.\" $NetBSD: hier.7,v 1.140.6.1 2023/09/04 17:33:28 martin Exp $ .\" .\" Copyright (c) 1990, 1993, 1994 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. Neither the name of the University nor the names of its contributors .\" may be used to endorse or promote products derived from this software .\" without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF .\" SUCH DAMAGE. .\" .\" @(#)hier.7 8.5 (Berkeley) 6/1/94 .\" .Dd May 12, 2020 .Dt HIER 7 .Os .Sh NAME .Nm hier .Nd layout of file systems .Sh DESCRIPTION An outline of the file system hierarchy. .Pp Naming is very important. The .Ux System relies on filename conventions for much of its power as a system. The following file system layout describes generally where things are and what they are, with references to other man pages for more detailed documentation. .Pp Not all files will be in every system. .Bl -tag -width "/altroot/" .It Pa \&/ Root directory of the system. .It Pa /COPYRIGHT System copyright notice, most often put on CD-ROM distributions. .It Pa "/[a-z]/" User file systems. .It Pa /altroot/ Alternate root file system, in case of disaster. .\" .It Pa /amd/ .\" Home directories mount point; see .\" .Xr amd 8 . .It Pa /bin/ Utilities used in both single and multi-user environments. .It Pa /boot* Second-stage boot loader(s) for some platforms; see .Xr installboot 8 . .It Pa /cdrom/ Empty directory commonly used by system administrators as a temporary mount point for ISO-9660 file systems on CD (or DVD) media. .It Pa /dev/ Block, character, and other special device files. .Pp .Bl -tag -width "MAKEDEV" -compact .It Pa MAKEDEV Script for creating device files; see .Xr makedev 8 . .It Pa console The computer's console device. .It Pa drum The computer's swap space device; see .Xr drum 4 . .It Pa fd/ File descriptor files; see .Xr fd 4 . .It Pa klog Kernel logging device; see .Xr syslog 3 . .It Pa kmem Kernel virtual memory device; see .Xr mem 4 . .It Pa log .Ux domain datagram log socket; see .Xr syslogd 8 . .It Pa mem Kernel physical memory device; see .Xr mem 4 . .It Pa null The null device; see .Xr null 4 . .It Pa pts/ Mount point for the pseudo-terminal device file system; see .Xr mount_ptyfs 8 . .It Pa stderr .It Pa stdin .It Pa stdout File descriptor files; see .Xr fd 4 . .It Pa tty Device pointing to each process's own controlling terminal; see .Xr tty 4 . .It Pa zero The zero device; see .Xr zero 4 . .El .\" .It Pa /dump/ .\" Online .\" .Xr dump 8 .\" repository. .It Pa /etc/ System configuration files and scripts. .Pp .Bl -tag -width "master.passwd" -compact .It Pa amd* Configuration files for .Xr amd 8 . .It Pa changelist Files backed up by the .Pa security script. .It Pa crontab Schedule used by the .Xr cron 8 daemon. .It Pa csh.cshrc .It Pa csh.login .It Pa csh.logout System-wide scripts for .Xr csh 1 . .It Pa daily Script run each day by .Xr cron 8 . .It Pa daily.conf Configuration file for .Pa daily ; see .Xr daily.conf 5 . .It Pa defaults/ Default configuration files read by various .Pa /etc/*.conf files. .It Pa disktab Disk description file; see .Xr disktab 5 . .It Pa dm.conf Dungeon master configuration; see .Xr dm.conf 5 . .It Pa dumpdates Dump history; see .Xr dump 8 . .It Pa exports File system export information; see .Xr mountd 8 . .It Pa fstab File system mounting table; see .Xr fstab 5 and .Xr mount 8 . .It Pa ftpusers Users denied .Xr ftp 1 access; see .Xr ftpd 8 . .It Pa ftpwelcome .Xr ftp 1 initial message; see .Xr ftpd 8 . .It Pa gettytab Terminal configuration database; see .Xr gettytab 5 . .It Pa group Group permissions file; see .Xr group 5 . .It Pa hosts Host name database backup for .Xr named 8 ; see .Xr hosts 5 . .It Pa hosts.equiv Trusted machines with equivalent user IDs. (Obsolete.) .It Pa hosts.lpd Trusted machines with printing privileges. .It Pa inetd.conf Internet server configuration file; see .Xr inetd 8 . .It Pa kerberosV/ Configuration files for Kerberos version V; see .Xr kerberos 8 . .It Pa localtime Local time zone; see .Xr ctime 3 . .It Pa login.conf Configuration of user classes and limits; see .Xr login.conf 5 . .It Pa mail/ Configuration files for .Xr sendmail 1 . .Pp .Bl -tag -width "sendmail.*" -compact .It Pa aliases* Username alias files. .It Pa sendmail.* .Xr sendmail 1 configuration information. .El .It Pa mail.rc System-wide initialization script for .Xr mail 1 . .It Pa man.conf Configuration file for .Xr man 1 ; see .Xr man.conf 5 . .It Pa master.passwd Main password file, readable only by root; see .Xr passwd 5 . .It Pa mk.conf Optional file containing .Xr make 1 variables, used to configure pkgsrc and the system sources. .It Pa monthly Script run each month by .Xr cron 8 . .It Pa monthly.conf Configuration file for .Pa monthly ; see .Xr monthly.conf 5 . .It Pa motd System message of the day. .It Pa mtree/ .Xr mtree 8 configuration files. .It Pa named.* .It Pa namedb/ .Xr named 8 configuration files and databases. .It Pa netgroup Network groups; see .Xr netgroup 5 . .It Pa networks Network name database; see .Xr networks 5 . .It Pa openssl/ OpenSSL TLS trust anchors, configuration file, private keys, and more. Returned by .Xr X509_get_default_cert_area 3 . .Bl -tag -width "certs/" -compact .It Pa certs/ Hashed directory of trust anchors for TLS certificate validation. Managed by .Xr certctl 8 according to .Pa certs.conf . See .Xr openssl_rehash 1 . Returned by .Xr X509_get_default_cert_dir 3 . .It Pa certs/ca-certificates.crt Bundle of TLS anchors in PEM format formed by concatenation of PEM-format certificates. Managed by .Xr certctl 8 according to .Pa certs.conf . .It Pa certs.conf Configuration file for .Xr certctl 8 . .It Pa misc/ Miscellaneous OpenSSL scripts. Unused in .Nx base. .It Pa openssl.cnf Optional default OpenSSL configuration file. See .Xr openssl_config 5 . Returned by .Xr CONF_get1_default_config_file 3 . .It Pa private/ Private key area. Read/write/execute permitted only by root. Unused in .Nx base. Returned by .Xr X509_get_default_private_dir 3 . .El .It Pa passwd World readable password file generated from master.passwd; see .Xr passwd 5 , .Xr pwd_mkdb 8 . .It Pa phones Remote host telephone number data base; see .Xr phones 5 . .It Pa printcap Printer configuration for .Xr lpr 1 ; see .Xr printcap 5 . .It Pa profile System-wide scripts for .Xr sh 1 . .It Pa protocols Protocol name database; see .Xr protocols 5 . .It Pa pwd.db Database form of passwd file; see .Xr pwd_mkdb 8 . .It Pa rc Master system startup script invoked by .Xr init 8 ; see .Xr rc 8 . .It Pa rc.conf Configuration file for system startup and shutdown scripts; see .Xr rc.conf 5 . .It Pa rc.d/ Directory containing per-subsystem startup and shutdown scripts; see .Xr rc 8 . .It Pa rc.local Locally editable system startup script. .It Pa rc.shutdown Master system shutdown script invoked by .Xr shutdown 8 ; see .Xr rc 8 . .It Pa remote Remote host description file; see .Xr remote 5 . .It Pa security Daily (in)security script run by .Xr cron 8 . .It Pa security.conf Configuration file for .Pa security ; see .Xr security.conf 5 . .It Pa services Service name data base; see .Xr services 5 . .It Pa shells List of permitted shells; see .Xr shells 5 . .It Pa skel/ Sample initialization files for new user accounts. .It Pa sliphome/ SLIP login/logout scripts; see .Xr sliplogin 8 . .It Pa spwd.db Database form of master.passwd file; see .Xr pwd_mkdb 8 . .It Pa syslog.conf .Xr syslogd 8 Configuration file; see .Xr syslog.conf 5 . .It Pa ttyaction Login hooks for specific ttys, typically used to chown console devices. See .Xr ttyaction 5 . .It Pa ttys Terminal initialization information; see .Xr ttys 5 . .It Pa weekly Script run each week by .Xr cron 8 . .It Pa weekly.conf Configuration file for .Pa weekly ; see .Xr weekly.conf 5 . .El .It Pa /home/ Default location for user home directories. .It Pa /kern/ Mount point for the kern file system; see .Xr mount_kernfs 8 . .It Pa /lib/ Dynamic linked libraries used by dynamically linked programs that cannot rely upon .Pa /usr/lib/ being available, such as those in .Pa /bin/ and .Pa /sbin/ . .It Pa /libdata/ Non-executable files .Pq such as device firmware required at boot time, when .Pa /usr/libdata may not be available. .It Pa /libexec/ System utilities (such as the dynamic linker) required by programs and libraries that cannot rely upon .Pa /usr/libexec/ being available. .It Pa /mnt/ Empty directory commonly used by system administrators as a temporary mount point. .It Pa /net/ automounted NFS shares; see .Xr auto_master 5 .It Pa /netbsd Kernel executable image (the operating system loaded into memory at boot time). .It Pa /proc/ Mount point for the process file system; see .Xr mount_procfs 8 . .It Pa /rescue/ Statically linked rescue tools, for use in system recovery. .It Pa /root/ Home directory for the super-user. .Pp .Bl -tag -width ".profile" -compact .It Pa \&.cshrc Super-user start-up file for .Xr csh 1 . .It Pa \&.login super-user start-up file for .Xr csh 1 . .It Pa \&.profile super-user start-up file for .Xr sh 1 . .It Pa \&.rhosts Super-user id mapping between machines. (Obsolete.) .El .It Pa /sbin/ System programs and administration utilities used in both single-user and multi-user environments. .It Pa /stand/ Programs used in a standalone environment, that is, things that run on bare hardware without a kernel. Currently kernel modules are also placed here, although this remains somewhat controversial and they may yet get moved. .It Pa /tmp/ Temporary files. The contents of .Pa /tmp are usually .Em not preserved across a system reboot. .It Pa /usr/ Contains the majority of the system utilities and files. .Pp .Bl -tag -width "libdata/" -compact .It Pa X11R7/ X11 files (for X11 revision 7). .Pp .Bl -tag -width "include/" -compact .It Pa bin/ X11 binaries. .It Pa include/ X11 include files. .It Pa lib/ X11 libraries. .El .Pp .It Pa bin/ Common utilities, programming tools, and applications. .It Pa games/ The important stuff. .It Pa include/ Standard C (and extension) include files. .Pp .Bl -tag -width "protocols/" -compact .It Pa arpa/ Include files for Internet service protocols. .It Pa atf/ Include files for the Automated Testing Framework; see .Xr atf 7 . .It Pa g++/ Include files for the GNU C++ compiler. .It Pa machine/ Machine specific include files. .It Pa net/ Miscellaneous network include files. .It Pa netatalk/ C include files for AppleTalk protocols see .Xr atalk 4 . .It Pa netinet/ Include files for Internet standard protocols; see .Xr inet 4 . .It Pa netinet6/ Include files for Internet protocol version 6; see .Xr inet6 4 . .It Pa netipsec/ Include files for secret key management, used for security protocols; see .Xr ipsec 4 . .It Pa nfs/ C include files for NFS (Network File System). .It Pa protocols/ C include files for Berkeley service protocols. .It Pa sys/ ``System-level'' C include files. .It Pa ufs/ C include files for several mutually related file systems. (The `u' was originally for .Ux . ) .El .Pp .It Pa lib/ Archive, profiled, position independent archive, and shared libraries. .Pp .Bl -tag -width "lua/" -compact .It Pa lua/ .Bl -tag -width "5.3/" -compact .It Pa 5.3/ Lua 5.3 modules. .El .El .Pp .It Pa libdata/ Miscellaneous utility data files. .It Pa libexec/ System daemons & system utilities (executed by other programs). .Pp .It Pa mdec/ Boot blocks, etc. .It Pa obj/ Architecture-specific target tree produced by building the .Pa /usr/src tree; often a symbolic link or mounted file system. .It Pa pkg/ Installed third-party software packages. .Pp .Bl -tag -width "include/" -compact .It Pa bin/ Package binaries. .It Pa etc/ Package configuration files. .It Pa include/ Package include files. .It Pa lib/ Package libraries. .It Pa libdata/ Package data files. .It Pa libexec/ Package daemons. .It Pa sbin/ Package system utilities. .El .Pp .It Pa pkgsrc/ Build descriptions (packaging) for the .Nx package system. .Pp .Bl -tag -width "distfilesX" -compact .It Pa distfiles/ Downloaded upstream source archives. .It Pa packages/ Compiled binary packages. .El .Pp There are also several other subdirectories which contain packages of a certain category, e.g., archivers, graphics, ... .Pp .It Pa sbin/ System daemons and system utilities (normally executed by the super-user). .It Pa share/ Architecture-independent files, mostly text. .Pp .Bl -tag -width "calendar/" -compact .It Pa calendar/ A variety of calendar files; see .Xr calendar 1 . .It Pa dict/ Word lists; see .Xr look 1 and .Xr spell 1 . .Pp .Bl -tag -width "special/" -compact .It Pa words Common words. .It Pa web2 Words from Webster's Second International Dictionary. .It Pa papers/ Reference databases; see .Xr refer 1 . .It Pa special/ Custom word lists; see .Xr spell 1 . .El .Pp .It Pa doc/ Miscellaneous documentation. .It Pa games/ Data files used by various games. .It Pa i18n/ internationalization databases; see .Xr iconv 3 . .It Pa locale/ Locale databases and gettext message catalogs; see .Xr setlocale 3 and .Xr gettext 3 . .It Pa man/ Manual pages. .It Pa me/ Macros for use with the .Xr me 7 roff macro package. .It Pa misc/ Miscellaneous system-wide text files. .Pp .Bl -tag -width "terminfo.cdb" -compact .It Pa terminfo Terminal characteristics database; see .Xr terminfo 5 . .It Pa terminfo.cdb database form of terminfo file; see .Xr tic 1 . .El .Pp .It Pa mk/ Include files for .Xr make 1 . .It Pa ms/ Macros for use with the .Xr ms 7 roff macro package. .It Pa nls/ Message catalogs; see .Xr catgets 3 . .It Pa tmac/ Text processing macros; see .Xr nroff 1 and .Xr troff 1 . .It Pa zoneinfo/ Time zone database; see .Xr tzfile 5 . .El .It Pa tests/ Test programs; see .Xr tests 7 for information on how to run them. .El .It Pa /usr/src/ .Nx and local source files. .Pp .Bl -tag -width "domestic/" -compact .It Pa bin/ Source for utilities/files in .Pa /bin . .It Pa common/ Sources shared between kernel and userland. .It Pa crypto/ Cryptographic source, which may have import or export restrictions. .It Pa dist/ Third-party .Sq virgin source code, referenced by other parts of the source tree. (Deprecated; use .Pa external/ instead.) .It Pa distrib/ Tools and data files for making .Nx releases and distributions. .It Pa doc/ Documentation about the source tree (i.e., about the tree, not about how to use the software in the tree.) .It Pa etc/ Source (usually example files) for files in .Pa /etc . .It Pa external/ Source for programs from external third parties (where .Nx is the not the primary maintainer), grouped by license, and then products per license. .Pp .Bl -tag -width "intel-fw-public/" -compact .It Pa apache2/ Apache 2.0 license. .It Pa bsd/ BSD (or equivalent) licensed software, possibly with the .Dq advertising clause . .It Pa broadcom/ Broadcom firmware license. .It Pa cddl/ Common Development and Distribution License (the Sun license which is based on the Mozilla Public License version 1.1). .It Pa gpl2/ GNU Public License, version 2 (or earlier). .It Pa gpl3/ GNU Public License, version 3. .It Pa historical/ Lucent's old license. .It Pa ibm-public/ IBM's public license. .It Pa intel-fw-eula/ Intel firmware license with redistribution restricted to OEM. .It Pa intel-fw-public/ Intel firmware license permitting redistribution with terms similar to BSD licensed software. .It Pa intel-public/ Intel license permitting redistribution with terms similar to BSD licensed software. .It Pa lgpl3/ GNU lesser general public license, version 3. .It Pa mit/ MIT (X11) style license. .It Pa mpl/ Mozilla Public License. .It Pa zlib/ BSD-like zlib license. .El .Pp .It Pa games/ Source for utilities/files in .Pa /usr/games . .It Pa include/ Source for files in .Pa /usr/include . .It Pa lib/ Source for libraries in .Pa /usr/lib . .It Pa libexec/ Source for utilities/files in .Pa /usr/libexec . .It Pa regress/ Various legacy regression tests. .It Pa rescue/ Source/makefiles for .Pa /rescue . .It Pa sbin/ Source for utilities/files in .Pa /sbin . .It Pa share/ Source for files in .Pa /usr/share . .Pp .Bl -tag -width "doc/" -compact .It Pa doc/ .Pp .Bl -tag -width "papers/" -compact .It Pa papers/ Source for various historical technical papers (many from Berkeley). .It Pa psd/ Source for Programmer's Supplementary Documents. .It Pa smm/ Source for System Manager's Manual. .It Pa usd/ Source for User's Supplementary Documents. .El .El .It Pa sys/ Kernel source files. .Pp .Bl -tag -width "gdbscripts/" -compact .It Pa arch/ Architecture-specific support. .Pp .Bl -tag -width "playstation2/" -compact .It Pa acorn32/ Acorn RiscPC/A7000 and VLSI RC7500. .It Pa algor/ Algorithmics Ltd. MIPS evaluations boards. .It Pa alpha/ Digital/Compaq Alpha. .It Pa amd64/ Computers with x86_64 capable CPUs. .It Pa amiga/ Commodore Amiga and MacroSystem DraCo. .It Pa amigappc/ PowerPC based Amiga boards. .It Pa arc/ MIPS-based machines following the Advanced RISC Computing spec. .It Pa arm/ ARM processor general support. .It Pa atari/ Atari TT030, Falcon and Hades. .It Pa bebox/ Be Inc. BeBox. .It Pa cats/ Chalice Technology's CATS and Intel's EBSA-285 evaluation boards. .It Pa cesfic/ CES FIC8234 VME processor board. .It Pa cobalt/ Cobalt Networks' MIPS-based Microserver. .It Pa dreamcast/ Sega Dreamcast game console. .It Pa emips/ Machines based on Extensible MIPS. .It Pa evbarm/ ARM based evaluation boards. .It Pa evbmips/ MIPS based evaluation boards. .It Pa evbppc/ PowerPC based evaluation boards and appliances. .It Pa evbsh3/ SH3/SH4 based evaluation boards. .It Pa ews4800mips/ NEC's MIPS based EWS4800 workstations. .It Pa hp300/ Hewlett-Packard 9000/300 and 400 680x0-based workstations. .It Pa hppa/ Hewlett-Packard 9000/700 and 9000/800 HPPA based workstations. .It Pa hpcarm/ StrongARM based WinCE PDA machines. .It Pa hpcmips/ MIPS based WinCE PDA machines. .It Pa hpcsh/ Hitachi SH3/4 based WinCE PDA machines. .It Pa hppa/ HPPA processor general support. .It Pa i386/ 32-bit 80x86-based IBM PCs and clones. .It Pa ibmnws/ IBM Network Station 1000. .It Pa iyonix/ Castle Technology's Iyonix ARM based PCs. .It Pa luna68k/ Omron Tateishi Electric's 680x0-based LUNA workstations. .It Pa m68k/ 680x0 processor general support. .It Pa mac68k/ Apple Macintosh with 68k CPU. .It Pa macppc/ Apple Power Macintosh and clones. .It Pa mips/ MIPS processor general support. .It Pa mipsco/ MIPS Computer Systems Inc. family of workstations and servers. .It Pa mmeye/ Brains Inc. SH3 based mmEye multimedia server. .It Pa mvme68k/ Motorola MVME 680x0-based SBCs. .It Pa mvmeppc/ Motorola PowerPC VME SBCs. .It Pa netwinder/ StrongARM based NetWinder machines. .It Pa news68k/ Sony's 680x0-based NEWS workstations. .It Pa newsmips/ Sony's MIPS-based NEWS workstations. .It Pa next68k/ NeXT 68k "black" hardware. .It Pa ofppc/ Open Firmware PowerPC workstations. .It Pa playstation2/ SONY PlayStation 2. .It Pa pmax/ Digital MIPS-based DECstations and DECsystems. .It Pa powerpc/ PowerPC processor general support. .It Pa prep/ PReP (PowerPC Reference Platform) and CHRP (Common Hardware Reference Platform) machines. .It Pa sandpoint/ Motorola Sandpoint reference platform. .It Pa sbmips/ Broadcom/SiByte evaluation boards. .It Pa sgimips/ Silicon Graphics' MIPS-based workstations. .It Pa sh3/ SH3/SH4 processor general support. .It Pa shark/ Digital DNARD ("Shark"). .It Pa sparc/ Sun Microsystems SPARC (32-bit) and UltraSPARC (in 32-bit mode). .It Pa sparc64/ Sun Microsystems UltraSPARC (in native 64-bit mode). .It Pa sun2/ Sun Microsystems 68010-based Sun 2 architecture. .It Pa sun3/ Sun Microsystems 68020/68030-based Sun 3/3x architecture. .It Pa sun68k/ 680x0-based Sun architecture general support. .It Pa vax/ Digital VAX. .It Pa x68k/ Sharp X680x0 680x0-based workstations. .It Pa x86/ General support for PC/AT compatibles with ia32 or x86_64 CPUs. .It Pa xen/ The Xen virtual machine monitor. .It Pa zaurus/ Sharp C3x00 Arm based PDA. .El .Pp .It Pa compat/ Kernel compatibility modules directory. .Pp .Bl -tag -width "ossaudio/" -compact .It Pa common/ Common compatibility routines, old .Bx 4 and .Nx routines. .It Pa freebsd/ Support for .Fx binaries; see .Xr compat_freebsd 8 . .It Pa hpux/ Support for 68000 HP-UX binaries. .It Pa linux/ Support for Linux binaries; see .Xr compat_linux 8 . .It Pa m68k4k/ Support for 4KB page 68000 binaries. .It Pa netbsd32/ Support for .Nx 32-bit binaries on 64 bit platforms with compatible CPU families. .It Pa ossaudio/ Support for OSS audio. .It Pa sunos/ Support for SunOS 4.x binaries; see .Xr compat_sunos 8 . .It Pa ultrix/ Support for ULTRIX binaries. .It Pa vax1k/ Support for older VAX binaries that started on a 1 KB boundary. .El .Pp .It Pa conf/ Architecture independent configuration directory. .It Pa crypto/ Cryptographic kernel source, which may have import or export restrictions. .It Pa ddb/ In-kernel debugger. .It Pa dev/ Architecture independent device support. .It Pa fs/ File systems. See also .Pa ufs/ and .Pa miscfs/ . .Bl -tag -width "filecorefs/" -compact .It Pa adosfs/ AmigaDOS file-system support; see .Xr mount_ados 8 . .It Pa cd9660/ Support for the ISO-9660 file system; see .Xr mount_cd9660 8 . .It Pa filecorefs/ Support for the Acorn RISC OS filecore file system; see .Xr mount_filecore 8 . .It Pa msdosfs/ MS-DOS file system; see .Xr mount_msdos 8 . .It Pa ntfs/ NTFS file system support; see .Xr mount_ntfs 8 . .It Pa ptyfs/ Pseudo-terminal device file system; see .Xr mount_ptyfs 8 . .It Pa union/ Union file system; see .Xr mount_union 8 . .El .It Pa gdbscripts/ Support for accessing kernel structures from within the debugger .Xr gdb 1 . .Pp .It Pa kern/ Primary kernel source code. .It Pa lib/ Libraries supporting the kernel. .Pp .Bl -tag -width "libkern/" -compact .It Pa libkern/ C library routines used in the kernel. .It Pa libsa/ Machine-independent standalone library, used by boot loaders. .It Pa libz/ Compression library. .El .Pp .It Pa miscfs/ More file systems. .Pp .Bl -tag -width "deadfs/" -compact .It Pa deadfs/ Kernel only dead file system. .It Pa fdesc/ File descriptor file system; see .Xr mount_fdesc 8 . .It Pa fifofs/ POSIX FIFO (named pipe) support. .It Pa genfs/ Generic file system code that supports other file systems. .It Pa kernfs/ Kernel namespace file system; see .Xr mount_kernfs 8 . .It Pa nullfs/ Loop back file system; see .Xr mount_null 8 . .It Pa overlay/ Overlay file system; see .Xr mount_overlay 8 . .It Pa procfs/ Process file system; see .Xr mount_procfs 8 . .It Pa specfs/ Support for block and character special files. .It Pa syncfs/ Kernel trickle sync algorithm. .It Pa umapfs/ User and group re-mapping file system; see .Xr mount_umap 8 . .El .Pp .It Pa net/ Miscellaneous networking support. .It Pa netatalk/ AppleTalk networking support. .It Pa netinet/ IP networking support. .It Pa netinet6/ IPv6 networking support. .It Pa netipsec/ Key database for IPsec networking support. .It Pa nfs/ NFS (network file system) support, both client and server. .It Pa stand/ Kernel standalone support. .It Pa sys/ Kernel (and system) include files. .It Pa ufs/ Still more file systems. .Pp .Bl -tag -width "ffs/" -compact .It Pa chfs/ A FFS-based file system for use on raw flash. .It Pa ext2fs/ The Linux ext2 file system. .It Pa ffs/ The Berkeley Fast File System. .It Pa lfs/ The Berkeley log-structured file system. .It Pa mfs/ The in-memory file system. .It Pa ufs/ Shared .Ux file system support. .El .It Pa uvm/ UVM virtual memory system. .El .It Pa tests/ Source for test programs in .Pa /usr/tests . .It Pa usr.bin/ Source for utilities/files in .Pa /usr/bin . .It Pa usr.sbin/ Source for utilities/files in .Pa /usr/sbin . .El .It Pa /var/ Multi-purpose log, temporary, transient, and spool files. .Pp .Bl -tag -width "preserve/" -compact .It Pa account/ System accounting files. .Pp .Bl -tag -width "acct" -compact .It Pa acct Execution accounting file; see .Xr acct 5 . .El .Pp .It Pa at/ Timed command scheduling files; see .Xr at 1 . .It Pa backups/ Miscellaneous backup files, largely of files found in .Pa /etc . .It Pa chroot/ Home directories of applications which are run in a .Xr chroot 8 .Dq cage . .It Pa crash/ System (kernel) crash dumps; see .Xr savecore 8 . .It Pa cron/ Scheduled commands configuration files; see .Xr cron 8 and .Xr crontab 5 . .It Pa db/ Miscellaneous automatically generated system-specific database files, and persistent files used in the maintenance of third party software. .Pp .Bl -tag -width "monthly.out" -compact .It Pa pkg Default location for metadata related to third party software packages. See .Xr pkg_add 1 for more details of the .Nx Packages Collection, or pkgsrc. .El .Pp .It Pa games/ Miscellaneous game status, log, and high score files. .It Pa heimdal/ Kerberos 5 KDC database; see .Xr kdc 8 . .It Pa log/ Miscellaneous system log files. .Pp .Bl -tag -width "monthly.out" -compact .It Pa amd.* .Xr amd 8 logs. .It Pa daily.out Output of the last run of the .Pa /etc/daily script. .It Pa ftp.* .Xr ftp 1 logs. .It Pa kerberos.* .Xr kerberos 8 logs. .It Pa lastlog System last-time-logged-in database; see .Xr utmp 5 . .It Pa lpd-errs.* Printer daemon error logs; see .Xr lpd 8 . .It Pa maillog.* .Xr sendmail 1 and .Xr postfix 1 (and other mail-related) log files. .It Pa messages.* General system information log. .It Pa monthly.out Output of the last run of the .Pa /etc/monthly script. .It Pa secure Sensitive security information log. .It Pa sendmail.st .Xr sendmail 1 statistics. .It Pa timed.* .Xr timed 8 logs. .It Pa weekly.out Output of the last run of the .Pa /etc/weekly script. .It Pa wtmp Login and logout log; see .Xr utmp 5 . .It Pa wtmpx Another login and logout log; see .Xr utmpx 5 . .El .Pp .It Pa mail/ User e-mail inboxes. .It Pa msgs/ System messages; see .Xr msgs 1 . .\" since we use nvi (now called vi) this isn't the place any more, is it? .It Pa preserve/ Temporary home of files preserved after an accidental death of .Xr ex 1 or .Xr vi 1 . .It Pa quotas/ File system quota information. (Legacy.) .It Pa run/ System information files, rebuilt after each reboot. .Pp .Bl -tag -width "utmp" -compact .It Pa dmesg.boot A dump from .Xr dmesg 8 taken at boot time. .It Pa utmp Database of currently logged in users; see .Xr utmp 5 . .It Pa utmpx Another database of currently logged in users; see .Xr utmpx 5 . .El .Pp .It Pa rwho/ Rwho data files; see .Xr rwhod 8 , .Xr rwho 1 , and .Xr ruptime 1 . .It Pa spool/ Miscellaneous printer and mail system spooling directories. .Pp .Bl -tag -width "postfix/" -compact .It Pa ftp/ Commonly .Dq ~ftp , the anonymous ftp root directory; see .Xr ftpd 8 . .It Pa mqueue/ Sendmail mail queue; see .Xr sendmail 1 . .It Pa news/ Network news archival and spooling directories. .It Pa output/ Printer spooling directories. .It Pa postfix/ Postfix mail queue; see .Xr postfix 1 . .El .Pp .It Pa tmp/ Temporary files that are not discarded between system reboots. .Pp .Bl -tag -width "vi.recover/" -compact .It Pa vi.recover/ Recovery directory for new (current) .Xr vi 1 . .El .Pp .It Pa yp/ Databases and configuration for the NIS (YP) system; see .Xr nis 8 . .El .El .Sh SEE ALSO .Xr apropos 1 , .Xr ls 1 , .Xr whatis 1 , .Xr whereis 1 , .Xr which 1 , .Xr paths 3 .Sh HISTORY A .Nm manual page appeared in .At v7 .