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 ... /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 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) HIER(7) HIER(7) 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 HIER(7) HIER(7) 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 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 HIER(7) HIER(7) 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) HIER(7) HIER(7) ... 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 HIER(7) HIER(7) 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.