File System Structure

File System Structure
/Bin
It contains binaries are basic command line utilities. These commands only can execute by both root as well as the normal user.

/Boot
It contains boot loader files, image of the kernel and init.rd information.
Boot Loader contains bootable files and commands which are required to boot the Operating System. There are two different types of Linux boot loaders are there.
LILO (Linux Loader)
GRUB (Grand Unified Bootable Loader) 

/Dev
It contains Hardware Devices information.

/Etc
It contains Operating System main configuration files.

/Home
It contains normal users home directories information.

/Lib
It Contains library files that supports the binaries located under /bin and /sbin

/Media
It Displays mount point for Removable Devices.

/Mnt
It contains temporary mount points for the Hardware Devices.

/Opt
It contains third party applications information.

/SBin
It contains Super Users binary information.

/Srv
Contains server specific services related data.

/Tmp
It contains temporary files and downloaded files information.

/Usr
Majority of the Operating System will be loaded into the Sub Directory and it Contains binaries, libraries, documentation, and source-code for second level programs.

/Var
It contains Variable data information (Ex: – Log Files, Mail Spool Information).

/Root
It contains Super Users home directories information.

/Proc
It contains all kernel related running process information.