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Introduction to linux1

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Gourav Varma

This document provides an introduction to Linux, including an overview of Linux and its history, the Linux shell, popular Linux distributions, Linux accounts and access, and how to connect to a Linux server using SSH. It outlines the topics that will be covered in the DevOps Essentials training, such as Linux commands, file permissions, services, environment variables, processes, package installation, and shell scripts.

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INTRODUCTION TO LINUX DEVOPS ESSENTIALS DAY-1 182182
Introduction to Linux DevOps Essentials 2020
Session outline  What is Linux?  Linux Shell, Access and Linux File system structure  Basic Linux/ Unix commands  Top 50 command used in Linux  Changing file permissions and ownership  Filter commands/ Simple filter and advance filter commands.  Start and Stop services  Working with Environment Variables  Find and kill the process with id and name  Package installation using RPM and YUM  Shell scripts
What is Linux LinusTorvalds,in 1991 Released the first version of his Linux Kernel. Operating system“kernel” is the core software used to communicate with computer hardware. It’s a core and modular system of drivers used to create a Resource manager for allocating memory and time to system and user processes as well as interacting with files (I/O) Kernel operates in its own memory or“kernel-space”.
Linux Shell On user log-in,the system runs a shell A shell is the environment within which you will interface with the kernel via commands. It determines the syntax for complex command-line operations and shell scripting. The shell you’re using is called“bash,” the successor to the venerable “Bourne Shell” called“sh” BASH: “BourneAgain SHell”
Popular Linux Distributions  Red Hat Enterprise Linux  Ubuntu  Fedora  Amazon Linux  SUSE/ SUSE Enterprise Linux  CentOS  Debian  Arch Linux
Linux accounts & Access To access a Linux system, you need to have an account. A Linux account includes the following: - username and password - uid and gid - a home directory, which is where you are placed by default when you log in - a default shell Introducing OpenSSH  SSH is the“Secure Shell”  SSH supports a file-transfer subsystem – scp  SSH is used to remotely login to a Linux server.  Command to connect a server with IP 192.168.1.1  ssh <username>@192.168.1.1

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Introduction to linux1

  • 1. INTRODUCTION TO LINUX DEVOPS ESSENTIALS DAY-1 182182
  • 3. Session outline  What is Linux?  Linux Shell, Access and Linux File system structure  Basic Linux/ Unix commands  Top 50 command used in Linux  Changing file permissions and ownership  Filter commands/ Simple filter and advance filter commands.  Start and Stop services  Working with Environment Variables  Find and kill the process with id and name  Package installation using RPM and YUM  Shell scripts
  • 4. What is Linux LinusTorvalds,in 1991 Released the first version of his Linux Kernel. Operating system“kernel” is the core software used to communicate with computer hardware. It’s a core and modular system of drivers used to create a Resource manager for allocating memory and time to system and user processes as well as interacting with files (I/O) Kernel operates in its own memory or“kernel-space”.
  • 5. Linux Shell On user log-in,the system runs a shell A shell is the environment within which you will interface with the kernel via commands. It determines the syntax for complex command-line operations and shell scripting. The shell you’re using is called“bash,” the successor to the venerable “Bourne Shell” called“sh” BASH: “BourneAgain SHell”
  • 6. Popular Linux Distributions  Red Hat Enterprise Linux  Ubuntu  Fedora  Amazon Linux  SUSE/ SUSE Enterprise Linux  CentOS  Debian  Arch Linux
  • 7. Linux accounts & Access To access a Linux system, you need to have an account. A Linux account includes the following: - username and password - uid and gid - a home directory, which is where you are placed by default when you log in - a default shell Introducing OpenSSH  SSH is the“Secure Shell”  SSH supports a file-transfer subsystem – scp  SSH is used to remotely login to a Linux server.  Command to connect a server with IP 192.168.1.1  ssh <username>@192.168.1.1