A brief Introduction to Linux Operating System.
1 like127 views
The document provides an overview of Linux, an open-source operating system created by Linus Torvalds in 1991, detailing its history, kernel, distributions, and architecture. It covers various topics such as the Linux shell, file system, permissions, processes, and networking, along with its applications in server environments and embedded systems. The conclusion emphasizes Linux's versatility, security, and collaborative nature stemming from its open-source foundation.
A brief Introduction to Linux Operating System.
- 1. Introduction to Linux Manash Kumar Mondal October 4, 2024 Manash Kumar Mondal Introduction to Linux October 4, 2024 1 / 19
- 2. Table of Contents 1 What is Linux? 2 History of Linux 3 Linux Kernel 4 Linux Distributions 5 Linux Architecture 6 Linux Shell and Command Line 7 Linux File System 8 Linux Permissions 9 Linux Processes 10 Linux Networking 11 Linux for Servers 12 Linux Security 13 Linux in Embedded Systems 14 Conclusion Manash Kumar Mondal Introduction to Linux October 4, 2024 2 / 19
- 3. What is Linux? What is Linux? Linux is a free and open-source operating system. It is based on the Unix operating system. Linux was created by Linus Torvalds in 1991. Manash Kumar Mondal Introduction to Linux October 4, 2024 3 / 19
- 4. History of Linux History of Linux 1969: Unix was developed at AT&T Bell Labs. 1991: Linus Torvalds created Linux as an open-source project. Linux Kernel development began in the early 90s. Today, Linux is used in a wide range of systems. Manash Kumar Mondal Introduction to Linux October 4, 2024 4 / 19
- 5. Linux Kernel The Linux Kernel The core part of the Linux operating system. Manages hardware, memory, and processes. Open-source: Constantly updated by a community of developers. Manash Kumar Mondal Introduction to Linux October 4, 2024 5 / 19
- 6. Linux Distributions Popular Linux Distributions Ubuntu Fedora Debian Red Hat Enterprise Linux Arch Linux Manash Kumar Mondal Introduction to Linux October 4, 2024 6 / 19
- 7. Linux Distributions What is a Linux Distribution? A Linux distribution includes the Linux kernel and additional software. Different distributions are tailored to different users and purposes. Package managers like APT (Debian-based) or YUM (Red Hat-based) manage software. Manash Kumar Mondal Introduction to Linux October 4, 2024 7 / 19
- 8. Linux Architecture Linux Architecture Overview Kernel: Core of the OS. Shell: Interface between user and kernel. System Libraries: Essential utilities and system functions. Applications: Programs run by the user. Manash Kumar Mondal Introduction to Linux October 4, 2024 8 / 19
- 9. Linux Shell and Command Line Linux Shell A shell is a command-line interface to interact with the system. Bash (Bourne Again Shell) is the most popular shell in Linux. The shell allows users to run commands, scripts, and programs. Manash Kumar Mondal Introduction to Linux October 4, 2024 9 / 19
- 10. Linux Shell and Command Line Basic Linux Commands ls: Lists directory contents. cd: Changes the current directory. mkdir: Creates a new directory. rm: Removes files or directories. man: Displays the manual for a command. Manash Kumar Mondal Introduction to Linux October 4, 2024 10 / 19
- 11. Linux File System Linux File System Structure Everything in Linux is considered a file. Root directory: ‘/‘ is the base of the file system. Important directories: /home: User files and directories. /etc: Configuration files. /bin: Essential command binaries. Manash Kumar Mondal Introduction to Linux October 4, 2024 11 / 19
- 12. Linux Permissions File Permissions in Linux Files have read (r), write (w), and execute (x) permissions. Permissions are assigned to the owner, group, and others. Change permissions with the chmod command. Manash Kumar Mondal Introduction to Linux October 4, 2024 12 / 19
- 13. Linux Processes Linux Processes A process is a running instance of a program. Manage processes with commands like ps, top, kill. Processes can be foreground or background tasks. Manash Kumar Mondal Introduction to Linux October 4, 2024 13 / 19
- 14. Linux Networking Linux Networking Linux provides powerful networking tools. Common commands: ifconfig, ping, netstat, ss. Linux is widely used in server environments for its networking capabilities. Manash Kumar Mondal Introduction to Linux October 4, 2024 14 / 19
- 15. Linux for Servers Linux in Server Environments Linux dominates the web server market (e.g., Apache, Nginx). High performance, security, and stability make Linux ideal for servers. Cloud platforms like AWS, Google Cloud, and Azure offer Linux-based services. Manash Kumar Mondal Introduction to Linux October 4, 2024 15 / 19
- 16. Linux Security Linux Security Linux is known for its security features. SELinux (Security-Enhanced Linux) adds an additional layer of security. Regular updates and the open-source nature help quickly address vulnerabilities. Manash Kumar Mondal Introduction to Linux October 4, 2024 16 / 19
- 17. Linux in Embedded Systems Linux in Embedded Systems Linux is widely used in embedded systems (e.g., IoT, routers, smartphones). Its modularity and lightweight footprint make it ideal for resource-constrained devices. Manash Kumar Mondal Introduction to Linux October 4, 2024 17 / 19
- 18. Conclusion Conclusion Linux is a versatile, secure, and powerful operating system. It is widely used in servers, desktops, embedded systems, and more. The open-source nature allows anyone to contribute and improve Linux. Manash Kumar Mondal Introduction to Linux October 4, 2024 18 / 19
- 19. Conclusion Thank you! Questions? Manash Kumar Mondal Introduction to Linux October 4, 2024 19 / 19