Layout of Filesystems on Openbsd

man hier
HIER(7)                    OpenBSD Reference Manual                    HIER(7)

     hier - layout of filesystems

     A sketch of the filesystem hierarchy.

     /          Root directory.

     /altroot/  Alternate (backup) location for the root (`/') filesystem (see

     /bin/      User utilities fundamental to both single and multi-user
                environments.  These programs are statically compiled and
                therefore do not depend on any system libraries to run.

     /bsd       Pure kernel executable (the operating system loaded into
                memory at boot-time).

     /    Pure kernel executable for multiprocessor machines.

     /bsd.rd    Installation kernel.  The built-in RAM disk contains utilities
                which can be run without an external file system, so this
                kernel is useful for limited system maintenance too.

     /bsd.sp    Pure kernel executable for single processor machines.

     /dev/      Block and character device files.

                MAKEDEV  Script for creating device files (see MAKEDEV(8)).
                fd/      File descriptor files (see fd(4)).

     /emul/     Base directory for alternate areas searched first when system
                call emulation is in effect.

     /etc/      System configuration files and scripts.

                localtime       Local time zone information (see ctime(3)).
                X11/            Configuration files for the X11 window system.
                amd/            Contains map files for amd(8).
                authpf/         Configuration files for the authenticating
                                gateway user shell (see authpf(8)).
                disklabels/     Backup disklabels (see disklabel(8)).
                firmware/       Firmware files for various devices.
                fonts/          Configuration files for X11 window system
                hotplug/        Scripts for the hotplug daemon, hotplugd(8).
                iked/           Configuration files for iked(8).
                isakmpd/        Configuration files for isakmpd(8).
                kerberosV/      Configuration files for the Kerberos version V
                                subsystem (see kerberos(8)).
                ldap/           Certificates and schema definition files for
                mail/           System mail configuration files.
                mtree/          mtree(8) configuration files.
                nginx/          nginx(8) configuration files.
                npppd/          npppd(8) configuration files.
                ppp/            pppd(8) configuration files.
                raddb/servers/  List of radius servers and their associated
                                shared secrets for login_radius(8).
                rc.d/           packages(7) start/stop scripts and subroutines
                                for rc(8).
                skel/           Example `.' (dot) files for new accounts.
                skey/           One-time password user database for skey(1).
                sliphome/       Configuration files for sliplogin(8).
                ssh/            Configuration files for ssh(1) and sshd(8).
                ssl/            OpenSSL configuration files (see openssl(1)).
                systrace/       Sample systrace(1) policies.

     /home/     Default location for user home directories.

     /mnt/      Empty directory commonly used by system administrators as a
                temporary mount point.

     /root/     Default home directory for the superuser.

     /sbin/     System programs and administration utilities fundamental to
                both single and multi-user environments.  These programs are
                statically compiled and therefore do not depend on any system
                libraries to run.

     /stand/    Programs used in a stand-alone environment.

     /tmp/      Temporary files that are not preserved between system reboots.
                Periodically cleaned by daily(8).

     /usr/      Contains the majority of user utilities and applications.

                X11R6/    Files required for the X11 window system.

                          bin/      X11 binaries.
                          include/  X11-specific C include files.
                          lib/      X11 archive libraries.

                                    X11/        Default configuration files
                                                for X11 and companion
                                    modules/    Various libraries and drivers
                                                for the X11 window system.
                                    pkgconfig/  Package metadata for
                                    xorg/       Data files used by the X

                          man/      X11 manual pages.
                          share/    Architecture independent data files.

                bin/      Common utilities, programming tools, and
                games/    Useful and semi-frivolous programs.
                include/  Standard C include files.

                          altq/       C include files for the altq subsystem
                                      (see pf.conf(5)).
                          arpa/       C include files for Internet service
                          crypto/     C include files for the cryptographic
                          ddb/        C include files for the kernel debugger
                                      (see ddb(4)).
                          dev/        Device-specific C include files.
                          g++/        Include files for the GNU C++ compiler.
                          isofs/      C include files for the ISO standard
                                      file systems (currently only cd9660).
                          kerberosV/  C include files for the KerberosV
                                      authentication subsystem (see
                          libmilter/  C include files for the sendmail(8) mail
                                      filter API.
                          machine/    Machine specific C include files.
                          miscfs/     C include files for miscellaneous file
                          net/        Miscellaneous network C include files.
                          net80211/   C include files for 802.11 wireless
                          netbt/      C include files for the Bluetooth
                          netinet/    C include files for Internet standard
                                      protocols (see inet(4)).
                          netinet6/   C include files for Internet protocol
                                      version 6 (see inet6(4)).
                          netmpls/    C include files for the MPLS protocol.
                          netnatm/    C include files for native mode ATM
                          nfs/        C include files for NFS (Network File
                          objc/       C include files for GNU Objective-C.
                          openssl/    C include files for the OpenSSL library
                                      (see ssl(8)).
                          protocols/  C include files for Berkeley service
                          readline/   C include files for the readline(3)
                          rpc/        C include files for remote procedure
                                      calling (see rpc(5)).
                          rpcsvc/     C include files for rpcsvc.
                          scsi/       SCSI-specific C include files.
                          sys/        System C include files (kernel data
                          ufs/        C include files for UFS (the U-word File
                          uvm/        C include files for the virtual memory
                          xfs/        C include files for the XFS file system.

                lib/      System libraries.  See intro(3) for a description of
                          library types.
                libdata/  Miscellaneous utility data files.

                          cvs/        Placeholder for user contributed cvs(1)
                          ldscripts/  ELF linker scripts.
                          perl5/      Data files for perl(1).

                libexec/  System daemons and utilities (executed by other

                          auth/         Login scripts used to authenticate
                                        users (for BSD authentication).
                          cvs/contrib/  User contributed cvs(1) scripts.
                          lpr/          Contains the lpf filter for lpd(8).
                          sendmail/     Contains the sendmail(8) binary.
                          sm.bin/       Binaries to be run by smrsh(8).
                          smtpd/        Binaries related to smtpd(8).

                lkm/      Loadable kernel modules.
                local/    Local executables, libraries, etc.
                mdec/     Boot-related executables.
                obj/      Architecture specific target tree produced by
                          building the /usr/src tree.
                ports/    The OpenBSD ports collection (see ports(7)).
                sbin/     System daemons and utilities (executed by users).
                share/    Architecture independent data files.

                          calendar/  Variety of pre-fab calendar files (see
                          dict/      Word lists (see look(1) and spell(1)).

                                     american     Spellings preferred in
                                                  American usage.
                                     british      Spellings preferred in
                                                  British usage.
                                     eign         List of common words.
                                     propernames  List of proper names.
                                     stop         Forms that would otherwise
                                                  be derivable by spell(1)
                                                  from words in the other
                                                  files in /usr/share/dict,
                                                  but should not be accepted.
                                     web2         Words from Webster's 2nd
                                     web2a        Additional words from
                                     words        Common words.
                                     papers/      Reference databases.
                                     special/     Custom word lists.

                          doc/       Miscellaneous documentation.

                                     html/  HTML documentation.
                                     mg/    Tutorial for the mg(1) editor.

                          games/     ASCII text files used by various games.
                          info/      Texinfo source files.
                          lkm/       Example source code implementing several
                                     lkm module types (see lkm(4)).
                          locale/    Locales for multi-language support.
                          man/       Manual pages.

                                     man1/   General commands (tools and
                                     man2/   System calls and error numbers.
                                     man3/   Libraries.
                                     man3p/  perl(1) programmers' reference
                                     man4/   Special files and hardware
                                     man5/   File formats.
                                     man6/   Games.
                                     man7/   Miscellaneous.
                                     man8/   System maintenance and operation
                                     man9/   Kernel internals.

                          misc/      Miscellaneous system-wide ASCII text

                                     termcap      Terminal characteristics
                                                  database (see termcap(5)).
                                     termcap.db   Hash database file
                                                  containing terminal
                                                  descriptions (see
                                     terminfo.db  Terminal information
                                     pcvtfonts/   Additional i386 console

                          mk/        Templates for make (see make(1)).
                          nls/       National Language Support (NLS) catalogs.
                          sendmail/  Example files for sendmail(8).
                          snmp/      Data files for snmpd(8).

                                     mibs/  Management Information Base (MIB)

                          tabset/    Tab description files for a variety of
                                     terminals; used in the termcap file (see
                          texinfo/   Templates for texinfo(5).
                                     Catalog files for the vi(1) text editor.
                          zoneinfo/  Time zone configuration information (see

                src/      BSD and/or local source files.

                          bin/        Source for files in /bin.
                          distrib/    Source for making distribution sets.
                          etc/        Source for files in /etc.
                          games/      Source for files in /usr/games.
                          gnu/        Source for files under GPL or other
                                      restrictive licenses.
                          include/    Source for files in /usr/include.
                          kerberosV/  Source for Kerberos version V.
                          lib/        Source for files in /usr/lib.
                          libexec/    Source for files in /usr/libexec.
                          regress/    Regress framework.
                          sbin/       Source for files in /sbin.
                          share/      Source for files in /usr/share.
                          sys/        Kernel source files.
                          usr.bin/    Source for files in /usr/bin.
                          usr.sbin/   Source for files in /usr/sbin.

                          Source for the X11 window system.

                xobj/     Architecture specific target tree produced by
                          building the /usr/xenocara tree.

     /var/      Multi-purpose log, temporary, transient, and spool files.

                account/   System accounting files.

                           acct        Execution accounting file (see

                audit/     Audit logs.
                authpf/    PID file for authpf(8).
                backups/   Miscellaneous backup files.
                cache/     Data cached for programs.
                crash/     Crash dumps written by savecore(8).
                cron/      Spools and configuration files for cron(8) and

                           atjobs/     at(1) jobs.
                           tabs/       Individual crontab(1) files.

                db/        Miscellaneous, automatically generated system-
                           specific database files.
                empty/     Generic chroot(2) directory.
                games/     Miscellaneous game status and log files.
                kerberosV  Kerberos database, key and ACL files (see
                log/       Miscellaneous system log files.

                           wtmp        Login/logout log (see wtmp(5)).
                           rdist/      Log files for rdist(1).

                mail/      User mailbox files.
                named/     Chroot directory for named(8).
                nsd/       Database and zone files for nsd(8).
                quotas/    Filesystem quota information files.
                run/       System information files describing various info
                           about the system since it was booted.

                           utmp        Database of current users (see
                           sudo/       Timestamps for sudo(8).

                rwho/      rwho data files (see rwhod(8), rwho(1), and
                spool/     Miscellaneous printer and mail system spooling

                           clientmqueue/  Mail messages waiting to be
                                          processed by the sendmail
                                          clientmqueue helper task (see
                           ftp/           Commonly ~ftp; the anonymous ftp
                                          root directory.
                           lock/          Lock files for utilities such as
                                          cu(1), tip(1) and uucp.
                           mqueue/        Undelivered mail queue (see
                           output/        Line printer spooling directories.
                           smtpd/         Mail spool for smtpd(8).
                           uucp/          uucp spool directory.
                           uucppublic/    Commonly ~uucp; public uucp
                                          temporary directory.

                tmp/       Temporary files that are kept between system
                           reboots.  Periodically cleaned by daily(8).
                www/       ServerRoot point for httpd(8).
                yp/        Files for the yp(8) subsystem.

     apropos(1), find(1), locate(1), whatis(1), whereis(1), which(1)

     A hier manual page appeared in Version 7 AT&T UNIX.

OpenBSD 5.4                      July 10, 2013                     OpenBSD 5.4