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hier(7) Miscellaneous Information Manual hier(7) Name hier - file system hierarchy Description The following is a brief description of the root file system. The ma- jor directory hierarchy and representative files are listed. Symbolic links can be included in the files to provide backward compat- ibility. To display the links, type: % ls -l See the Guide to Disk Maintenance for more detailed information. / Directory for root file system. This file system is separated into nonsharable data, (root (/)) and sharable data, (/usr). These two file systems are each divided into the following types: static data, variable data, and executable data. /bin Directory for the single user executable data files. /bin/init Parent of all processes, /bin/mount Mount program, /dev Directory for devices. MAKEDEV Shell script to create special files MAKEDEV.local Site-specific part of MAKEDEV console Main console, rz SCSI disks, rrz* Raw SCSI disks, rmt* Tapes mrmt* Tapes tty* Terminals, . . . /etc Directory for the machine-specific static data files and shell scripts for booting. crontab System clock daemon table, disktab Disk characteristics and partition tables, fstab File system configuration table, group Group file, hosts Host name-to-network address mapping file, motd Message-of-the-day file, networks Network name-to-network number mapping file, passwd Password file, protocols Name-to-number mapping file, rc Shell script to bring the system to multiuser mode rc.local Site-dependent portion of rc remote Names and description of remote hosts for and services Network services definition file, termcap Description of terminal capabilities, ttys Properties of terminals, . . . /lib Symbolic link to /lost+found Directory for connecting detached files for /sys Symbolic link, normally to /tmp Directory for temporary files (see also e* Used by ctm* Used by . . . /usr General purpose directory, on which the file system is normally mounted (see description that follows). /var Directory for variable length files, such as spool, administra- tive, and temporary files. These files can also be located in See the Guide to Disk Maintenance. /vmunix Kernel image The directory contains the sharable data. The following is a brief de- scription of the file system. The major directory hierarchy and repre- sentative files are listed. /usr Root directory for file system. /usr/adm Directory for administrative information, which is now a sym- bolic link to crash Directory for crash dumps vmcore.?,vmunix.? Crash dump files lpacct Line printer accounting, tracct Phototypesetter accounting, wtmp Login history, . . . /usr/bin Directory for the shared executable data files, including utility programs and Shell scripts. as assembler cc C compiler executive (see also and csh C shell . . . /usr/dict Directory for word lists. spellhist History file, words Word list, . . . /usr/doc Directories containing files for the Vol.2 documentation. as Assembler manual c C manual . . . /usr/etc Directory for utility programs and shell scripts. /usr/etc/cron Clock daemon, /usr/etc/dump Dump program, /usr/examples A directory where components of the base system and Digital's separately licensed products can locate code examples, scripts, and demos for customers to use. A typical use is to complement printed documentation. /usr/games Directory for games. hangman Hangman game lib Library directory for games . . . /usr/etc/getty Part of login, /usr/include Directory for standard #include files. a.out.h Object file layout, math.h stdio.h Standard I/O, sys Symbolic link to (system generation #include files) . . . /usr/lib Directory for the shared static data files, such as object libraries. atrun System scheduler, cpp C preprocessor libc.a System calls and standard I/O (2,3,3S) font Directory for fonts lint Directory for utility files for tmac Directory for macros units Data file of conversion tables for uucp Directory for programs and data . . . /usr/man Directory for unformatted and preformatted reference (manual) pages. cat1 Section 1 (preformatted) cat2 Section 2 (preformatted) cat3 Section 3 (preformatted) . . . man1 Section 1 (unformatted) man2 Section 2 (unformatted) man3 Section 3 (unformatted) . . . /usr/mdec Directory for ULTRIX boot files. /usr/msgs Directory for messages, /usr/new Directory for binaries of new versions of programs. /usr/preserve Directory for editor files preserved after crashes or hangups. /usr/skel Directory for sample user startup files. .cshrc Startup file for .login Login startup file for .mailrc Startup file for .profile Startup file for .project Lists information used by /usr/spool Directory for delayed execution files, which is now a sym- bolic link to at Directory used by lpd Directory used by lock Present when line printer is active cf* Copy of file to be printed, if necessary df* Daemon control file, tf* Transient control file (exists while is work- ing) mail Mailboxes for name Mail file for user name name.lock Lock file (exists while name is re- ceiving mail) uucp Work files and staging area for LOGFILE Summary log /usr/src Generic sources. usr.bin User sources troff and sources term Directory of description files for new printers /usr/sys Directory for system files. b.mips BINARY for MIPS b.vax BINARY for VAX fs Filesystem SRC net Netword SRC mips MIPS-specific SRC vax VAX-specific SRC data System data files conf/{mips,vax} Configuration files h #include files SAS Standalone system sys Machine independent SRC /usr/tmp Symbolic link to See Also apropos(1), find(1), finger(1), grep(1), ls(1), whatis(1), whereis(1), which(1), ncheck(8) Guide to Disk Maintenance RISC hier(7)
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