| /bin /usr/bin | Contains programs available to all users |
| /sbin /usr/sbin | Contains programs meant to be used by system administrators |
| /var/log | Contains the log files made by various applications. |
| /home | Contains all the personal directories of the users of the system |
| /boot | Contains the files needed by the operating system to load itself into memory. |
| /etc | Contains the system configuration files used by various applications |
| /mnt | Contains the mount points for any removable devices in the system (floppy disks, CD Roms) |
| /proc | Contains the system state information. The info in the files of this directory is maintained directly by the operating system kernel. |
NOTES
The /usr/local/bin directory usually holds new programs as and when they are installed.
Shared libraries reside in the /lib, /usr/lib and /usr/local/lib directories.
Transient and temporary files can be found under /var/tmp and /tmp. The /tmp directory is cleaned up by startup scripts after every reboot, but the /var/tmp directory is not.
The users home directories are usually created under /home
Linux OS Directories