Linux Filesystem Essentials Every Admin Should Know

[Sunnykumar1]

Linux Filesystem Hierarchy – Key Directories

/etc → System & application configuration files
/boot → Kernel, initramfs, and bootloader files
/var → Logs, spool files, runtime data
/bin & /sbin → Essential user & system binaries
/usr → User-level applications & libraries
/home → User directories
/tmp → Temporary files
/proc → Kernel & process information (real-time)
/opt → Optional / third-party software

/dev → Device files
/lib → Essential shared libraries and kernel modules
/mnt → Temporary mount point

Pro Tip:-

/tmp → cleaned after reboot
/var/tmp → won't be cleaned after reboot

[Mohamad-AboRas]

Hi,

Thanks for sharing such basic & usefull information.
In adition, you may consider reviewing the Filesystem Hierarchy Standard for information about various system directories and their contents.

Regards,
Mohamad Abo Ras