1.\" $NetBSD: hier.7,v 1.40 2002/02/19 15:03:33 pooka 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.Pp 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 \*[Am] 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/ 649architecture-specific support 650.Pp 651.Bl -tag -width "playstation2/" -compact 652.It Sy acorn32/ 653Acorn RiscPC/A7000/NC and compatibles 654.It Sy algor/ 655Algorithmics MIPS evaluations board 656.It Sy alpha/ 657Digital Equipment Corp. Alpha architecture 658.It Sy amiga/ 659Amiga architecture 660.It Sy amigappc/ 661PowerPC based Amiga architecture 662.It Sy arc/ 663ARC specification compliant systems. 664.It Sy arm/ 665ARM processor general support 666.It Sy arm26/ 667ARM2 and ARM3 based systems 668.It Sy atari/ 669Atari architecture 670.It Sy bebox/ 671Be Inc. BeBox architecture 672.It Sy cats/ 673Chalice Technology StrongARM evaluation board 674.It Sy cesfic/ 675CES FIC8234 VME processor board 676.It Sy cobalt/ 677Cobalt Networks MIPS Microserver architecture 678.It Sy dreamcast/ 679Sega Dreamcast game console 680.It Sy evbsh3/ 681SH3 based evaluation boards 682.It Sy hp300/ 683Hewlett-Packard 9000/300 680x0-based workstations 684.It Sy hparm/ 685StrongARM based WinCE hand-held devices 686.It Sy hpcmips/ 687MIPS based WinCE hand-held devices 688.It Sy hpcsh/ 689Hitachi SH3/4 based WinCE hand-held devices 690.It Sy i386/ 691Intel 386/486/Pentium/etc. workstations 692.It Sy luna68k/ 693Omron LUNA 68000-based workstations 694.It Sy m68k/ 695680x0 processor support 696.It Sy mac68k/ 697Apple Computer 680x0-based workstations 698.It Sy macppc/ 699Apple Computer PowerPC-based workstations 700.It Sy mips/ 701MIPS processor support 702.It Sy mipsco/ 703Mips Computer Systems Inc. architecture 704.It Sy mmeye/ 705Brains Inc. SH3 based mmEye multimedia server 706.It Sy mvme68k/ 707VME 680x0-based cards 708.It Sy news68k/ 709Sony NEWS 680x0-based workstations 710.It Sy newsmips/ 711Sony NEWS MIPS-based workstations 712.It Sy next68k/ 713NeXT 680x0-based workstations 714.It Sy ofppc/ 715Open Firmware PowerPC workstations 716.It Sy pc532/ 717pc532 architecture 718.It Sy playstation2/ 719SONY PlayStation 2 720.It Sy pmax/ 721MIPS-based DECstation architecture 722.It Sy powerpc/ 723PowerPC processor support 724.It Sy prep/ 725PowerPC Reference Platform 726.It Sy sandpoint/ 727Motorola Sandpoint reference platform 728.It Sy sgimips/ 729SGI MIPS architecture 730.It Sy sh3/ 731SH3 processor general support 732.It Sy shark/ 733StrongARM based Digital DNARD ("Shark") machines 734.It Sy sparc/ 735Sun Microsystems SPARC architecture 736.It Sy sparc64/ 737Sun Microsystems UltraSPARC architecture 738.It Sy sun2/ 739Sun Microsystems 68010-based Sun 2 architecture 740.It Sy sun3/ 741Sun Microsystems 68020/68030-based Sun 3/3x architecture 742.It Sy sun68k/ 743680x0-based Sun architecture general support 744.It Sy vax/ 745Digital Equipment Corp. VAX architecture 746.It Sy walnut/ 747IBM 405GP PowerPC "walnut" evaluation board 748.It Sy x68k/ 749Sharp X680x0 680x0-based workstations 750.It Sy x86_64/ 751AMD x86-64(tm) 64-bit CPU 752.El 753.Pp 754.It Sy compat/ 755kernel compatibility modules directory 756.Pp 757.Bl -tag -width "ossaudio/" -compact 758.It Sy common/ 759common compatibility routines, old 760.Bx 4 761and 762.Nx 763routines. 764.It Sy freebsd/ 765support for 766.Fx 767binaries; see 768.Xr compat_freebsd 8 769.It Sy hpux/ 770support for 68000 HP-UX binaries 771.It Sy ibcs2/ 772support for Intel Binary binaries 773.It Sy linux/ 774support for Linux binaries; see 775.Xr compat_linux 8 776.It Sy m68k4k/ 777support for 4Kb page 68000 binaries 778.It Sy netbsd32/ 779support for 780.Nx 78132-bit binaries on 64 bit platforms with compatible CPU families 782.It Sy osf1/ 783support for 784.Tn Digital 785.Ux 786.Po 787formerly 788.Tn OSF/1 789.Pc 790binaries 791.It Sy ossaudio/ 792support for OSS audio 793.It Sy pecoff/ 794support for 795.Tn Win32 796binaries; see 797.Xr compat_pecoff 8 798.It Sy sunos/ 799support for 800.Tn SunOS 4.x 801binaries; see 802.Xr compat_sunos 8 803.It Sy svr4/ 804support for System V Release 4 binaries; see 805.Xr compat_svr4 8 806.It Sy ultrix/ 807support for 808.Tn Ultrix 809binaries 810.It Sy vax1k/ 811support for older Vax binaries that started on a 1 KB boundary 812.El 813.Pp 814.It Sy conf/ 815architecture independent configuration directory 816.It Sy crypto/ 817cryptographic kernel source, which may have import or export restrictions 818.It Sy ddb/ 819in kernel debugger 820.It Sy dev/ 821architecture independent device support 822.It Sy filecorefs/ 823support for the Acorn RISC OS filecore filesystem; see 824.Xr mount_filecore 8 825.It Sy gdbscripts/ 826support for accessing kernel structures from within the debugger 827.Xr gdb 1 . 828.It Sy ipkdb/ 829support for kernel debugging over the network 830.It Sy isofs/ 831support for ISO filesystems 832.Pp 833.Bl -tag -width "cd9660/" -compact 834.It Sy cd9660/ 835support for the ISO-9660 filesystem; see 836.Xr mount_cd9660 8 837.El 838.Pp 839.It Sy kern/ 840support for the high kernel (system calls) 841.It Sy lib/ 842kernel libraries 843.Pp 844.Bl -tag -width "libkern/" -compact 845.It Sy libkern/ 846C library routines used in the kernel 847.It Sy libsa/ 848machine independant stand alone kernel library 849.It Sy libz/ 850compression library 851.El 852.Pp 853.It Sy lkm/ 854loadable kernel modules 855.Pp 856.Bl -tag -width "gdbscripts/" -compact 857.It Sy compat/ 858LKM support compatibility modules; currently unsupported. 859.It Sy netinet/ 860LKM support networking modules 861.Pp 862.Bl -tag -width "if_ipl/" -compact 863.It Sy if_ipl/ 864LKM for IP-Filter 865.El 866.Pp 867.It Sy vfs/ 868LKM support for file systems. 869.El 870.Pp 871.It Sy miscfs/ 872miscellaneous file systems 873.Pp 874.Bl -tag -width "deadfs/" -compact 875.It Sy deadfs/ 876kernel only dead file system 877.It Sy fdesc/ 878file descriptor file system; see 879.Xr mount_fdesc 8 880.It Sy fifofs/ 881POSIX FIFO support 882.It Sy genfs/ 883kernel only generic file system 884.It Sy kernfs/ 885kernel namespace file system; see 886.Xr mount_kernfs 8 887.It Sy nullfs/ 888loop back file system; see 889.Xr mount_null 8 890.It Sy overlay/ 891overlay file system; see 892.Xr mount_overlay 8 893.It Sy portal/ 894portal file system; see 895.Xr mount_portal 8 896.It Sy procfs/ 897process file system; see 898.Xr mount_procfs 8 899.It Sy specfs/ 900kernel only special file system 901.It Sy syncfs/ 902kernel trickle sync algorithm 903.It Sy umapfs/ 904user and group re-mapping file system; see 905.Xr mount_umap 8 906.It Sy union/ 907union file system; see 908.Xr mount_union 8 909.El 910.Pp 911.It Sy msdosfs/ 912.Tn MS-DOS 913file system; see 914.Xr mount_msdos 8 915.It Sy net/ 916miscellaneous networking support 917.It Sy netatalk/ 918AppleTalk networking support 919.It Sy netccitt/ 920CCITT networking support 921.It Sy netinet/ 922IP networking support 923.It Sy netinet6/ 924IPv6 networking support 925.It Sy netiso/ 926ISO networking support 927.It Sy netkey/ 928Key database for IPsec networking support 929.It Sy netnatm/ 930ATM networking support 931.It Sy netns/ 932XNS networking support 933.It Sy nfs/ 934NFS support 935.It Sy ntfs/ 936NTFS filesystem support 937.It Sy stand/ 938kernel standalone support 939.It Sy sys/ 940kernel (and system) include files 941.It Sy ufs/ 942local filesystem support 943.Pp 944.Bl -tag -width "ffs/" -compact 945.It Sy ffs/ 946the Berkeley Fast File System 947.It Sy lfs/ 948the log-structured file system 949.It Sy mfs/ 950the in-memory file system 951.It Sy ufs/ 952shared 953.Ux 954file system support 955.El 956.It Sy uvm/ 957UVM virtual memory system 958.El 959.It Sy usr.bin/ 960source for utilities/files in 961.Pa /usr/bin 962.It Sy usr.sbin/ 963source for utilities/files in 964.Pa /usr/sbin 965.El 966.It Sy /var/ 967multi-purpose log, temporary, transient, and spool files 968.Pp 969.Bl -tag -width "preserve/" -compact 970.It Sy account/ 971system accounting files 972.Pp 973.Bl -tag -width "acct" -compact 974.It Sy acct 975execution accounting file; 976see 977.Xr acct 5 978.El 979.Pp 980.It Sy at/ 981timed command scheduling files; 982see 983.Xr at 1 984.It Sy backups/ 985miscellaneous backup files, largely of files found in 986.Pa /etc 987.It Sy chroot/ 988home directories of applications which are run in a 989.Xr chroot 8 990.Dq cage . 991.It Sy crash/ 992system crash dumps; see 993.Xr savecore 8 994.It Sy cron/ 995scheduled commands configuration files; see 996.Xr cron 8 997.It Sy db/ 998miscellaneous automatically generated system-specific database files 999.It Sy games/ 1000miscellaneous game status and log files 1001.It Sy heimdal/ 1002Kerberos 5 KDC database; see 1003.Xr kdc 8 1004.It Sy log/ 1005miscellaneous system log files 1006.Pp 1007.Bl -tag -width "monthly.out" -compact 1008.It Sy amd.* 1009.Xr amd 8 1010logs 1011.It Sy daily.out 1012output of the last run of the 1013.Pa /etc/daily 1014script 1015.It Sy ftp.* 1016.Xr ftp 1 1017logs 1018.It Sy kerberos.* 1019.Xr kerberos 8 1020logs 1021.It Sy lastlog 1022system last time logged in log; see 1023.Xr utmp 5 1024.It Sy lpd-errs.* 1025printer daemon error logs; see 1026.Xr lpd 8 1027.It Sy maillog.* 1028.Xr sendmail 8 1029log files 1030.It Sy messages.* 1031general system information log 1032.It Sy monthly.out 1033output of the last run of the 1034.Pa /etc/monthly 1035script 1036.It Sy secure 1037sensitive security information log 1038.It Sy sendmail.st 1039.Xr sendmail 8 1040statistics 1041.It Sy timed.* 1042.Xr timed 8 1043logs 1044.It Sy weekly.out 1045output of the last run of the 1046.Pa /etc/weekly 1047script 1048.It Sy wtmp 1049login/logout log; 1050see 1051.Xr utmp 5 1052.El 1053.Pp 1054.It Sy mail/ 1055user system mailboxes 1056.It Sy msgs/ 1057system messages; see 1058.Xr msgs 1 1059.\" since we use nvi (now called vi) this isn't the place any more, is it? 1060.It Sy pkg/ 1061working files for third party packages 1062.It Sy preserve/ 1063temporary home of files preserved after an accidental death of 1064.Xr ex 1 1065or 1066.Xr vi 1 1067.It Sy quotas/ 1068filesystem quota information 1069.It Sy run/ 1070system information files, rebuilt after each reboot 1071.Pp 1072.Bl -tag -width "utmp" -compact 1073.It Sy utmp 1074database of current users; see 1075.Xr utmp 5 1076.El 1077.Pp 1078.It Sy rwho/ 1079rwho data files; see 1080.Xr rwhod 8 , 1081.Xr rwho 1 , 1082and 1083.Xr ruptime 1 1084.It Sy spool/ 1085miscellaneous printer and mail system spooling directories 1086.Pp 1087.Bl -tag -width "uucppublic/" -compact 1088.It Sy ftp/ 1089commonly 1090.Dq ~ftp , 1091the anonymous ftp root directory; see 1092.Xr ftpd 8 1093.It Sy mqueue/ 1094undelivered mail queue; 1095see 1096.Xr sendmail 8 1097.It Sy news/ 1098Network news archival and spooling directories 1099.It Sy output/ 1100printer spooling directories 1101.It Sy uucp/ 1102uucp spool directory 1103.It Sy uucppublic/ 1104commonly 1105.Dq ~uucp , 1106the uucp public temporary directory; see 1107.Xr uucp 1 1108.El 1109.Pp 1110.It Sy tmp/ 1111temporary files that are not discarded between system reboots 1112.Pp 1113.Bl -tag -width "vi.recover/" -compact 1114.It Sy vi.recover/ 1115recovery directory for new 1116.Xr vi 1 1117.El 1118.It Sy yp/ 1119Databases and configuration for the NIS (YP) system; see 1120.Xr nis 8 . 1121.El 1122.El 1123.Sh SEE ALSO 1124.Xr apropos 1 , 1125.Xr ls 1 , 1126.Xr whatis 1 , 1127.Xr whereis 1 , 1128.Xr which 1 1129.Sh HISTORY 1130A 1131.Nm 1132manual page appeared in 1133.At v7 . 1134