Brief Overview: File System in Linux

The File system is used to control how data is stored and retrieved. Each file served a specific purpose. Remember one thing, Everything is a file in Linux. This blog provides a brief overview of a File System in the Linux operating system.

/rootcontains everything in the root directory. It is the home directory of the root user.
/binUser Binaries/ Executable Files for user applications
/sbinsystem binaries for admin
/homeUsers home directory
/bootcontains files needed to boot the system. e.g. GRUB bootloader
/etccontains configuration files (host-specific). It is used to control the operation of a program. Most popular directory among users.
/etc/passwdpassword file
/etc/groupUser group file
/etc/shadowcontains shadow password suite
/etc/inittabconfiguration file for init
/devcontains device files
/varcontains variable data files
/etc/motdcontains post login message of day file
/proccontains process & kernel information
/usruser programs. It is recommended to keep Linux system files.
/libcontains essential shared libraries and kernel modules needed by the programs on the root file system
/mediaremovable devices
/selinuxSELinux configuration files. It contains all policy files and main configuration files.
/tmpcontains temporary files
/optthird party applications
/srvcontains data for servers
/mnttemporary mount directory
/runused to store temporary data

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Disclaimer: This tutorial is for educational purpose only. Individual is solely responsible for any illegal act.

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