In the linux file system hierarchy, all the files are stored in a single inverted tree, Because the root directory is on the top of the hierarchy and directories and sub directories are below the root.

The root directory which is “/” as show in the above image is the starting of the file system. More than that “/” is used to seperate the directories like “/etc/passwd and /etc/group”. Below will describe one by one the directories under root.

/boot : The files which needs to start the boot process

/etc : System configuration files.

/home : All the user’s home directories are here. In simple words, users home folder.

/root : Home directory of the root user

/bin : User commands

/sbin : Administrative commands

/var : Files which changes by time. Persistence between boot. Dynamically change by time. eg – log files, databases

/dev : Special files which system needs to access hardware.

/proc : contains files which gives system information like /proc/cpuinfo

/mnt : list mount points

/run : contains files which are non persistent data means looses data within boots.

So, this article basicaly gives an idea about the linux file system hierarchy with the folder structure.

Other resources –

cheers.