1.\" $NetBSD: hier.7,v 1.33 2001/04/09 17:33:08 wiz Exp $ 2.\" 3.\" Copyright (c) 1990, 1993, 1994 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)hier.7 8.5 (Berkeley) 6/1/94 35.\" 36.Dd November 8, 2000 37.Dt HIER 7 38.Os 39.Sh NAME 40.Nm hier 41.Nd layout of filesystems 42.Sh DESCRIPTION 43An outline of the filesystem hierarchy. 44.Pp 45Naming is very important. 46The 47.Ux 48System relies on filename conventions for much of its power as a system. 49The following file system layout describes generally where things are 50and what they are, with references to other man pages for more detailed 51documentation. 52.Pp 53Not all files will be in every system. 54.Pp 55.Bl -tag -width "/altroot/" 56.It Sy \&/ 57root directory of the system 58.It Sy /COPYRIGHT 59system copyright notice, most often put on 60.Tn CD-ROM 61distributions. 62.It Sy "/[a-z]" 63user filesystems 64.It Sy /altroot/ 65alternate root filesystem, in case of disaster 66.It Sy /amd/ 67home directories mount point; see 68.Xr amd 8 69.It Sy /bin/ 70utilities used in both single and multi-user environments 71.It Sy /boot* 72second-stage boot loader(s) for some platforms; see 73.Xr installboot 8 74.It Sy /dev/ 75block, character and other special device files 76.Pp 77.Bl -tag -width "MAKEDEV" -compact 78.It Sy MAKEDEV 79script for creating device files; 80see 81.Xr makedev 8 82.It Sy console 83the computer's console device 84.It Sy fd/ 85file descriptor files; 86see 87.Xr fd 4 88.It Sy drum 89system swap space; see 90.Xr drum 4 91.It Sy klog 92kernel logging device; see 93.Xr syslog 3 94.It Sy kmem 95kernel virtual memory device; see 96.Xr mem 4 97.It Sy log 98.Ux 99domain datagram log socket; see 100.Xr syslogd 8 101.It Sy mem 102kernel physical memory device; see 103.Xr mem 4 104.It Sy stderr 105.It Sy stdin 106.It Sy stdout 107file descriptor files; 108see 109.Xr fd 4 110.It Sy null 111the null device; see 112.Xr null 4 113.It Sy tty 114process' controlling terminal device; see 115.Xr tty 4 116.It Sy zero 117the zero device; see 118.Xr zero 4 119.El 120.It Sy /dump/ 121online 122.Xr dump 8 123repository 124.It Sy /etc/ 125system configuration files and scripts 126.Pp 127.Bl -tag -width "master.passwd" -compact 128.It Sy amd* 129configuration files for 130.Xr amd 8 131.It Sy changelist 132files backed up by the security script 133.It Sy crontab 134schedule used by the 135.Xr cron 8 136daemon 137.It Sy csh.cshrc 138.It Sy csh.login 139.It Sy csh.logout 140system-wide scripts for 141.Xr csh 1 142.It Sy daily 143script run each day by 144.Xr cron 8 145.It Sy daily.conf 146configuration file for 147.Sy daily ; 148see 149.Xr daily.conf 5 150.It Sy defaults/ 151default configuration files read by various 152.Pa /etc/*.conf 153files 154.It Sy disktab 155disk description file, see 156.Xr disktab 5 157.It Sy dm.conf 158dungeon master configuration; see 159.Xr dm.conf 5 160.It Sy dumpdates 161dump history; see 162.Xr dump 8 163.It Sy exports 164filesystem export information; see 165.Xr mountd 8 166.It Sy fstab 167filesystem information; see 168.Xr fstab 5 169and 170.Xr mount 8 171.It Sy ftpusers 172users denied 173.Xr ftp 1 174access; see 175.Xr ftpd 8 176.It Sy ftpwelcome 177.Xr ftp 1 178initial message; see 179.Xr ftpd 8 180.It Sy gettytab 181terminal configuration database; see 182.Xr gettytab 5 183.It Sy group 184group permissions file; see 185.Xr group 5 186.It Sy hosts 187host name database backup for 188.Xr named 8 ; 189see 190.Xr hosts 5 191.It Sy hosts.equiv 192trusted machines with equivalent user ID's 193.It Sy hosts.lpd 194trusted machines with printing privileges 195.It Sy inetd.conf 196Internet server configuration file; see 197.Xr inetd 8 198.It Sy kerberosIV/ 199configuration files for the kerberos version IV; 200see 201.Xr kerberos 8 202.It Sy localtime 203local timezone information; 204see 205.Xr ctime 3 206.It Sy mail/ 207configuration files for 208.Xr sendmail 8 209.Bp 210.Bl -tag -width "sendmail.*" -compact 211.It Sy aliases* 212name alias files 213.It Sy sendmail.* 214.Xr sendmail 8 215configuration information 216.El 217.It Sy mail.rc 218system-wide initialization script for 219.Xr mail 1 220.It Sy man.conf 221configuration file for 222.Xr man 1 ; 223see 224.Xr man.conf 5 225.It Sy master.passwd 226.It Sy passwd 227.It Sy pwd.db 228.It Sy spwd.db 229password files and their databases; see 230.Xr pwd_mkdb 8 231.It Sy mk.conf 232optional file containing 233.Xr make 1 234variables, read by pkgsrc and the system sources. 235.It Sy monthly 236script run each month by 237.Xr cron 8 238.It Sy monthly.conf 239configuration file for 240.Sy monthly ; 241see 242.Xr monthly.conf 5 243.It Sy motd 244system message of the day 245.It Sy mtree/ 246mtree configuration files; 247see 248.Xr mtree 8 249.It Sy named.* 250.It Sy namedb/ 251named configuration files and databases; 252see 253.Xr named 8 254.It Sy netgroup 255network groups; see 256.Xr netgroup 5 257.It Sy netstart 258network startup script 259.It Sy networks 260network name data base; see 261.Xr networks 5 262.It Sy phones 263remote host phone number data base; see 264.Xr phones 5 265.It Sy printcap 266system printer configuration; see 267.Xr printcap 5 268.It Sy protocols 269protocol name database; see 270.Xr protocols 5 271.It Sy rc 272.It Sy rc.shutdown 273.It Sy rc.local 274.It Sy rc.d/ 275system startup and shutdown scripts; see 276.Xr rc 8 277and 278.Xr rc.d 8 279.It Sy rc.conf 280configuration file for system startup and shutdown scripts; see 281.Xr rc.conf 5 282.It Sy remote 283remote host description file; see 284.Xr remote 5 285.It Sy security 286daily (in)security script run by 287.Xr cron 8 288.It Sy security.conf 289configuration file for 290.Sy security ; 291see 292.Xr security.conf 5 293.It Sy services 294service name data base; see 295.Xr services 5 296.It Sy shells 297list of permitted shells; see 298.Xr shells 5 299.It Sy sliphome/ 300.Tn SLIP 301login/logout scripts; see 302.Xr sliplogin 8 303.It Sy syslog.conf 304.Xr syslogd 8 305configuration file; see 306.Xr syslog.conf 5 307.It Sy termcap 308terminal type database; see 309.Xr termcap 3 310.It Sy ttys 311terminal initialization information; see 312.Xr ttys 5 313.It Sy uucp/ 314UUCP configuration files; see 315.Xr uucp 1 316and 317.Xr uucico 8 . 318.It Sy weekly 319script run each week by 320.Xr cron 8 321.It Sy weekly.conf 322configuration file for 323.Sy weekly ; 324see 325.Xr weekly.conf 5 326.El 327.It Sy /home/ 328mount point for the automounter; see 329.Xr amd 8 330.It Sy /mnt/ 331empty directory commonly used by 332system administrators as a temporary mount point 333.It Sy /netbsd 334pure kernel executable (the operating system loaded into memory 335at boot time). 336.It Sy /root/ 337home directory for the super-user 338.Pp 339.Bl -tag -width ".profile" -compact 340.It Sy \&.rhosts 341super-user id mapping between machines 342.It Sy \&.cshrc 343super-user start-up file 344.It Sy \&.login 345super-user start-up file 346.It Sy \&.profile 347super-user start-up file 348.El 349.ne 1i 350.It Sy /sbin/ 351system programs and administration utilities 352used in both single-user and multi-user environments 353.It Sy /stand/ 354programs used in a standalone environment 355.It Sy /sys 356symbolic link to the operating system source 357.It Sy /tmp/ 358temporary files, usually a 359.Xr mfs 8 360memory-based filesystem (the contents 361of /tmp are usually NOT preserved across a system reboot) 362.It Sy /usr/ 363contains the majority of the system utilities and files 364.Pp 365.Bl -tag -width "libdata/" -compact 366.It Sy X11R6/ 367X11 files 368.Pp 369.Bl -tag -width "include/" -compact 370.It Sy bin/ 371X11 binaries 372.It Sy include/ 373X11 include files 374.It Sy lib/ 375X11 libraries 376.El 377.Pp 378.It Sy bin/ 379common utilities, programming tools, and applications 380.It Sy games/ 381the important stuff 382.It Sy include/ 383standard C include files 384.Pp 385.Bl -tag -width "kerberosIV/" -compact 386.It Sy arpa/ 387include files for Internet service protocols 388.It Sy g++/ 389include files for the C++ compiler 390.It Sy kerberosIV/ 391include files for kerberos authentication package; 392see 393.Xr kerberos 8 394.It Sy machine/ 395machine specific include files 396.It Sy net/ 397.It Sy netatalk/ 398C include files for AppleTalk protocols 399miscellaneous network include files; 400see 401.Xr atalk 4 402.It Sy netccitt/ 403CCITT networking include files 404.It Sy netinet/ 405include files for Internet standard protocols; see 406.Xr inet 4 407.It Sy netinet6/ 408include files for Internet protocol version 6; see 409.Xr inet6 4 410.It Sy netiso/ 411include files for ISO standard protocols; see 412.Xr iso 4 413.It Sy netkey/ 414include files for secret key management, used for security protocols; see 415.Xr ipsec 4 416.It Sy natm/ 417C include files for native mode ATM 418.It Sy netns/ 419C include files for XNS standard protocols; see 420.Xr ns 4 421.It Sy nfs/ 422C include files for NFS (Network File System) 423.It Sy protocols/ 424C include files for Berkeley service protocols 425.It Sy sys/ 426system C include files (kernel data structures) 427.It Sy ufs/ 428C include files for UFS (The U-word File System) 429.El 430.Pp 431.It Sy lib/ 432archive, profiled, position independant archive, and shared libraries 433.It Sy libdata/ 434miscellaneous utility data files 435.It Sy libexec/ 436system daemons & system utilities (executed by other programs) 437.Pp 438.Bl -tag -width "uucp/" -compact 439.It Sy uucp/ 440UUCP binaries and scripts (historically placed; to be moved) 441.El 442.Pp 443.It Sy local/ 444local executables, libraries, etc. 445.Pp 446.Bl -tag -width "include/" -compact 447.It Sy bin/ 448local binaries 449.It Sy include/ 450local include files 451.It Sy libexec/ 452local daemons 453.It Sy libdata/ 454local data files 455.El 456.Pp 457.It Sy mdec/ 458boot blocks, etc. 459.It Sy pkg/ 460packages maintained by groups other than the 461.Nx 462Project. 463.Pp 464.Bl -tag -width "include/" -compact 465.It Sy bin/ 466contributed binaries 467.It Sy sbin/ 468contributed system utilities 469.It Sy include/ 470contributed include files 471.It Sy libexec/ 472contributed daemons 473.It Sy libdata/ 474contributed data files 475.El 476.Pp 477.It Sy pkgsrc/ 478build descriptions ("packages") for the 479.Nx 480packages system. 481.Pp 482.Bl -tag -width "distfiles" -compact 483.It Sy distfiles 484Where unchanged source archives are fetched to/stored 485.It Sy packages 486Where compiled binary packages are stored 487.El 488.Pp 489There are also several other subdirectories which contain packages of 490a certain category, e.g. archivers, graphics, ... 491.Pp 492.It Sy obj/ 493architecture-specific target tree produced by building the 494.Pa /usr/src 495tree; normally a symbolic link or mounted filesystem 496.It Sy sbin/ 497system daemons and system utilities (normally executed by the super-user) 498.It Sy share/ 499architecture-independent text files 500.Pp 501.Bl -tag -width "calendar/" -compact 502.It Sy calendar/ 503a variety of calendar files; see 504.Xr calendar 1 505.It Sy dict/ 506word lists; 507see 508.Xr look 1 509and 510.Xr spell 1 511.Pp 512.Bl -tag -width "special/" -compact 513.It Sy words 514common words 515.It Sy web2 516words of Webster's 2nd International 517.It Sy papers/ 518reference databases; 519see 520.Xr refer 1 521.It Sy special/ 522custom word lists; 523see 524.Xr spell 1 525.El 526.Pp 527.It Sy doc/ 528miscellaneous documentation; source for most of the printed 529.Bx 4.3 530manuals (available 531from the 532.Tn USENIX 533association) 534.It Sy games/ 535text files used by various games 536.It Sy lkm/ 537documentation on the loadable kernel modules interface 538.It Sy man/ 539formatted manual pages 540.It Sy me/ 541macros for use with the 542.Xr me 7 543macro package 544.It Sy misc/ 545miscellaneous system-wide text files 546.Pp 547.Bl -tag -width "termcap" -compact 548.It Sy termcap 549terminal characteristics database; 550see 551.Xr termcap 5 552.El 553.Pp 554.It Sy mk/ 555include files for 556.Xr make 1 557.It Sy ms/ 558macros for use with the 559.Xr ms 7 560macro package 561.It Sy skel/ 562sample initialization files for new user accounts 563.It Sy tabset/ 564tab description files for a variety of terminals, used in 565the termcap file; 566see 567.Xr termcap 5 568.It Sy tmac/ 569text processing macros; 570see 571.Xr nroff 1 572and 573.Xr troff 1 574.It Sy zoneinfo/ 575timezone configuration information; 576see 577.Xr tzfile 5 578.El 579.Pp 580.El 581.Pp 582.It Sy /usr/src/ 583.Nx 584and local source files 585.Pp 586.Bl -tag -width "domestic/" -compact 587.It Sy bin/ 588source for utilities/files in 589.Pa /bin 590.It Sy distrib/ 591tools and data-files for making distributions 592.It Sy crypto/ 593cryptographic source, which may have import or export restrictions 594.It Sy dist/ 595third-party 596.Sq virgin 597source code, referenced by other parts of the source tree 598.It Sy etc/ 599source (usually example files) for files in 600.Pa /etc 601.It Sy games/ 602source for utilities/files in 603.Pa /usr/games 604.It Sy gnu/ 605source for programs covered by the 606.Tn GNU 607license (or similar) 608.It Sy include/ 609source for files in 610.Pa /usr/include 611.It Sy lib/ 612source for libraries in 613.Pa /usr/lib 614.It Sy libexec/ 615source for utilities/files in 616.Pa /usr/libexec 617.It Sy regress/ 618various regression tests 619.It Sy sbin/ 620source for utilities/files in 621.Pa /sbin 622.It Sy share/ 623source for files in 624.Pa /usr/share 625.Pp 626.Bl -tag -width "doc/" -compact 627.It Sy doc/ 628.Pp 629.Bl -tag -width "papers/" -compact 630.It Sy papers/ 631source for various Berkeley technical papers 632.It Sy psd/ 633source for Programmer's Supplementary Documents 634.It Sy smm/ 635source for System Manager's Manual 636.It Sy usd/ 637source for User's Supplementary Documents 638.Pp 639.El 640.El 641.It Sy sys/ 642kernel source files 643.Pp 644.Bl -tag -width "gdbscripts/" -compact 645.It Sy adosfs/ 646AmigaDOS file-system support; see 647.Xr mount_ados 8 648.It Sy arch/ 649.Pp 650.Bl -tag -width "amigappc/" -compact 651.It Sy alpha/ 652support for the Digital Equipment Corp. Alpha architecture 653.It Sy amiga/ 654support for the Amiga architecture 655.It Sy amigappc/ 656support for the PowerPC based Amiga architecture 657.It Sy arc/ 658support for the ARC specification compliant systems. 659.It Sy arm26/ 660support for ARM2 and ARM3 based systems 661.It Sy arm32/ 662support for the ARM32 architecture 663.It Sy atari/ 664support for the Atari architecture 665.It Sy bebox/ 666support for the Be Inc. BeBox architecture 667.It Sy cobalt/ 668support for the Cobalt Networks MIPS Microserver architecture 669.It Sy dreamcast/ 670support for the Sega Dreamcast game console 671.It Sy evbsh3/ 672support for the SH3 based evaluation boards 673.It Sy hp300/ 674support for the Hewlett-Packard 9000/300 68000-based workstations 675.It Sy hpcmips/ 676support for the MIPS based WinCE hand-held devices 677.It Sy hpcsh/ 678support for the Hitachi SH3/4 based WinCE hand-held devices 679.It Sy i386/ 680support for the Intel 386/486/Pentium/etc. workstations 681.It Sy luna68k/ 682support for the Omron LUNA 68000-based workstations 683.It Sy m68k/ 684general support for the 68000 processor 685.It Sy mac68k/ 686support for the Apple Computer 68000-based workstations 687.It Sy macppc/ 688support for the Apple Computer PowerPC-based workstations 689.It Sy mips/ 690general support for MIPS architectures 691.It Sy mipsco/ 692support for Mips Computer Systems Inc. architecture 693.It Sy mmeye/ 694support for the Brains Inc. SH3 based mmEye multimedia server 695.It Sy mvme68k/ 696support for the VME 68000-based cards 697.It Sy news68k/ 698support for the Sony NEWS 68000-based workstations 699.It Sy newsmips/ 700support for the Sony NEWS MIPS-based workstations 701.It Sy next68k/ 702support for the NeXT 68000-based workstations 703.It Sy ofppc/ 704support for Open Firmware PowerPC workstations 705.It Sy pc532/ 706support for the pc532 architecture 707.It Sy pmax/ 708support for the MIPS-based DECstation architecture 709.It Sy powerpc/ 710general support for PowerPC architectures 711.It Sy prep/ 712support for the PowerPC Reference Platform 713.It Sy sgimips/ 714support for the SGI MIPS architecture 715.It Sy sh3/ 716general support for SH3 architectures 717.It Sy sparc/ 718support for the Sun Microsystems SPARC architecture 719.It Sy sparc64/ 720support for the Sun Microsystems UltraSPARC architecture 721.It Sy sun3/ 722support for the Sun Microsystems 68000-based architecture 723.It Sy vax/ 724Digital Equipment Corp. VAX architecture 725.It Sy x68k/ 726support for the Sharp X680x0 68000-based workstations 727.El 728.Pp 729.It Sy compat/ 730kernel compatibility modules directory 731.Pp 732.Bl -tag -width "ossaudio/" -compact 733.It Sy common/ 734common compatibility routines, old 735.Bx 4 736and 737.Nx 738routines. 739.It Sy freebsd/ 740support for 741.Fx 742binaries; see 743.Xr compat_freebsd 8 744.It Sy hpux/ 745support for 68000 HP-UX binaries 746.It Sy ibcs2/ 747support for Intel Binary binaries 748.It Sy linux/ 749support for Linux binaries; see 750.Xr compat_linux 8 751.It Sy m68k4k/ 752support for 4Kb page 68000 binaries 753.It Sy netbsd32/ 754support for NetBSD 32-bit binaries on 64 bit platforms with compatible 755CPU families 756.It Sy osf1/ 757support for 758.Tn Digital 759.Ux 760.Po 761formerly 762.Tn OSF/1 763.Pc 764binaries 765.It Sy ossaudio/ 766support for OSS audio 767.It Sy pecoff/ 768support for 769.Tn Win32 770binaries; see 771.Xr compat_pecoff 8 772.It Sy sunos/ 773support for 774.Tn SunOS 4.x 775binaries; see 776.Xr compat_sunos 8 777.It Sy svr4/ 778support for System V Release 4 binaries; see 779.Xr compat_svr4 8 780.It Sy ultrix/ 781support for 782.Tn Ultrix 783binaries 784.It Sy vax1k/ 785support for older Vax binaries that started on a 1 KB boundary 786.El 787.Pp 788.It Sy conf/ 789architecture independent configuration directory 790.It Sy crypto/ 791cryptographic kernel source, which may have import or export restrictions 792.It Sy ddb/ 793in kernel debugger 794.It Sy dev/ 795architecture independent device support 796.It Sy filecorefs/ 797support for the Acorn RISC OS filecore filesystem; see 798.Xr mount_filecore 8 799.It Sy gdbscripts/ 800support for accessing kernel structures from within the debugger 801.Xr gdb 1 . 802.It Sy ipkdb/ 803support for kernel debugging over the network 804.It Sy isofs/ 805support for ISO filesystems 806.Pp 807.Bl -tag -width "cd9660/" -compact 808.It Sy cd9660/ 809support for the ISO-9660 filesystem; see 810.Xr mount_cd9660 8 811.El 812.Pp 813.It Sy kern/ 814support for the high kernel (system calls) 815.It Sy lib/ 816kernel libraries 817.Pp 818.Bl -tag -width "libkern/" -compact 819.It Sy libkern/ 820C library routines used in the kernel 821.It Sy libsa/ 822machine independant stand alone kernel library 823.It Sy libz/ 824compression library 825.El 826.Pp 827.It Sy lkm/ 828loadable kernel modules 829.Pp 830.Bl -tag -width "gdbscripts/" -compact 831.It Sy compat/ 832LKM support compatibility modules; currently unsupported. 833.It Sy netinet/ 834LKM support networking modules 835.Pp 836.Bl -tag -width "if_ipl/" -compact 837.It Sy if_ipl/ 838LKM for IP-Filter 839.El 840.Pp 841.It Sy vfs/ 842LKM support for file systems. 843.El 844.Pp 845.It Sy miscfs/ 846miscellaneous file systems 847.Pp 848.Bl -tag -width "deadfs/" -compact 849.It Sy deadfs/ 850kernel only dead file system 851.It Sy fdesc/ 852file descriptor file system; see 853.Xr mount_fdesc 8 854.It Sy fifofs/ 855POSIX FIFO support 856.It Sy genfs/ 857kernel only generic file system 858.It Sy kernfs/ 859kernel namespace file system; see 860.Xr mount_kernfs 8 861.It Sy nullfs/ 862loop back file system; see 863.Xr mount_null 8 864.It Sy overlay/ 865overlay file system; see 866.Xr mount_overlay 8 867.It Sy portal/ 868portal file system; see 869.Xr mount_portal 8 870.It Sy procfs/ 871process file system; see 872.Xr mount_procfs 8 873.It Sy specfs/ 874kernel only special file system 875.It Sy syncfs/ 876kernel trickle sync algorithm 877.It Sy umapfs/ 878user and group re-mapping file system; see 879.Xr mount_umap 8 880.It Sy union/ 881union file system; see 882.Xr mount_union 8 883.El 884.Pp 885.It Sy msdosfs/ 886.Tn MS-DOS 887file system; see 888.Xr mount_msdos 8 889.It Sy net/ 890miscellaneous networking support 891.It Sy netatalk/ 892AppleTalk networking support 893.It Sy netccitt/ 894CCITT networking support 895.It Sy netinet/ 896IP networking support 897.It Sy netinet6/ 898IPv6 networking support 899.It Sy netiso/ 900ISO networking support 901.It Sy netkey/ 902Key database for IPsec networking support 903.It Sy netnatm/ 904ATM networking support 905.It Sy netns/ 906XNS networking support 907.It Sy nfs/ 908NFS support 909.It Sy ntfs/ 910NTFS filesystem support 911.It Sy stand/ 912kernel standalone support 913.It Sy sys/ 914kernel (and system) include files 915.It Sy ufs/ 916local filesystem support 917.Pp 918.Bl -tag -width "ffs/" -compact 919.It Sy ffs/ 920the Berkeley Fast File System 921.It Sy lfs/ 922the log-structured file system 923.It Sy mfs/ 924the in-memory file system 925.It Sy ufs/ 926shared 927.Ux 928file system support 929.El 930.It Sy uvm/ 931UVM virtual memory system 932.El 933.It Sy usr.bin/ 934source for utilities/files in 935.Pa /usr/bin 936.It Sy usr.sbin/ 937source for utilities/files in 938.Pa /usr/sbin 939.El 940.It Sy /var/ 941multi-purpose log, temporary, transient, and spool files 942.Pp 943.Bl -tag -width "preserve/" -compact 944.It Sy account/ 945system accounting files 946.Pp 947.Bl -tag -width "acct" -compact 948.It Sy acct 949execution accounting file; 950see 951.Xr acct 5 952.El 953.Pp 954.It Sy at/ 955timed command scheduling files; 956see 957.Xr at 1 958.It Sy backups/ 959miscellaneous backup files, largely of files found in 960.Pa /etc 961.It Sy crash/ 962system crash dumps; see 963.Xr savecore 8 964.It Sy cron/ 965scheduled commands configuration files; see 966.Xr cron 8 967.It Sy db/ 968miscellaneous automatically generated system-specific database files 969.It Sy games/ 970miscellaneous game status and log files 971.It Sy heimdal/ 972Kerberos 5 KDC database; see 973.Xr kdc 8 974.It Sy log/ 975miscellaneous system log files 976.Pp 977.Bl -tag -width "monthly.out" -compact 978.It Sy amd.* 979.Xr amd 8 980logs 981.It Sy daily.out 982output of the last run of the 983.Pa /etc/daily 984script 985.It Sy ftp.* 986.Xr ftp 1 987logs 988.It Sy kerberos.* 989.Xr kerberos 8 990logs 991.It Sy lastlog 992system last time logged in log; see 993.Xr utmp 5 994.It Sy lpd-errs.* 995printer daemon error logs; see 996.Xr lpd 8 997.It Sy maillog.* 998.Xr sendmail 8 999log files 1000.It Sy messages.* 1001general system information log 1002.It Sy monthly.out 1003output of the last run of the 1004.Pa /etc/monthly 1005script 1006.It Sy secure 1007sensitive security information log 1008.It Sy sendmail.st 1009.Xr sendmail 8 1010statistics 1011.It Sy timed.* 1012.Xr timed 8 1013logs 1014.It Sy weekly.out 1015output of the last run of the 1016.Pa /etc/weekly 1017script 1018.It Sy wtmp 1019login/logout log; 1020see 1021.Xr utmp 5 1022.El 1023.Pp 1024.It Sy mail/ 1025user system mailboxes 1026.It Sy msgs/ 1027system messages; see 1028.Xr msgs 1 1029.\" since we use nvi (now called vi) this isn't the place any more, is it? 1030.It Sy pkg/ 1031working files for third party packages 1032.It Sy preserve/ 1033temporary home of files preserved after an accidental death of 1034.Xr ex 1 1035or 1036.Xr vi 1 1037.It Sy quotas/ 1038filesystem quota information 1039.It Sy run/ 1040system information files, rebuilt after each reboot 1041.Pp 1042.Bl -tag -width "utmp" -compact 1043.It Sy utmp 1044database of current users; see 1045.Xr utmp 5 1046.El 1047.Pp 1048.It Sy rwho/ 1049rwho data files; see 1050.Xr rwhod 8 , 1051.Xr rwho 1 , 1052and 1053.Xr ruptime 1 1054.It Sy spool/ 1055miscellaneous printer and mail system spooling directories 1056.Pp 1057.Bl -tag -width "uucppublic/" -compact 1058.It Sy ftp/ 1059commonly 1060.Dq ~ftp , 1061the anonymous ftp root directory; see 1062.Xr ftpd 8 1063.It Sy mqueue/ 1064undelivered mail queue; 1065see 1066.Xr sendmail 8 1067.It Sy news/ 1068Network news archival and spooling directories 1069.It Sy output/ 1070printer spooling directories 1071.It Sy uucp/ 1072uucp spool directory 1073.It Sy uucppublic/ 1074commonly 1075.Dq ~uucp , 1076the uucp public temporary directory; see 1077.Xr uucp 1 1078.El 1079.Pp 1080.It Sy tmp/ 1081temporary files that are not discarded between system reboots 1082.Pp 1083.Bl -tag -width "vi.recover/" -compact 1084.It Sy vi.recover/ 1085recovery directory for new 1086.Xr vi 1 1087.El 1088.It Sy yp/ 1089Databases and configuration for the NIS (YP) system; see 1090.Xr nis 8 . 1091.El 1092.El 1093.Sh SEE ALSO 1094.Xr apropos 1 , 1095.Xr ls 1 , 1096.Xr whatis 1 , 1097.Xr whereis 1 , 1098.Xr which 1 1099.Sh HISTORY 1100A 1101.Nm 1102manual page appeared in 1103.At v7 . 1104