1.\"- 2.\" SPDX-License-Identifier: BSD-3-Clause 3.\" 4.\" Copyright (c) 1990, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.Dd February 27, 2024 32.Dt HIER 7 33.Os 34.Sh NAME 35.Nm hier 36.Nd layout of 37.Fx 38file system hierarchy 39.Sh DESCRIPTION 40.Bl -tag -width "/libexec/" 41.It Pa / 42root directory of the file system 43.It Pa /COPYRIGHT 44.Fx 45copyright information 46.It Pa /bin/ 47user utilities fundamental to both single and multi-user modes 48.It Pa /boot/ 49programs and configurations used during 50.Fx 51bootstrap 52.Pp 53.Bl -tag -width "loader.conf.d/" -compact 54.It Pa defaults/ 55default bootstrap configuration files; see 56.Xr loader.conf 5 57.It Pa device.hints 58kernel variables for controlling drivers; see 59.Xr device.hints 5 60.It Pa dtb/ 61compiled flattened device tree (FDT) files; see 62.Xr fdt 4 63and 64.Xr dtc 1 65.Pp 66.Bl -tag -width "overlays/" -compact 67.It Pa overlays/ 68compiled flattened device tree (FDT) overlays; these can be applied using the 69.Va fdt_overlays 70setting in 71.Xr loader.conf 5 72.El 73.Pp 74.It Pa efi/ 75mount point for EFI System Partition (ESP) on UEFI systems 76.It Pa firmware/ 77loadable binary firmware kernel modules 78.It Pa fonts/ 79binary bitmap console fonts; see 80.Xr loader.conf 5 81and 82.Xr vtfontcvt 8 83.It Pa images/ 84beastie boot menu images; see 85.Xr loader_lua 8 86.It Pa kernel/ 87pure kernel executable 88.Pq the operating system loaded into memory at boot time 89and kernel modules; see 90.Xr kldstat 8 91.It Pa kernel.old/ 92alternative kernel and modules 93.It Pa loader.conf 94boot loader configuration; see 95.Xr loader.conf 5 96.It Pa loader.conf.d/ 97.Xr loader.conf 5 98configuration files 99.It Pa lua/ 100scripts for kernel bootstrapping final stage; see 101.Xr loader_lua 8 102.It Pa modules/ 103third-party loadable kernel modules, such as those installed with 104.Xr pkg 8 105or from 106.Xr ports 7 107.It Pa zfs/ 108ZFS 109.Xr zpool 8 110cache files 111.El 112.It Pa /compat/ 113files supporting binary compatibility with other operating systems 114.Pp 115.Bl -tag -width "loader.conf.d" -compact 116.It Pa linux/ 117default location for 118.Xr linux 4 119compatibility run-time 120.El 121.It Pa /dev/ 122device special files managed by 123.Xr devfs 5 124.Pp 125.Bl -tag -width "loader.conf.d" -compact 126.It Pa ada0 127first ATA storage device 128.It Pa ada0p1 129first partition on ada0 130.It Pa cd0 131first optical drive 132.It Pa da0 133first SCSI storage device 134.It Pa da0s1 135first partition on da0 136.It Pa dri/ 137GPU character device node; see 138.Xr drm 7 139.It Pa drm/ 140GPU 141.Xr drm 7 142special files 143.It Pa fd/ 144file descriptor files; see 145.Xr fd 4 146.It Pa fd0 147first floppy drive 148.It Pa mmcsd0 149first SD storage device 150.It Pa mmcsd0s1 151first partition on mmcsd0 152.It Pa nda0 153first NVMe storage device attached via 154.Xr cam 3 155.It Pa null 156infinite loop that accepts anything and contains nothing 157.It Pa nvd0 158first NVMe storage device using NVMe namespaces 159.It Pa pts/ 160pseduo-terminals 161.It Pa random 162source of weak randomness; see 163.Xr random 4 164.It Pa sa0 165first tape drive 166.It Pa usb/ 167USB busses 168.El 169.It Pa /entropy 170provides initial state to RNG; see 171.Xr save-entropy 8 172.It Pa /etc/ 173system wide configuration files and scripts 174.Pp 175.Bl -tag -width "freebsd-update.conf" -compact 176.It Pa auto_master 177autofs 178.Xr automount 8 179configuration 180.It Pa bluetooth/ 181bluetooth configuration files 182.It Pa cron.d/ 183tables for driving scheduled tasks; see 184.Xr crontab 5 185.It Pa crontab 186root's cron table 187.It Pa defaults/ 188default system configuration files; see 189.Xr rc 8 190.It Pa devd/ 191configuration for 192.Xr devd 8 , 193the device state change daemon 194.It Pa devfs.conf 195boot time device configuration 196.It Pa dma/ 197configuration for 198.Xr dma 8 199.It Pa freebsd-update.conf 200configuration for the base system updater 201.Xr freebsd-update 8 202.It Pa fstab 203static filesystem configuration; see 204.Xr fstab 5 205.It Pa hosts 206database of local hosts if no network name server is running 207.It Pa inetd.conf 208configuration for 209.Bx 210heritage internet servers; see 211.Xr inetd 8 212.It Pa localtime 213local timezone information; see 214.Xr ctime 3 215.It Pa jail.conf.d/ 216.Xr jail 8 217startup scripts. 218.It Pa login.conf 219login class capability database; see 220.Xr login.conf 5 221.It Pa machine-id 222defines the UUID for the local system, required for dbus 223.It Pa mail/ 224.Xr sendmail 8 225control files 226.Pp 227.Bl -tag -width "mailer.conf" -compact 228.It Pa aliases 229addresses to deliver system mail 230.It Pa mailer.conf 231.Xr mailwrapper 8 232configuration 233.El 234.Pp 235.It Pa motd.template 236message displayed upon tty login; see 237.Xr motd 5 238.It Pa mtree/ 239system mapper specification; see 240.Xr mtree 8 241.It Pa newsyslog.conf.d/ 242log rotation configuration files. 243.It Pa ntp/ 244stored time for the Network Time Protocol 245.It Pa ntp.conf 246configuration for the NTP client, 247.Xr ntpd 8 248.It Pa pam.d/ 249configuration files for the Pluggable Authentication Modules (PAM) library; 250see 251.Xr pam 3 252.It Pa periodic/ 253scripts that are run daily, weekly, or monthly by 254.Xr cron 8 ; 255see 256.Xr periodic 8 257.It Pa pf.conf 258configuration for the Packet Filter firewall; see 259.Xr pf 4 260.It Pa pkg/ 261default configuration for the package manager, 262.Xr pkg 8 263.It Pa ppp/ 264PPP configuration files; see 265.Xr ppp 8 266.It Pa rc.conf 267system and daemon configuration; see 268.Xr rc.conf 5 269.It Pa rc.d/ 270system and daemon startup/control scripts; see 271.Xr rc 8 272.It Pa resolv.conf 273DNS configuration; see 274.Xr resolv.conf 5 275.It Pa resolvconf.conf 276DNS configuration manager configuration, often generated by 277local-unbound; see 278.Xr local_unbound 8 279or 280.Xr resolvconf 8 281.It Pa security/ 282OpenBSM audit configuration files; see 283.Xr audit 8 284.It Pa ssh/ 285OpenSSH configuration files; see 286.Xr ssh 1 287.It Pa ssl/ 288OpenSSL configuration files 289.It Pa sysctl.conf 290kernel state defaults; see 291.Xr sysctl.conf 5 292.It Pa syslog.conf 293system log configuration 294.It Pa ttys 295tty creation configuration; see 296.Xr getty 8 297.It Pa wpa_supplicant.conf 298client wifi configuration; see 299.Xr wpa_supplicant.conf 5 300.El 301.It Pa /home/ 302home directories for users; the typical home for an interactive user 303.Dv beastie 304would be 305.Pa /home/beastie/ 306.It Pa /lib/ 307system libraries that are critical to binaries in 308.Pa /bin 309and 310.Pa /sbin 311.Pp 312.Bl -tag -width "nvmecontrol/" -compact 313.It Pa geom/ 314class-specific libraries for the 315.Xr geom 8 316utility 317.It Pa nvmecontrol/ 318vendor-specific libraries to extend the 319.Xr nvmecontrol 8 320utility 321.El 322.It Pa /libexec/ 323system utilities that are critical to binaries in 324.Pa /bin 325and 326.Pa /sbin 327.It Pa /media/ 328mount points for removable storage media such as CDs, DVDs, 329and USB drives; see 330.Xr automount 8 331or 332.Xr bsdisks 8 333.It Pa /mnt/ 334empty directory commonly used by 335system administrators as a temporary mount point 336.It Pa /net/ 337automounted NFS shares; see 338.Xr auto_master 5 339.It Pa /nonexistent/ 340a non-existent directory; 341by convention, it serves as a home directory 342for special user accounts 343that need no home directory; see also 344.Pa /var/empty/ 345.It Pa /proc/ 346process file system; see 347.Xr procfs 5 348.It Pa /rescue/ 349statically linked programs for emergency recovery; see 350.Xr rescue 8 351.It Pa /root/ 352home directory of the root user 353.It Pa /sbin/ 354system programs and administration utilities 355fundamental to both single and multi-user modes 356.It Pa /tmp/ 357temporary files that may be removed by 358.Xr rc 8 ; 359see the 360.Va clear_tmp_enable 361variable of 362.Xr rc.conf 5 363.It Pa /usr/ 364contains the majority of user utilities and applications 365.Pp 366.Bl -tag -width "freebsd-dist/" -compact 367.It Pa bin/ 368common utilities, programming tools, and applications 369.It Pa freebsd-dist/ 370distribution files 371.Pq like base.txz ; see 372.Xr release 7 373and 374.Xr bsdinstall 8 375.It Pa include/ 376standard C include header files 377.It Pa lib/ 378shared and archive 379.Xr ar 1 Ns -type 380libraries 381.Pp 382.Bl -tag -width Fl -compact 383.It Pa clang/ 384shared libraries for the system compiler, 385.Xr clang 1 386.It Pa compat/ 387shared libraries for compatibility 388.It Pa debug/ 389standalone debug data for the kernel and base system libraries and binaries 390.It Pa dtrace/ 391DTrace library scripts 392.It Pa engines/ 393OpenSSL 394.Pq Cryptography/SSL toolkit 395dynamically loadable engines 396.It Pa flua/ 397.Fx 398Lua shared libraries 399.It Pa i18n/ 400shared libraries for internationalization 401.El 402.Pp 403.It Pa lib32/ 40432-bit comparability libraries 405.It Pa libdata/ 406miscellaneous utility data files 407.Pp 408.Bl -tag -width Fl -compact 409.It Pa gcc/ 410GCC configuration data 411.It Pa ldscripts/ 412linker scripts; see 413.Xr ld 1 414.It Pa pkgconfig/ 415collections of compiler and linker flags for the 416.Xr pkgconf 1 417development tool 418.El 419.It Pa libexec/ 420system daemons and utilities that are executed by other programs 421.Pp 422.Bl -tag -width "bsdinstall/" -compact 423.It Pa bsdconfig/ 424utilities called by the ncurses 425.Fx 426configuration wizard 427.It Pa bsdinstall/ 428utilities for 429.Xr bsdinstall 8 430.It Pa dwatch/ 431profiles for 432.Xr dwatch 1 433.It Pa fwget/ 434utilities called by 435.Xr fwget 8 436.It Pa hyperv/ 437??? 438.It Pa lpr/ 439utilities and filters for the line printer system; see 440.Xr lpr 1 441.It Pa sendmail/ 442the 443.Xr sendmail 8 444binary; see 445.Xr mailwrapper 8 446.It Pa sm.bin/ 447restricted shell for 448.Xr sendmail 8 ; 449see 450.Xr smrsh 8 451.It Pa zfs/ 452Z file system utilities 453.El 454.Pp 455.It Pa local/ 456default destination for local executables, libraries, etc, installed by 457.Xr pkg 7 458or 459.Xr ports 7 460.Pp 461within 462.Pa local/ , 463the general layout sketched out by 464.Nm 465for 466.Pa /usr 467should be used ; exceptions are the ports documentation 468.Po in 469.Pa share/doc/<port>/ Ns Pc , 470and 471.Pa /usr/local/etc 472.Po mimics 473.Pa /etc Ns Pc 474.Pp 475.Bl -tag -width Fl -compact 476.It Pa share/doc/freebsd/ 477articles, books, FAQ, and handbooks available from the 478.Fx 479project 480.El 481.Pp 482.It Pa obj/ 483architecture-specific target tree produced by building 484.Fx 485from source; see 486.Xr build 7 487.It Pa ports/ 488.Fx 489ports collection; see 490.Xr ports 7 491.It Pa sbin/ 492system daemons and utilities meant for user execution 493.It Pa share/ 494architecture-independent files 495.Pp 496.Bl -tag -width Fl -compact 497.It Pa calendar/ 498a variety of pre-fab calendar files; see 499.Xr calendar 1 500.It Pa certs/ 501TLS certificates for 502.Xr openssl 1 503.It Pa dict/ 504word lists; see 505.Xr look 1 506.Pp 507.Bl -tag -width Fl -compact 508.It Pa freebsd 509.Fx Ns -specific 510terms, proper names, and jargon 511.It Pa web2 512words from Webster's Second International 513.El 514.Pp 515.It Pa doc/ 516miscellaneous documentation 517.It Pa dtrace/ 518scripts for the Dynamic Tracing Compiler; see 519.Xr dtrace 1 520.It Pa examples/ 521various examples for users and programmers 522.It Pa firmware/ 523firmware images loaded by userland programs 524.It Pa games/ 525ASCII text files used by 526.Bx 527heritage games 528.It Pa keys/ 529known trusted and revoked keys 530.Pp 531.Bl -tag -width Fl -compact 532.It Pa pkg/ 533fingerprints for 534.Xr pkg 7 535and 536.Xr pkg 8 537.El 538.Pp 539.It Pa locale/ 540localization files; see 541.Xr setlocale 3 542.It Pa man/ 543system manual pages 544.It Pa misc/ 545miscellaneous system-wide ASCII text files 546.Pp 547.Bl -tag -width Fl -compact 548.It Pa ascii 549chart of the ASCII codepoints 550.It Pa flowers 551the meanings of flowers 552.It Pa magic 553magic numbers used by 554.Xr file 1 555.It Pa termcap 556terminal characteristics database; see 557.Xr termcap 5 558.El 559.Pp 560.It Pa mk/ 561templates for make; see 562.Xr make 1 563.It Pa nls/ 564national language support files 565.It Pa security/ 566data files for security policies such as 567.Xr mac_lomac 4 568.It Pa sendmail/ 569.Xr sendmail 8 570configuration files 571.It Pa skel/ 572example 573.Pa .\& 574(dot) files for new accounts 575.It Pa snmp/ 576MIBs, example files and tree definitions for the SNMP daemon 577.Pp 578.Bl -tag -width Fl -compact 579.It Pa defs/ 580tree definition files for use with 581.Xr gensnmptree 1 582.It Pa mibs/ 583management Information Base 584.Pq MIB 585files 586.El 587.Pp 588.It Pa syscons/ 589.Xr syscons 4 590files 591.Pp 592.Bl -tag -width Fl -compact 593.It Pa fonts/ 594console fonts; see 595.Xr vidcontrol 1 596and 597.Xr vidfont 1 598.It Pa keymaps/ 599console keyboard maps; see 600.Xr kbdcontrol 1 601and 602.Xr kbdmap 1 603.It Pa scrnmaps/ 604console screen maps 605.El 606.Pp 607.It Pa sysroot/ 608files necessary for the -sysroot compiler/linker argument to build non-native 609binaries 610.Pp 611.Bl -tag -width Fl -compact 612.It Pa VERSION/ 613files for 614.Fx 615release VERSION; 616by convention, 617.Dq VERSION 618matches 619.Xr uname 1 620.Fl r 621.Pp 622.Bl -tag -width Fl -compact 623.It Pa MACHINE.MACHINE_ARCH/ 624represent the binary ABI for these files; 625.Dq MACHINE 626matches 627.Xr uname 1 628.Fl m ; 629.Dq MACHINE_ARCH 630matches 631.Xr uname 1 632.Fl p 633.El 634.El 635.Pp 636.It Pa tabset/ 637tab description files for a variety of terminals; used in 638the termcap file; see 639.Xr termcap 5 640.It Pa vi/ 641localization support and utilities for 642.Xr vi 1 643.It Pa vt/ 644files used by the system console; see 645.Xr vt 4 646.Pp 647.Bl -tag -width Fl -compact 648.It Pa fonts/ 649console fonts; see 650.Xr vidcontrol 1 , 651.Xr vidfont 1 , 652and 653.Xr vtfontcvt 8 654.It Pa keymaps/ 655console keyboard maps; see 656.Xr kbdcontrol 1 657and 658.Xr kbdmap 1 659.El 660.Pp 661.It Pa zoneinfo/ 662timezone configuration information; see 663.Xr tzfile 5 664.El 665.Pp 666.It Pa src/ 667.Fx 668source code; see 669.Xr development 7 ; 670the layout of the source tree is described by the top-level 671.Pa README.md 672file 673.Pp 674.It Pa tests/ 675the 676.Fx 677test suite; see 678.Xr tests 7 679.El 680.It Pa /var/ 681log, temporary, transient, and spool files 682.Pp 683.Bl -tag -width "preserve/" -compact 684.It Pa account/ 685system accounting files 686.Pp 687.Bl -tag -width Ds -compact 688.It Pa acct 689execution accounting file; see 690.Xr acct 5 691.El 692.Pp 693.It Pa at/ 694timed command scheduling files; see 695.Xr at 1 696.Pp 697.Bl -tag -width Ds -compact 698.It Pa jobs/ 699job files 700.It Pa spool/ 701output spool files 702.El 703.Pp 704.It Pa audit/ 705security event audit trail files; see 706.Xr audit 8 707.It Pa authpf/ 708user shell sessions for authenticating gateways; see 709.Xr authpf 8 710.It Pa backups/ 711critical system configuration backups 712.It Pa cache/ 713miscellaneous cache files 714.Pp 715.Bl -tag -width Ds -compact 716.It Pa pkg/ 717cached packages for 718.Xr pkg 8 719.It Pa cups/ 720cached printers for the Common Unix Prinitng system; see 721.Xr cups 1 722.El 723.Pp 724.It Pa crash/ 725default directory to store kernel crash dumps; see 726.Xr crash 8 727and 728.Xr savecore 8 729.It Pa cron/ 730files used by cron; see 731.Xr cron 8 732.Pp 733.Bl -tag -width Ds -compact 734.It Pa tabs/ 735crontab files; see 736.Xr crontab 5 737.El 738.Pp 739.It Pa db/ 740miscellaneous automatically-generated system-specific database files 741.Pp 742.Bl -tag -width "freebsd-update/" -compact 743.It Pa etcupdate/ 744temporary files and log for 745.Xr etcupdate 8 746.It Pa freebsd-update/ 747downloads and temporary files for 748.Xr freebsd-update 8 749.It Pa pkg/ 750package database 751.El 752.Pp 753.It Pa empty/ 754for use by programs that require an empty directory, 755used for instance by 756.Xr sshd 8 757for privilege separation 758.It Pa games/ 759miscellaneous game status and score files for 760.Bx 761heritage games 762.It Pa heimdal/ 763Kerberos server databases; see 764.Xr kdc 8 765.It Pa lib/ 766holds state information for applications ported from linux 767.It Pa log/ 768system log files 769.Pp 770.Bl -tag -width "bsdinstall_log" -compact 771.It Pa Xorg.0.log 772.Xr Xserver 1 773log, if 774.Xr X 7 775is installed 776rotates to 777.Pa Xorg.0.log.old 778.It Pa aculog 779serial line access log; see 780.Xr cu 1 781.It Pa auth.log 782system authentication log 783.It Pa bsdinstall_log 784system installation log 785.It Pa bsdisks.log 786FreeDesktop.org automounter log, if a desktop environment is using 787.Xr bsdisks 8 , 788from 789.Xr ports 7 790.It Pa cron 791scheduled task log; see 792.Xr cron 8 793.It Pa cups/ 794logs for 795.Xr cups 1 796.It Pa daemon.log 797default log for system daemons 798.It Pa devd.log 799default log for device state change daemon 800.It Pa dmesg.today 801system message buffer log 802Rotates to 803.Pa dmesg.yesterday 804.It Pa debug.log 805??? 806.It Pa lpd-errs 807logs for the line printer daemon; see 808.Xr lpd 8 809.It Pa maillog 810.Xr sendmail 8 811log, rotates and compresses to maillog.0.bz2 812.It Pa messages 813general system log; see 814.Xr syslog 3 815.It Pa mount.today 816currently loaded 817.Xr fstab 5 , 818rotates to 819.Pa mount.yesterday 820.It Pa pf.today 821packet filter firewall log; see 822.Xr pf 4 823.It Pa pflog 824saved packets caught by 825.Xr pflogd 8 826.It Pa ppp.log 827see 828.Xr ppp 8 829.It Pa security 830transcript of events marked with the security flag 831.It Pa setuid.today 832listing of executable files which run with elevated permissions, rotates 833to 834.Pa setuid.yesterday 835.It Pa userlog 836logs changes in users or groups 837.It Pa utx.lastlogin 838last login log; see 839.Xr getutxent 3 840.It Pa utx.log 841login/logout log; see 842.Xr getutxent 3 843.It Pa xferlog 844default log for 845.Xr ftpd 8 846.El 847.Pp 848.It Pa mail/ 849user mailbox files 850.It Pa msgs/ 851system messages database; see 852.Xr msgs 1 853.It Pa preserve/ 854unused, present for historical reasons 855.It Pa quotas/ 856UFS quota information files 857.It Pa run/ 858files containing information about the operating system since it was booted 859.Pp 860.Bl -tag -width "wpa_supplicant/" -compact 861.It Pa bhyve/ 862.Xr bhyve 8 863virtual machine 864.Xr unix 4 Ns -domain sockets 865.It Pa ppp/ 866writable by the 867.Dq network 868group for command connection sockets; see 869.Xr ppp 8 870.It Pa utx.active 871database of current users; see 872.Xr getutxent 3 873.It Pa wpa_supplicant/ 874IEEE Std. 802.11 wifi run time files 875.El 876.Pp 877.It Pa rwho/ 878information about other systems on the local network; see 879.Xr rwhod 8 , 880.Xr rwho 1 , 881and 882.Xr ruptime 1 883.It Pa spool/ 884miscellaneous printer and mail system spooling directories 885.Pp 886.Bl -tag -width "clientmqueue/" -compact 887.It Pa clientmqueue/ 888undelivered submission mail queue; see 889.Xr sendmail 8 890.It Pa cups/ 891print jobs and temporary files for 892.Xr cups 1 893.It Pa dma/ 894undelivered mail queue for 895.Dx 896Mail Agent; see 897.Xr dma 8 898.It Pa lock/ 899??? 900.It Pa ftp/ 901ftp root directory; see 902.Xr ftpd 8 903.It Pa mqueue/ 904undelivered mail queue for 905.Xr sendmail 8 906.It Pa output/ 907line printer spooling directories 908.El 909.Pp 910.It Pa tmp/ 911temporary files that are not removed between system reboots by 912.Xr rc 8 913.Pp 914.Bl -tag -width "vi.recover/" -compact 915.It Pa vi.recover/ 916recovery files for the 917.Xr vi 1 918editor 919.El 920.Pp 921.It Pa unbound/ 922files and configuration for 923.Xr unbound 8 924.It Pa yp/ 925the NIS maps; see 926.Xr yp 8 927.El 928.El 929.Sh NOTES 930This manual page documents the default 931.Fx 932file system layout. 933The actual hierarchy on a given system is defined at the system 934administrator's discretion. 935A well-maintained installation will include a customized version of 936this document. 937.Sh SEE ALSO 938.Xr apropos 1 , 939.Xr find 1 , 940.Xr grep 1 , 941.Xr ls 1 , 942.Xr whereis 1 , 943.Xr which 1 944.Sh HISTORY 945A 946.Nm 947manual page first appeared in 1979 with 948.At v7 . 949