Important Directory Executable Mount Points Configuration Boot Loader Directory

Root or super user Home directory located in the /root
User home directory Located in the /home/username
User Executable File /bin /usr/bin /usr/local/bin
System Executable file /sbin /usr/sbin /usr/local/sbin 
 

Basic Essential Files
User Executable /bin
System Executable /sbin  refer to system bin
Non Essential Files such as graphical Environment or office tool installed in the
User /usr/bin
System /usr/sbin
Software Compiled Source Code Located in the
User /usr/local/bin
System /usr/local/sbin

Mount Point Directory /media /mnt
Configuration File are located in the /etc Directory
Temporary Files are located in /tmp directory
Kernal and Boot Loader files are located in the /boot

System Information located in /proc /sys
/proc directory it will give the data about the Kernel , Hardware, Running Process
/sys is related to the Hardware Information.

Shared Libraries it provide source code used by many Linux application
/lib /usr/lib /usr/local/lib

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