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NAMESPACE(4)									     NAMESPACE(4)

       namespace - structure of conventional file name space


       After  a  user's profile has run, the file name space should adhere to a number of conven-
       tions if the system is to behave normally.  This manual page documents  those  conventions
       by traversing the file hierarchy and describing the points of interest.	It also serves as
       a guide to where things reside in the file system  proper.   The  traversal  is	far  from

       First,  here is the appearance of the file server as it appears before any mounts or bind-

       /      The root directory.

       /adm   The administration directory for the file server.

	      List of users known to the file server; see users(6).

	      Authentication keys for users.

	      SecureNet keys for users; see securenet(8).

	      Directory of timezone files; see ctime(2).

	      Time zone description for Eastern Time.  Other such files  are  in  this	directory

	      Time  zone description for the local time zone; a copy of one of the other files in
	      this directory.








       /tmp   All empty unwritable directories, place holders for mounted services  and  directo-

       /mnt   A directory containing mount points for applications.

       /n     A directory containing mount points for file trees imported from remote systems.





       /mips  Each  CPU  architecture  supported by Plan 9 has a directory in the root containing
	      architecture-specific files, to be selected according to $objtype or $cputype  (see
	      2c(1) and init(8)).  Here we list only those for /mips.

	      The initialization program used during bootstrapping; see init(8).

	      Directory containing binaries for the MIPS architecture.



       etc.   Subdirectories  of /mips/bin containing auxiliary tools and collecting related pro-

	      Directory of object code libraries as used by vl (see 2l(1)).

	      Directory of MIPS-specific C include files.

	      The files in /mips beginning with a 9 are binaries of the operating system.

	      Selected by mk(1) when $objtype is mips, this file configures mk to compile for the
	      MIPS architecture.

       /rc    Isomorphic  to  the  architecture-dependent directories, this holds executables and
	      libraries for the shell, rc(1).

	      Directory of shell executable files.

	      Directory of shell libraries.

	      Startup code for rc(1).

       /lib   Collections of data, generally not parts of programs.

	      The King James edition



       etc.   Databases.

	      The network database used by the networking software; see ndb(6) and ndb(8).

	      The file used by newns (see auth(2)) to  establish  the  default	name  space;  see

	      Bitmap font files.

	      Vector font files.

       /sys   System software.

	      Directory of machine-independent C include files.

	      Directory of ALEF include files.

	      Pieces of programs not easily held in the various bins.

	      Directory of acid(1) load modules.

	      Directory of troff(1) font tables and macros.

	      The yacc(1) parser.

	      The manual.

	      Other system documentation.

	      Log files created by various system services.

	      Top-level directory of system sources.

	      Source to the commands in the bin directories.

	      Source to the operating system for terminals and CPU servers.

	      Source to the operating system for file servers.

	      Source to the libraries.

	      Source for ALEF compilers and libraries.

	      Source for ALEF libraries.

       /mail  Directory of electronic mail; see mail(1).

	      Directory of users' mail box files.

	      Directory of alias files, etc.

       /acme  Directory of tools for acme(1).

       /cron  Directory of files for cron(8).

       The following files and directories are modified in the standard name space, as defined by
       /lib/namespace (see namespace(6)).

       /      The root of the name space.  It is a kernel device, root(3), serving  a  number  of
	      local  mount  points  such as /bin and /dev as well as the bootstrap program /boot.
	      Unioned with / is the root of the main file server.

       /boot  Compiled into the operating system kernel, this file establishes the connection  to
	      the main file server and starts init; see boot(8) and init(8).

       /bin   Mounted  here  is a union directory composed of /$objtype/bin, /rc/bin, $home/$obj-
	      type/bin, etc., so /bin is always the directory containing the appropriate executa-
	      bles for the current architecture.

       /dev   Mounted  here  is  a  union  directory  containing  I/O devices such as the console
	      (cons(3)), the bitmap display (bit(3)), etc.  The window system, 81/2(1),  prefixes
	      this  directory  with  its  own version, overriding many device files with its own,
	      multiplexed simulations of them.

       /env   Mounted here is the environment device, env(3), which holds  environment	variables
	      such as $cputype.

       /net   Mounted here is a union directory formed of all the network devices available.

	      The communications point for the connection server, ndb/cs (see ndb(8)).



	      Directories holding the IP protocol devices (see ip(3)).

	      A directory holding the Datakit protocol devices (see dk(3)).

       /proc  Mounted  here  is  the  process device, proc(3), which provides debugging access to
	      active processes.

       /fd    Mounted here is the dup device,  dup(3),	which  holds  pseudonyms  for  open  file

       /srv   Mounted  here  is  the  service  registry,  srv(3), which holds connections to file

	      The communication channel to the main file server for the machine.

	      Mount point for the window system.

	      Mount point for the terminal's name space as seen by the CPU server after a  cpu(1)

	      A place where machine kremvax's name space may be mounted.

       /tmp   Mounted here is each user's private tmp, $home/tmp.

       intro(1), namespace(6)

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