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Working with Vi editor in Unix Vi is a very powerful text editor on Unix. The below resources will help you when dealing with the vi editor in Unix.  This article is intended to work as a basic starting point or something that you can use on a regular basis for the basic needs. In short, this is a vi survival toolkit. Basic operation modes 1. Command mode to execute commands on the file with respect to its content.      Pressing the Esc button will take you to the Command mode. 2. Insert mode to manipulate the text content within the file.      Pressing the "Insert" key will take you to the insert mode. Create or Opening a file vi filename It will create a file if does not exist, otherwise the file will be opened. Adding or editing text content As soon as you open a file in vi, you will be in command mode. To edit the content, press the "Insert" key. This will take you to the Insert mode. Add the content using the keyboard. Exiting the vi editor T...

 Zip and unzip in Linux We can use the commands to zip and unzip the files or folders in Linux. Zip and unzip and such useful commands. The usage of the commands are described below. Zipping Create a zip file for a single file zip targetZipFilename.zip filetoZip.txt Add multiple files to the new zipfile zip targetZipFilename.zip filetoZip-1.txt filetoZip-2.txt Note : We can use wildcards for the filenames as needed. Add a file to existing zip file  zip -u existingZipFilename.zip filetoZip.txt Remove  single file from a zip file zip -d existingZipFilename.zip filetoRemoveFrom Zip.txt Zip directories and the contents zip -r ZipFilename.zip ./FolderInPWDToZip Note : -r is for recursive file selection. To zip everything in the present working directory zip -r ZipFilename.zip ./* Unzipping  The command without any arguments will unzip the contents to present folder. No additional folders will be created on extraction. Basic unzip  unzip zippedFile.zip Extract to ...

Termux No hesitation, you can certainly call Termux “The Android terminal”. Owing to it’s simplicity and capabilities, Termux stand so close to the original Linux terminal. Who is it for and who should read this? This is beginner article which will introduce you to the fundamentals of using Linux terminal on android devices. To understand something here, you should barely understand English and nothing else is a pre-requisite. 🤓 Let us figure out the basics.   Android If you are using an android device, you know that android is the operating system that run the show on your mobile phone. Android is an operating system with its core based on Linux. In fact, android is based on a modified version of Linux optimized for mobile devices. Terminal Terminal is a command line interface which can be used to communicate with or control the Operating system. So, a linux terminal can be used to control a Linux device. Terminal is a tool that comes default with a full fat Unix or Linux opra...