1 UNIX DIRECTORY
 2                     BIN          Binary files that are essential to UNIX
 3                                  system   programs like UNIX shell.
 4 
 5                     DEV          Contains device special files such as
 6                                  /dev/console, /dev/lp0, /dev/mt0.
 7 
 8                     ETC          Administrative files & programs such as
 9                                  password file, group & init. This directory
10                                  has all the files that deal with
11                                  initializing the terminal process.
12 
13                     LIB          Library files such as C, Pascal & FORTRAN
14                                  library routines.  Library routines can
15                                  also be found in /usr/lib or
16                                  /usr/local/lib.
17     ROOT
18 
19                     UNIX         Has the BOOT image of operating system.
20 
21                     USR          In house system routines.
22                                  USR/BIN had binary files that contain
23                                  system programs written by the site.
24 
25                     USER         The directory for the user him(/her)self.
26                                  Sometimes it is called USR2.
27 
28                     TMP          Contains temporary files which are normally
29                                  erased once a day. USR/TMP also has the
30                                  same job.
31 
32