IntroductionLinux is an open-source operating system that is widely used in software development, servers, and cybersecurity. Unlike Windows, Linux relies heavily on a command-line interface (CLI), which allows users to interact with the system using text commands. Learning Linux basics is important because it helps users understand how systems work behind the scenes and improves efficiency when working on technical tasks. The Command Line Interface and the ShellThe command line interface (CLI) is a text-based environment where users type commands to perform operations such as navigating files, creating directories, and managing the system.The shell is the program that interprets the commands entered by the user. The most common shell in Linux is Bash. When a command is entered, the shell processes it and communicates with the operating system to execute it. Navigating the Linux File SystemLinux uses a hierarchical file system that starts from the root directory (/). Important commands include: pwd: shows the current directory ls: lists files and folders cd: changes directoriesExample:cd Documentscd .. File and Directory ManagementCreating files and folders: touch filenameDeleting: rmdir foldernameCopying and moving: Working with FilesViewing files: less filenameEditing files:- nano filenameWriting to files: echo "Hello" > file.txt echo "World" >> file.txt Searching for Files and Content find . -name "filename" grep "text" filenameThese commands help locate files and search within them. File PermissionsLinux controls access through permissions: Execute (x)To change permissions: chmod +x script.shTo view permissions: Basics of NetworkingNetworking allows computers to communicate.Useful commands: ip a (shows IP address) ping google.com (tests connectivity)Key concepts include IP addresses, routers, and DNS. Package ManagementSoftware installation in Ubuntu is done using:*sudo apt update*sudo apt install package-nameExample:sudo apt install git Templates let you quickly answer FAQs or store snippets for re-use. as well , this person and/or - IntroductionLinux is an open-source operating system that is widely used in software development, servers, and cybersecurity. Unlike Windows, Linux relies heavily on a command-line interface (CLI), which allows users to interact with the system using text commands. Learning Linux basics is important because it helps users understand how systems work behind the scenes and improves efficiency when working on technical tasks.- The Command Line Interface and the ShellThe command line interface (CLI) is a text-based environment where users type commands to perform operations such as navigating files, creating directories, and managing the system.The shell is the program that interprets the commands entered by the user. The most common shell in Linux is Bash. When a command is entered, the shell processes it and communicates with the operating system to execute it.- Navigating the Linux File SystemLinux uses a hierarchical file system that starts from the root directory (/). Important commands include:- pwd: shows the current directory- ls: lists files and folders- cd: changes directoriesExample:cd Documentscd ..- File and Directory ManagementCreating files and folders:- mkdir foldername- touch filenameDeleting:- rm filename- rmdir foldernameCopying and moving:- cp file1 file2- mv file1 file2- Working with FilesViewing files:- cat filename- less filenameEditing files:- nano filenameWriting to files:- echo "Hello" > file.txt- echo "World" >> file.txt- Searching for Files and Content- find . -name "filename"- grep "text" filenameThese commands help locate files and search within them.- File PermissionsLinux controls access through permissions:- Execute (x)To change permissions:- chmod +x script.shTo view permissions:- Basics of NetworkingNetworking allows computers to communicate.Useful commands:- ip a (shows IP address)- ping google.com (tests connectivity)Key concepts include IP addresses, routers, and DNS.- Package ManagementSoftware installation in Ubuntu is done using:*sudo apt update*sudo apt install package-nameExample:sudo apt install git