1afe61c15SRodney W. Grimes.\" Copyright (c) 1983, 1991, 1993 2afe61c15SRodney W. Grimes.\" The Regents of the University of California. All rights reserved. 3afe61c15SRodney W. Grimes.\" 4afe61c15SRodney W. Grimes.\" Redistribution and use in source and binary forms, with or without 5afe61c15SRodney W. Grimes.\" modification, are permitted provided that the following conditions 6afe61c15SRodney W. Grimes.\" are met: 7afe61c15SRodney W. Grimes.\" 1. Redistributions of source code must retain the above copyright 8afe61c15SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer. 9afe61c15SRodney W. Grimes.\" 2. Redistributions in binary form must reproduce the above copyright 10afe61c15SRodney W. Grimes.\" notice, this list of conditions and the following disclaimer in the 11afe61c15SRodney W. Grimes.\" documentation and/or other materials provided with the distribution. 12dda5b397SEitan Adler.\" 3. Neither the name of the University nor the names of its contributors 13afe61c15SRodney W. Grimes.\" may be used to endorse or promote products derived from this software 14afe61c15SRodney W. Grimes.\" without specific prior written permission. 15afe61c15SRodney W. Grimes.\" 16afe61c15SRodney W. Grimes.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17afe61c15SRodney W. Grimes.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18afe61c15SRodney W. Grimes.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19afe61c15SRodney W. Grimes.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20afe61c15SRodney W. Grimes.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21afe61c15SRodney W. Grimes.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22afe61c15SRodney W. Grimes.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23afe61c15SRodney W. Grimes.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24afe61c15SRodney W. Grimes.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25afe61c15SRodney W. Grimes.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26afe61c15SRodney W. Grimes.\" SUCH DAMAGE. 27afe61c15SRodney W. Grimes.\" 28*0090d182SGordon Bergling.Dd September 15, 2022 29afe61c15SRodney W. Grimes.Dt HOSTS 5 303d45e180SRuslan Ermilov.Os 31afe61c15SRodney W. Grimes.Sh NAME 32afe61c15SRodney W. Grimes.Nm hosts 33afe61c15SRodney W. Grimes.Nd host name data base 34afe61c15SRodney W. Grimes.Sh DESCRIPTION 35afe61c15SRodney W. GrimesThe 364b66483fSRuslan Ermilov.Nm 37afe61c15SRodney W. Grimesfile contains information regarding 38afe61c15SRodney W. Grimesthe known hosts on the network. 39248aee62SJacques VidrineIt can be used in conjunction with DNS, and the NIS 40248aee62SJacques Vidrinemaps `hosts.byaddr' and `hosts.byname', as controlled by 41248aee62SJacques Vidrine.Xr nsswitch.conf 5 . 42afe61c15SRodney W. GrimesFor each host a single line should be present 43afe61c15SRodney W. Grimeswith the following information: 44afe61c15SRodney W. Grimes.Bd -unfilled -offset indent 45afe61c15SRodney W. GrimesInternet address 467b3eb001SNate Williamsofficial host name 47afe61c15SRodney W. Grimesaliases 48afe61c15SRodney W. Grimes.Ed 49afe61c15SRodney W. Grimes.Pp 50afe61c15SRodney W. GrimesItems are separated by any number of blanks and/or 515203edcdSRuslan Ermilovtab characters. 525203edcdSRuslan ErmilovA ``#'' indicates the beginning of 53afe61c15SRodney W. Grimesa comment; characters up to the end of the line are 54afe61c15SRodney W. Grimesnot interpreted by routines which search the file. 55afe61c15SRodney W. Grimes.Pp 5654c22eeaSSergey KandaurovThis file provides a backup used when the name server 57afe61c15SRodney W. Grimesis not running. 58afe61c15SRodney W. GrimesFor the name server, it is suggested that only a few addresses 59afe61c15SRodney W. Grimesbe included in this file. 604043c58eSTim VanderhoekThese include addresses for the local interfaces that 61afe61c15SRodney W. Grimes.Xr ifconfig 8 62afe61c15SRodney W. Grimesneeds at boot time and a few machines on the local network. 63afe61c15SRodney W. Grimes.Pp 64a23b08cfSCeri DaviesNetwork addresses are specified in either the conventional 65a23b08cfSCeri Davies``.'' (dot) notation for IPv4 or colon hexadecimal notation for IPv6, 66a23b08cfSCeri Daviesas understood by the 67a23b08cfSCeri Davies.Xr inet_pton 3 68afe61c15SRodney W. Grimesroutine 69afe61c15SRodney W. Grimesfrom the Internet address manipulation library, 70afe61c15SRodney W. Grimes.Xr inet 3 . 71afe61c15SRodney W. GrimesHost names may contain any printable 72afe61c15SRodney W. Grimescharacter other than a field delimiter, newline, 73afe61c15SRodney W. Grimesor comment character. 74afe61c15SRodney W. Grimes.Sh FILES 75afe61c15SRodney W. Grimes.Bl -tag -width /etc/hosts -compact 76afe61c15SRodney W. Grimes.It Pa /etc/hosts 77afe61c15SRodney W. GrimesThe 784b66483fSRuslan Ermilov.Nm 79afe61c15SRodney W. Grimesfile resides in 80afe61c15SRodney W. Grimes.Pa /etc . 81afe61c15SRodney W. Grimes.El 82afe61c15SRodney W. Grimes.Sh SEE ALSO 83afe61c15SRodney W. Grimes.Xr gethostbyname 3 , 84a23b08cfSCeri Davies.Xr inet 3 , 85248aee62SJacques Vidrine.Xr nsswitch.conf 5 , 8654c22eeaSSergey Kandaurov.Xr ifconfig 8 87afe61c15SRodney W. Grimes.Sh HISTORY 88afe61c15SRodney W. GrimesThe 89afe61c15SRodney W. Grimes.Nm 90afe61c15SRodney W. Grimesfile format appeared in 91c22076b5SWarner Losh.Bx 4.1c . 92