projects / unix-history / blame
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|---|---|---|
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1 | .\" Copyright (c) 1983 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| 43624042 | 3 | .\" |
| 91cff1e1 | 4 | .\" %sccs.include.redist.man% |
| 954133cd | 5 | .\" |
| 91cff1e1 | 6 | .\" @(#)hosts.5 6.5 (Berkeley) %G% |
| 43624042 | 7 | .\" |
| 8612bf3c | 8 | .TH HOSTS 5 "" |
| 43624042 KM |
9 | .UC 5 |
| 10 | .SH NAME | |
| 11 | hosts \- host name data base | |
| 12 | .SH DESCRIPTION | |
| 13 | The | |
| 14 | .I hosts | |
| 15 | file contains information regarding | |
| df1ff6ff | 16 | the known hosts on the network. |
| 43624042 KM |
17 | For each host a single line should be present |
| 18 | with the following information: | |
| 19 | .HP 10 | |
| 20 | official host name | |
| 21 | .br | |
| 22 | .ns | |
| 23 | .HP 10 | |
| 24 | Internet address | |
| 25 | .br | |
| 26 | .ns | |
| 27 | .HP 10 | |
| 28 | aliases | |
| 29 | .PP | |
| 30 | Items are separated by any number of blanks and/or | |
| 31 | tab characters. A ``#'' indicates the beginning of | |
| 32 | a comment; characters up to the end of the line are | |
| 33 | not interpreted by routines which search the file. | |
| df1ff6ff JB |
34 | .PP |
| 35 | When using the name server | |
| 36 | .IR named (8), | |
| 37 | this file provides a backup when the name server | |
| 38 | is not running. | |
| 39 | For the name server, it is suggested that only a few addresses | |
| 40 | be included in this file. | |
| 41 | These include address for the local interfaces that | |
| 42 | .IR ifconfig (8C) | |
| 43 | needs at boot time and a few machines on the local network. | |
| 44 | .PP | |
| 45 | This file may be created from the official host | |
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46 | data base maintained at the Network Information Control |
| 47 | Center (NIC), though local changes may be required | |
| 48 | to bring it up to date regarding unofficial aliases | |
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49 | and/or unknown hosts. As the data base maintained at NIC |
| 50 | is incomplete, use of the name server is recommend for | |
| 51 | sites on the DARPA Internet. | |
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52 | .PP |
| 53 | Network addresses are specified in the conventional | |
| 54 | ``.'' notation using the \fIinet_addr\fP() routine | |
| 55 | from the Internet address manipulation library, | |
| 56 | .IR inet (3N). | |
| 57 | Host names may contain any printable | |
| 58 | character other than a field delimiter, newline, | |
| 59 | or comment character. | |
| 60 | .SH FILES | |
| 61 | /etc/hosts | |
| 62 | .SH "SEE ALSO" | |
| df1ff6ff JB |
63 | gethostbyname(3N), ifconfig(8C), named(8) |
| 64 | .br | |
| 65 | Name Server Operations Guide for BIND |