The root directory

The root directory (/) contains these system directories:

/bin

UNIX command directory

/dev

device special directory

/etc

additional program and data file directory

/lib

C programming library directory

/mnt

mount directory -- reserved for mounted filesystems

/opt

location of shared software storage object files

/shlib

shared libraries

/stand

filesystem containing the kernel and boot files

/tcb

TCB (Trusted Computing Base) security binaries and databases

/tmp

temporary directory (reserved for temporary files created by programs)

/usr

user service routines -- may contain user home directories

/var

location of non-shared software storage object files