HIER(7) HIER(7)
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)
cat phototypesetter cat(4)
rp* disks, rp, hp(4)
rrp* raw disks, rp, hp(4)
...
/bin/
utility programs, cf /usr/bin/ (1)
as assembler first pass, cf /usr/lib/as2
cc C compiler executive, cf /usr/lib/c[012]
...
/lib/
object libraries and other stuff, cf /usr/lib/
libc.a
system calls, standard I/O, etc. (2,3,3S)
libm.a
math routines (3M)
libplot.a
plotting routines, plot(3)
libF77.a
Fortran runtime support
libI77.a
Fortran I/O
...
as2 second pass of as(1)
c[012]
passes of cc(1)
...
/etc/
essential data and dangerous maintenance utilities
passwd
password file, passwd(5)
group
group file, group(5)
motd message of the day, login(1)
mtab mounted file table, mtab(5)
ddate
dump history, dump(1)
ttys properties of terminals, ttys(5)
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getty
part of login, getty(8)
init the father of all processes, init(8)
rc shell program to bring the system up
cron the clock daemon, cron(8)
mount
mount(1)
wall wall(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
wtmp login history, utmp(5)
messages
hardware error messages
tracct
phototypesetter accounting, troff(1)
vpacct
line printer accounting lpr(1)
/usr /bin
utility programs, to keep /bin/ small
tmp/ temporaries, to keep /tmp/ small
stm* used by sort(1)
raster
used by plot(1)
dict/
word lists, etc.
words
principal word list, used by look(1)
spellhist
history file for spell(1)
games/
bj blackjack
hangman
quiz.k/
what quiz(6) knows
index
category index
africa
countries and capitals
...
...
include/
standard #include files
a.out.h
object file layout, a.out(5)
stdio.h
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standard I/O, stdio(3)
math.h
(3M)
...
sys/ system-defined layouts, cf /usr/sys/h
acct.h
process accounts, acct(5)
buf.h
internal system buffers
...
lib/ object libraries and stuff, to keep /lib/ small
lint[12]
subprocesses for lint(1)
llib-lc
dummy declarations for /lib/libc.a, used by
lint(1)
llib-lm
dummy declarations for /lib/libc.m
atrun
scheduler for at(1)
struct/
passes of struct(1)
...
tmac/
macros for troff(1)
tmac.an
macros for man(7)
tmac.s
macros for ms(7)
...
font/
fonts for troff(1)
R Times Roman
B Times Bold
...
uucp/
programs and data for uucp(1)
L.sys
remote system names and numbers
uucico
the real copy program
...
suftab
table of suffixes for hyphenation, used by
troff(1)
units
conversion tables for units(1)
eign list of English words to be ignored by ptx(1)
/usr/ man/
volume 1 of this manual, man(1)
man0/
general
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intro
introduction to volume 1, ms(7) format
xx template 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)
lock present 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
uucp/
work files and staging area for uucp(1)
LOGFILE
summary log
LOG.*
log file for one transaction
mail/
mailboxes for mail(1)
uid mail file for user uid
lock file while uid is receiving mail
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, typi-
cally in ms(7) format
as/ assembler manual
c C manual
...
sys/ system source
dev/ device drivers
bio.c
common code
cat.c
cat(4)
dh.c DH11, tty(4)
tty tty(4)
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...
conf/
hardware-dependent code
mch.s
assembly language portion
conf configuration generator
...
h/ header (include) files
acct.h
acct(5)
stat.h
stat(2)
...
sys/ source for system proper
main.c
pipe.c
sysent.c
system entry points
...
/usr/ src/
source programs for utilities, etc.
cmd/ source of commands
as/ assembler
makefile
recipe for rebuilding the assembler
as1?.s
source of pass1
ar.c source for ar(1)
...
troff/
source for nroff and troff(1)
nmake
makefile for nroff
tmake
makefile for troff
font/
source for font tables,
/usr/lib/font/
ftR.c
Roman
...
term/
terminal characteristics tables,
/usr/lib/term/
tab300.c
DASI 300
...
...
libc/
source for functions in /lib/libc.a
crt/ C runtime support
ldiv.s
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division into a long
lmul.s
multiplication to produce long
...
csu/ startup and wrapup routines needed with
every C program
crt0.s
regular 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
atof.c
...
compall
shell procedure to compile libc
mklib
shell procedure to make /lib/libc.a
libI77/
source for /lib/libI77
libF77/
...
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.