properly. Even the Dockerfile may contain a lot of commands, configuration, etc. which should be explained and described for later use. Comments can be added into a … Read more