1.\" $NetBSD: hier.7,v 1.36 2001/10/19 15:36:36 uch 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 October 15, 2001 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 playstation2/ 708support for the SONY PlayStation 2 709.It Sy pmax/ 710support for the MIPS-based DECstation architecture 711.It Sy powerpc/ 712general support for PowerPC architectures 713.It Sy prep/ 714support for the PowerPC Reference Platform 715.It Sy sgimips/ 716support for the SGI MIPS architecture 717.It Sy sh3/ 718general support for SH3 architectures 719.It Sy sparc/ 720support for the Sun Microsystems SPARC architecture 721.It Sy sparc64/ 722support for the Sun Microsystems UltraSPARC architecture 723.It Sy sun3/ 724support for the Sun Microsystems 68000-based architecture 725.It Sy vax/ 726Digital Equipment Corp. VAX architecture 727.It Sy x68k/ 728support for the Sharp X680x0 68000-based workstations 729.El 730.Pp 731.It Sy compat/ 732kernel compatibility modules directory 733.Pp 734.Bl -tag -width "ossaudio/" -compact 735.It Sy common/ 736common compatibility routines, old 737.Bx 4 738and 739.Nx 740routines. 741.It Sy freebsd/ 742support for 743.Fx 744binaries; see 745.Xr compat_freebsd 8 746.It Sy hpux/ 747support for 68000 HP-UX binaries 748.It Sy ibcs2/ 749support for Intel Binary binaries 750.It Sy linux/ 751support for Linux binaries; see 752.Xr compat_linux 8 753.It Sy m68k4k/ 754support for 4Kb page 68000 binaries 755.It Sy netbsd32/ 756support for 757.Nx 75832-bit binaries on 64 bit platforms with compatible CPU families 759.It Sy osf1/ 760support for 761.Tn Digital 762.Ux 763.Po 764formerly 765.Tn OSF/1 766.Pc 767binaries 768.It Sy ossaudio/ 769support for OSS audio 770.It Sy pecoff/ 771support for 772.Tn Win32 773binaries; see 774.Xr compat_pecoff 8 775.It Sy sunos/ 776support for 777.Tn SunOS 4.x 778binaries; see 779.Xr compat_sunos 8 780.It Sy svr4/ 781support for System V Release 4 binaries; see 782.Xr compat_svr4 8 783.It Sy ultrix/ 784support for 785.Tn Ultrix 786binaries 787.It Sy vax1k/ 788support for older Vax binaries that started on a 1 KB boundary 789.El 790.Pp 791.It Sy conf/ 792architecture independent configuration directory 793.It Sy crypto/ 794cryptographic kernel source, which may have import or export restrictions 795.It Sy ddb/ 796in kernel debugger 797.It Sy dev/ 798architecture independent device support 799.It Sy filecorefs/ 800support for the Acorn RISC OS filecore filesystem; see 801.Xr mount_filecore 8 802.It Sy gdbscripts/ 803support for accessing kernel structures from within the debugger 804.Xr gdb 1 . 805.It Sy ipkdb/ 806support for kernel debugging over the network 807.It Sy isofs/ 808support for ISO filesystems 809.Pp 810.Bl -tag -width "cd9660/" -compact 811.It Sy cd9660/ 812support for the ISO-9660 filesystem; see 813.Xr mount_cd9660 8 814.El 815.Pp 816.It Sy kern/ 817support for the high kernel (system calls) 818.It Sy lib/ 819kernel libraries 820.Pp 821.Bl -tag -width "libkern/" -compact 822.It Sy libkern/ 823C library routines used in the kernel 824.It Sy libsa/ 825machine independant stand alone kernel library 826.It Sy libz/ 827compression library 828.El 829.Pp 830.It Sy lkm/ 831loadable kernel modules 832.Pp 833.Bl -tag -width "gdbscripts/" -compact 834.It Sy compat/ 835LKM support compatibility modules; currently unsupported. 836.It Sy netinet/ 837LKM support networking modules 838.Pp 839.Bl -tag -width "if_ipl/" -compact 840.It Sy if_ipl/ 841LKM for IP-Filter 842.El 843.Pp 844.It Sy vfs/ 845LKM support for file systems. 846.El 847.Pp 848.It Sy miscfs/ 849miscellaneous file systems 850.Pp 851.Bl -tag -width "deadfs/" -compact 852.It Sy deadfs/ 853kernel only dead file system 854.It Sy fdesc/ 855file descriptor file system; see 856.Xr mount_fdesc 8 857.It Sy fifofs/ 858POSIX FIFO support 859.It Sy genfs/ 860kernel only generic file system 861.It Sy kernfs/ 862kernel namespace file system; see 863.Xr mount_kernfs 8 864.It Sy nullfs/ 865loop back file system; see 866.Xr mount_null 8 867.It Sy overlay/ 868overlay file system; see 869.Xr mount_overlay 8 870.It Sy portal/ 871portal file system; see 872.Xr mount_portal 8 873.It Sy procfs/ 874process file system; see 875.Xr mount_procfs 8 876.It Sy specfs/ 877kernel only special file system 878.It Sy syncfs/ 879kernel trickle sync algorithm 880.It Sy umapfs/ 881user and group re-mapping file system; see 882.Xr mount_umap 8 883.It Sy union/ 884union file system; see 885.Xr mount_union 8 886.El 887.Pp 888.It Sy msdosfs/ 889.Tn MS-DOS 890file system; see 891.Xr mount_msdos 8 892.It Sy net/ 893miscellaneous networking support 894.It Sy netatalk/ 895AppleTalk networking support 896.It Sy netccitt/ 897CCITT networking support 898.It Sy netinet/ 899IP networking support 900.It Sy netinet6/ 901IPv6 networking support 902.It Sy netiso/ 903ISO networking support 904.It Sy netkey/ 905Key database for IPsec networking support 906.It Sy netnatm/ 907ATM networking support 908.It Sy netns/ 909XNS networking support 910.It Sy nfs/ 911NFS support 912.It Sy ntfs/ 913NTFS filesystem support 914.It Sy stand/ 915kernel standalone support 916.It Sy sys/ 917kernel (and system) include files 918.It Sy ufs/ 919local filesystem support 920.Pp 921.Bl -tag -width "ffs/" -compact 922.It Sy ffs/ 923the Berkeley Fast File System 924.It Sy lfs/ 925the log-structured file system 926.It Sy mfs/ 927the in-memory file system 928.It Sy ufs/ 929shared 930.Ux 931file system support 932.El 933.It Sy uvm/ 934UVM virtual memory system 935.El 936.It Sy usr.bin/ 937source for utilities/files in 938.Pa /usr/bin 939.It Sy usr.sbin/ 940source for utilities/files in 941.Pa /usr/sbin 942.El 943.It Sy /var/ 944multi-purpose log, temporary, transient, and spool files 945.Pp 946.Bl -tag -width "preserve/" -compact 947.It Sy account/ 948system accounting files 949.Pp 950.Bl -tag -width "acct" -compact 951.It Sy acct 952execution accounting file; 953see 954.Xr acct 5 955.El 956.Pp 957.It Sy at/ 958timed command scheduling files; 959see 960.Xr at 1 961.It Sy backups/ 962miscellaneous backup files, largely of files found in 963.Pa /etc 964.It Sy chroot/ 965home directories of applications which are run in a 966.Xr chroot 8 967.Dq cage . 968.It Sy crash/ 969system crash dumps; see 970.Xr savecore 8 971.It Sy cron/ 972scheduled commands configuration files; see 973.Xr cron 8 974.It Sy db/ 975miscellaneous automatically generated system-specific database files 976.It Sy games/ 977miscellaneous game status and log files 978.It Sy heimdal/ 979Kerberos 5 KDC database; see 980.Xr kdc 8 981.It Sy log/ 982miscellaneous system log files 983.Pp 984.Bl -tag -width "monthly.out" -compact 985.It Sy amd.* 986.Xr amd 8 987logs 988.It Sy daily.out 989output of the last run of the 990.Pa /etc/daily 991script 992.It Sy ftp.* 993.Xr ftp 1 994logs 995.It Sy kerberos.* 996.Xr kerberos 8 997logs 998.It Sy lastlog 999system last time logged in log; see 1000.Xr utmp 5 1001.It Sy lpd-errs.* 1002printer daemon error logs; see 1003.Xr lpd 8 1004.It Sy maillog.* 1005.Xr sendmail 8 1006log files 1007.It Sy messages.* 1008general system information log 1009.It Sy monthly.out 1010output of the last run of the 1011.Pa /etc/monthly 1012script 1013.It Sy secure 1014sensitive security information log 1015.It Sy sendmail.st 1016.Xr sendmail 8 1017statistics 1018.It Sy timed.* 1019.Xr timed 8 1020logs 1021.It Sy weekly.out 1022output of the last run of the 1023.Pa /etc/weekly 1024script 1025.It Sy wtmp 1026login/logout log; 1027see 1028.Xr utmp 5 1029.El 1030.Pp 1031.It Sy mail/ 1032user system mailboxes 1033.It Sy msgs/ 1034system messages; see 1035.Xr msgs 1 1036.\" since we use nvi (now called vi) this isn't the place any more, is it? 1037.It Sy pkg/ 1038working files for third party packages 1039.It Sy preserve/ 1040temporary home of files preserved after an accidental death of 1041.Xr ex 1 1042or 1043.Xr vi 1 1044.It Sy quotas/ 1045filesystem quota information 1046.It Sy run/ 1047system information files, rebuilt after each reboot 1048.Pp 1049.Bl -tag -width "utmp" -compact 1050.It Sy utmp 1051database of current users; see 1052.Xr utmp 5 1053.El 1054.Pp 1055.It Sy rwho/ 1056rwho data files; see 1057.Xr rwhod 8 , 1058.Xr rwho 1 , 1059and 1060.Xr ruptime 1 1061.It Sy spool/ 1062miscellaneous printer and mail system spooling directories 1063.Pp 1064.Bl -tag -width "uucppublic/" -compact 1065.It Sy ftp/ 1066commonly 1067.Dq ~ftp , 1068the anonymous ftp root directory; see 1069.Xr ftpd 8 1070.It Sy mqueue/ 1071undelivered mail queue; 1072see 1073.Xr sendmail 8 1074.It Sy news/ 1075Network news archival and spooling directories 1076.It Sy output/ 1077printer spooling directories 1078.It Sy uucp/ 1079uucp spool directory 1080.It Sy uucppublic/ 1081commonly 1082.Dq ~uucp , 1083the uucp public temporary directory; see 1084.Xr uucp 1 1085.El 1086.Pp 1087.It Sy tmp/ 1088temporary files that are not discarded between system reboots 1089.Pp 1090.Bl -tag -width "vi.recover/" -compact 1091.It Sy vi.recover/ 1092recovery directory for new 1093.Xr vi 1 1094.El 1095.It Sy yp/ 1096Databases and configuration for the NIS (YP) system; see 1097.Xr nis 8 . 1098.El 1099.El 1100.Sh SEE ALSO 1101.Xr apropos 1 , 1102.Xr ls 1 , 1103.Xr whatis 1 , 1104.Xr whereis 1 , 1105.Xr which 1 1106.Sh HISTORY 1107A 1108.Nm 1109manual page appeared in 1110.At v7 . 1111