/bin | Binary executables, essential Linux utilities |
/dev | Files representing disks and other devices |
/etc | Configuration and preferences |
/home | Where users files live, e.g., /home/mpciish2 |
/lib | Operating system libraries |
/lost+found | Recovered data from a damaged filesystem |
/mnt | All "drives" are part of one filesystem |
/opt | Distros put some large packages here, e.g., KDE |
/proc | Virtual; state of each process. |
/root | Root's home directory. |
/sbin | Administration programs/utilities |
/sys | Virtual; device info cf. /proc |
/tmp | For temporary files created by running progs |
/usr | Non-core part of the OS, e.g. user progs, GUI |
/var | Logs, mail queues, print spools. . . |