namespace – structure of conventional file name space|
After a user's profile has run, the file name space should adhere
to a number of conventions 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 exhaustive.
/ The root directory.
/adm The administration directory for the file server.
/adm/users List of users known to the file server; see users(6).
/adm/keys Authentication keys for users.
/adm/netkeys SecureNet keys for users; see securenet(8).
/adm/timezoneDirectory of timezone files; see ctime(2).
/tmp All empty unwritable directories, place holders for mounted services and directories.
/mnt A directory containing mount points for applications.
/n A directory containing mount points for file trees imported from remote systems.
/sparc 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 8c(1) and init(8)). Here we list only those for /386.
/386/init The initialization program used during bootstrapping; see init(8).
/386/bin Directory containing binaries for the Intel x86 architecture.
etc. Subdirectories of /386/bin containing auxiliary tools and collecting related programs.
/386/lib Directory of object code libraries as used by 8l (see 8l(1)).
/386/include Directory of x86–specific C include files.
/386/9* The files in /386 beginning with a 9 are binaries of the operating system or its bootstrap loader.
/386/mkfile Selected by mk(1) when $objtype is 386, this file configures mk to compile for the Intel x86 architecture.
/rc Isomorphic to the architecture–dependent directories, this holds executables and libraries for the shell, rc(1).
/rc/bin Directory of shell executable files.
/rc/lib Directory of shell libraries.
/lib/ndb The network database used by the networking software; see ndb(6) and ndb(8).
/sys/include Directory of machine–independent C include files.
/sys/lib Pieces of programs not easily held in the various bins.
/sys/lib/acidDirectory of acid(1) load modules.
/sys/lib/distSoftware used to assemble the distribution's installation floppy.
/sys/doc Other system documentation.
/sys/log Log files created by various system services.
/sys/src Top–level directory of system sources.
/sys/src/cmd Source to the commands in the bin directories.
/sys/src/9 Source to the operating system for terminals and CPU servers.
/sys/src/fs Source to the operating system for file servers.
/sys/src/lib*Source to the libraries.
/usr A directory containing home directories of users.
/mail Directory of electronic mail; see mail(1).
/mail/box Directory of users' mail box files.
/mail/lib Directory of alias files, etc.
/acme Directory of tools for acme(1).
/cron Directory of files for cron(8).
/cfg/systemSystem–specific files, often addenda to their namesakes, notably cpurc, termrc, namespace, and consoledb.
/ The root of the name space. It is a kernel device, root(3), serving a number of local mount points such as /bin and /dev as well as the bootstrap program /boot. Unioned with / is the root of the main file server.
/boot Compiled into the operating system kernel, this file establishes the connection to the main file server and starts init; see boot(8) and init(8).
/bin Mounted here is a union directory composed of /$objtype/bin, /rc/bin, $home/$objtype/bin, etc., so /bin is always the directory containing the appropriate executables for the current architecture.
/dev Mounted here is a union directory containing I/O devices such as the console (cons(3)), the interface to the raster display (draw(3)), etc. The window system, rio(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.
/net/cs The communications point for the connection server, ndb/cs (see ndb(8)).
/net/dns The communications point for the Domain Name Server, ndb/dns (see ndb(8)).
/net/udp Directories holding the IP protocol devices (see ip(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 descriptors.
/srv Mounted here is the service registry, srv(3), which holds connections to file servers.
/srv/boot The communication channel to the main file server for the machine.
/mnt/factotumMount point for factotum(4).
/mnt/wsys Mount point for the window system.
/mnt/term Mount point for the terminal's name space as seen by the CPU server after a cpu(1) command.
/n/kremvax A place where machine kremvax's name space may be mounted.
/tmp Mounted here is each user's private tmp, $home/tmp.