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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)
              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
                            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
                            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
                     uid.lock
                            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, typically 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)
                            ...
                     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 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.



                                                                       HIER(7)