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Linux

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Interface configuration (ifconfig) is a command line utility tool used to configure network interfaces in Unix and Linux operating systems. In most of the newly installed Linux systems if you tried to view your network configurations using the “ifconfig” command you’ll be prompted with an error as shown in the below screenshot. Command ‘ifconfig’ not found error in Ubuntu You’re getting this error because the latest Ubuntu releases does not have a package called “net-tools”.…

Google Chrome is a cross platform web browser developed by the tech giant google. According to July 2020 statistics, 65.89% of the people all around the globe uses chrome as their web browser which makes it as the most used web browser in the world. Google chrome is based on an open source project known as Chromium. Even though google chrome is based on an open source project the browser it self is not open…

Summary: sudo command isn’t included in Debian by default. That’s why you get the error message saying “-bash: sudo: command not found”. In this article I will show you how to fix sudo command not found in Debian. “sudo” is a Linux command which grunt you the permission to execute programs with the security privileges of another user. By default, it will give you the “superuser/root” privileges to execute your programs. After a fresh install of…

Gzip which stands for GNU Zip is a file compression and decompression tool that you find in most of the Linux distributions. This tool will compress each file into a single file. After the compression, the original file will be replaced by the compressed file which has a “.gz” extension as the suffix. For more information read the man page of gzip command by typing the following command in your Linux terminal. man gzip Man…

Having a good understanding of Linux file permissions is very important to your Linux carrier. In this article, we are going to have an in-depth explanation of Linux file permissions. There are two authorization levels in the Linux world. File OwnershipFile Permission Linux File Ownership Every file, directory in your Linux system have three types of owners. They are: UsersGroupsOthers Users User, also known as the owner of the is the one who creates the…

Summary: This article will help you to learn grep command in Linux together with Regex. What is a Regular Expression? A regular expression (regex) describes a set of possible input strings. In simple words they allow us to search for text in files. Regular expressions descend from a fundamental concept in Computer Science called “finite automata theory“. The simplest regular expressions are a string of literal characters to match. The string matches the regular expression…

Summary: This article explains to you how does hardware and software work together. Nowadays, it’s almost impossible to find a person who doesn’t own a computer. Computers have become a part of our lives. For me, I can’t imagine my life without a computer. Even though almost every person in the world has a PCs and Laptops, only a few of them know the inner workings of a computer. In this article, I will explain…

Burp Suite is a GUI based cyber security tool which is use to perform security testing of web applications. This tool contains a proxy server which let the user to intercept and manipulate the communication between the client and server. Other than the interception proxy burp suite also contains many other features which are helpful when performing web application penetration testing. This tool is developed and maintained by PortSwigger Web Security.