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🐧 Ubuntu Linux Ubuntu is a popular open-source Linux operating system based on Debian.It is user-friendly and widely used in education, servers, and desktops. 🔹 Installation of Ubuntu Linux Step…
🔓 Open Source Software What is Open Source? Open Source Software is software whose source code is freely available to: It focuses on freedom + transparency. Key features Examples (write…
🐧 GNU What is GNU? GNU stands for GNU’s Not Unix (recursive acronym 😄) It is a free software project started in 1983 to create a Unix-like operating system that…
🔧 What is a function? A function is a block of code that: 🔹 Function syntax OR ✅ Example 1: Simple function (EXAM BASIC ⭐) ✅ Example 2: Function with…
📦 What is an array? An array is a variable that can store multiple values under one name. ⚠️ Arrays are supported in Bash, not in very old sh. 🔹…
🔀 What is switch case? In shell scripting, switch case is written as case.It is used to match a value against multiple patterns. 🔹 Syntax Example 3: Check character type…
What is test command? The test command is used to check conditions and return true or false.It’s mainly used in shell scripts and if statements. 👉 It does not print…
📊 Comparison Table Feature vi editor nano editor Difficulty Hard to learn 😵 Very easy 😊 Editing style Mode-based Direct typing Modes Command, Insert, Visual No modes On-screen help ❌…
Nano is a super simple, beginner-friendly terminal text editor. 🔹 How to open nano Example: 🔹 Nano screen layout ^ means CtrlExample: ^O = Ctrl + O 🔹 Most useful…
Introduction The vi editor is a screen-oriented, full-screen text editor used in UNIX and Linux operating systems. It is one of the oldest and most powerful text editors, designed to…
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