Linux in 100 Seconds

Linux in open source operating system that makes it possible for humans to play with computers it was created in 1991 by University of Helsinki student Linus Torvalds his goal was to create a free version of the Minix operating system which itself was based on Unix today it's used everywhere like the vast majority of web servers embedded apps like your smart TV mobile devices running Android and is by far the best choice for your personal computer with many different distros to choose from like Debian Arch and Fedora just to name a few just like Windows or Mac OS Linux is an operating system that manages a computer's memory and processes allowing Hardware to communicate with software when you fire up a Linux machine a bootloader will first put the system into memory at its core we have the kernel which is like a seed from which the rest of the operating system grows it's divided into multiple smaller subsystems like a process scheduler device drivers and a memory manager they're exposed with a system call interface which itself is wrapped with the c standard Library which provides an API that user applications can interact with now beyond the kernel we have applications that make the OS usable for humans which are provided primarily via the gnu project like a shell to interact with the kernel from the command line windowing systems on desktop developer utilities and countless other applications to get started install your favorite Linux distro open the terminal and notice how we're logged in as the root user on a specific Linux machine currently we're in the home directory of the root user which is shortened to this tilde character show its full name with the print working directory command now use change directories with a double period to go to the root of the file system use the ls command to print all the subdirectories here these are your critical system files let's go back home with CD tilde now create a new file with touch then edit it from the terminal with a tool like VI Vim Nano or emacs in Vim type Ida insert write your screenplay hit Escape then colon WQ to write it to the file system now use the cat command to read the file if it's really big use grep to find all the lines in that file that contain in a search term or pattern if we want to see how big that file is we can enter the disk usage command every file has an owner and a set of permissions assigned to it we can change the owner with the Chone command or its permissions with chamod now if your current user doesn't have proper permissions you can put super user do in front of any command to run it with elevated privileges to install new software on this machine we can use a package manager like Advanced package tool which will retrieve the code from the cloud and place it in the proper location on your system we just went through a bunch of commands let's recap everything with history this has been Linux in 100 seconds if you want to see more short videos like this hit the like button and subscribe thanks for watching and I will see you in the next one

Channel: Fireship

Views: 1,223,277

Keywords: webdev, app development, lesson, tutorial

Id: rrB13utjYV4

Length: 2min 41sec (161 seconds)

Published: Fri Mar 11 2022