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1.1 ! root 1: .\" Copyright (c) 1983 Regents of the University of California. ! 2: .\" All rights reserved. The Berkeley software License Agreement ! 3: .\" specifies the terms and conditions for redistribution. ! 4: .\" ! 5: .\" @(#)hosts.5 6.3 (Berkeley) 5/14/86 ! 6: .\" ! 7: .TH HOSTS 5 "May 14, 1986" ! 8: .UC 5 ! 9: .SH NAME ! 10: hosts \- host name data base ! 11: .SH DESCRIPTION ! 12: The ! 13: .I hosts ! 14: file contains information regarding ! 15: the known hosts on the network. ! 16: For each host a single line should be present ! 17: with the following information: ! 18: .HP 10 ! 19: official host name ! 20: .br ! 21: .ns ! 22: .HP 10 ! 23: Internet address ! 24: .br ! 25: .ns ! 26: .HP 10 ! 27: aliases ! 28: .PP ! 29: Items are separated by any number of blanks and/or ! 30: tab characters. A ``#'' indicates the beginning of ! 31: a comment; characters up to the end of the line are ! 32: not interpreted by routines which search the file. ! 33: .PP ! 34: When using the name server ! 35: .IR named (8), ! 36: this file provides a backup when the name server ! 37: is not running. ! 38: For the name server, it is suggested that only a few addresses ! 39: be included in this file. ! 40: These include address for the local interfaces that ! 41: .IR ifconfig (8C) ! 42: needs at boot time and a few machines on the local network. ! 43: .PP ! 44: This file may be created from the official host ! 45: data base maintained at the Network Information Control ! 46: Center (NIC), though local changes may be required ! 47: to bring it up to date regarding unofficial aliases ! 48: and/or unknown hosts. As the data base maintained at NIC ! 49: is incomplete, use of the name server is recommend for ! 50: sites on the DARPA Internet. ! 51: .PP ! 52: Network addresses are specified in the conventional ! 53: ``.'' notation using the \fIinet_addr\fP() routine ! 54: from the Internet address manipulation library, ! 55: .IR inet (3N). ! 56: Host names may contain any printable ! 57: character other than a field delimiter, newline, ! 58: or comment character. ! 59: .SH FILES ! 60: /etc/hosts ! 61: .SH "SEE ALSO" ! 62: gethostbyname(3N), ifconfig(8C), named(8) ! 63: .br ! 64: Name Server Operations Guide for BIND
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