NAME

hier − file system hierarchy

DESCRIPTION

The following outline gives a quick tour through a representative directory hierarchy. 

/root

/dev/devices (4)

console
main console, tty(4)

tty*terminals, tty(4)

catphototypesetter cat(4)

rp*disks, rp, hp(4)

rrp*raw disks, rp, hp(4)

...

/bin/utility programs, cf /usr/bin/ (1)

asassembler

ccC compiler executive, cf /lib/ccom, /lib/cpp, /lib/c2

...

/lib/object libraries and other stuff, cf /usr/lib/

libc.asystem calls, standard I/O, etc. (2,3,3S)

...

ccomC compiler proper

cppC preprocessor

c2C code improver

...

/etc/essential data and dangerous maintenance utilities

passwd
password file, passwd(5)

groupgroup file, group(5)

motdmessage of the day, login(1)

mtabmounted file table, mtab(5)

ddatedump history, dump(1)

ttysproperties of terminals, ttys(5)

gettypart of login, getty(8)

initthe father of all processes, init(8)

rcshell program to bring the system up

cronthe clock daemon, cron(8)

mountmount(1)

wallwall(1)

...

/tmp/temporary files, usually on a fast device, cf /usr/tmp/

e*used by ed(1)

ctm*used by cc(1)

...

/usr/general-pupose directory, usually a mounted file system

adm/administrative information

wtmplogin history, utmp(5)

messages
hardware error messages

tracctphototypesetter accounting, troff(1)

vpacctline printer accounting lpr(1)

/usr/bin

utility programs, to keep /bin/ small

tmp/temporaries, to keep /tmp/ small

stm*used by sort(1)

rasterused by plot(1)

dict/word lists, etc. 

wordsprincipal word list, used by look(1)

spellhist
history file for spell(1)

games/

hangman

quiz.k/
what quiz(6) knows

indexcategory index

africacountries and capitals

...

...

include/
standard #include files

a.out.h
object file layout, a.out(5)

stdio.hstandard I/O, stdio(3)

math.h
(3M)

...

sys/system-defined layouts, cf /usr/sys/h

acct.hprocess accounts, acct(5)

buf.hinternal system buffers

...

lib/object libraries and stuff, to keep /lib/ small

libm.amath routines (3M)

libplot.a
plotting routines, plot(3)

libF77.a
Fortran runtime support

libI77.a
Fortran I/O

lint[12]
subprocesses for lint(1)

llib-lcdummy declarations for /lib/libc.a, used by lint(1)

llib-lmdummy declarations for /lib/libc.m

atrunscheduler for at(1)

struct/
passes of struct(1)

...

tmac/macros for troff(1)

tmac.an
macros for man(7)

tmac.smacros for ms(7)

...

font/fonts for troff(1)

ftRTimes Roman

ftBTimes Bold

...

uucp/programs and data for uucp(1)

L.sysremote system names and numbers

uucicothe real copy program

...

unitsconversion tables for units(1)

eignlist of English words to be ignored by ptx(1)

/usr/man/

volume 1 of this manual, man(1)

man0/general

introintroduction to volume 1, ms(7) format

xxtemplate for manual page

man1/chapter 1

as.1

mount.1m

...

cat1/preprinted pages for man1/

as.1

mount.1m

...

spool/delayed execution files

at/used by at(1)

lpd/used by lpr(1)

lockpresent when line printer is active

cf*copy of file to be printed, if necessary

df*daemon control file, lpd(8)

tf*transient control file, while lpr is working

mail/mailboxes for mail(1)

uid mail file for user uid

uid.lock
lock file while uid is receiving mail

secretmail/
like mail/

uucp/work files and staging area for uucp(1)

LOGFILE
summary log

LOG.*log file for one transaction

wd initial working directory of a user, typically wd is the user’s login name

.profile
set environment for sh(1), environ(5)

calendar
user’s datebook for calendar(1)

doc/papers, mostly in volume 2 of this manual, typically in ms(7) format

cC manual

...

/usr/src/

source programs for utilities, etc. 

cmd/source of commands

as/assembler

ar.csource for ar(1)

...

troff/source for nroff and troff(1)

font/source for font tables, /usr/lib/font/

ftR.cRoman

...

term/terminal characteristics tables, /usr/lib/term/

tab300.c
DASI 300

...

...

libc/source for functions in /lib/libc.a

crt/C runtime support

csu/startup and wrapup routines needed with every C program

crt0.sregular startup

mcrt0.s
modified startup for cc −p

sys/system calls (2)

access.s

alarm.s

...

stdio/standard I/O functions (3S)

fgets.c

fopen.c

...

gen/other functions in (3)

abs.c

...

compall
shell procedure to compile libc

mklibshell procedure to make /lib/libc.a

libI77/
source for /lib/libI77

libF77/

sys/system source

h/header (include) files

acct.hacct(5)

stat.hstat(2)

...

sys/source for system proper

main.c

pipe.c

sysent.c
system entry points

...

...

games/
source for /usr/games

SEE ALSO

ls(1), ncheck(1), find(1), grep(1)

BUGS

The position of files is subject to change without notice. 

7th Edition  —  UNIX/32V