NOTES

• Components of Linux

  Boot Loader

  OS kernel

  Daemons

  OS Shell

  Graphics server

  windows manager

  Utilities

• Linux Architecture

  Hardware

  kernel

  shell

  System utilities

• Linux System Hierarchy

  !Untitled.png

  Linux File System Hierarchy - > Click Here for the source

  /bin - which has all the system binary files required for system maintenance, recovery, and basic system functionality COMMAND BINARIES . Ex : ls , cat , cp , mv

  /boot - The files required to boot the system like bootloader exec files etc.,

  /dev - Which has all the necessary files that will help the system to manage / to control the all attached hardware things

  /etc - Which has local system configuration files

  /lib - Shared library files required for the system boot

  /media - External Removable Media like USB or any media device files

  /mnt - Temporary mount point for regular filesystems.

  /opt - Optional files such as third party applications , services file are there

  /home - It has a subdirectory for all users on the system for storage files

  /var - This directory contains variable data files such as log files, email in-boxes, web application related files, cron files, and more.

  /usr - Contains executables, libraries, man files, etc.

  /tmp - Contains temporary files that will be saved by many applications ad services and they will be deleted after the boot

  /sys - The /sys directory in Linux is a virtual file system that
  exposes kernel parameters and device attributes, allowing users to
  interact with and configure the kernel and hardware. It provides
  information and settings for system administrators and developers,
  making it a valuable resource for managing the Linux system.

  /proc - The /proc directory in Linux is a virtual file system that
  provides information about running processes, system status, and
  configuration. It offers a way to access details about the system's
  memory, CPU, devices, and currently running programs through special
  files and directories.