1HOSTS(5) File Formats Manual HOSTS(5)
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6 hosts - host name data base
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9 The hosts file contains information regarding the known hosts on the
10 network. For each host a single line should be present with the fol‐
11 lowing information:
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13 official host name
14 Internet address
15 aliases
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17 Items are separated by any number of blanks and/or tab characters. A
18 ``#'' indicates the beginning of a comment; characters up to the end of
19 the line are not interpreted by routines which search the file.
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21 When using the name server named(8), this file provides a backup when
22 the name server is not running. For the name server, it is suggested
23 that only a few addresses be included in this file. These include
24 address for the local interfaces that ifconfig(8C) needs at boot time
25 and a few machines on the local network.
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27 This file may be created from the official host data base maintained at
28 the Network Information Control Center (NIC), though local changes may
29 be required to bring it up to date regarding unofficial aliases and/or
30 unknown hosts. As the data base maintained at NIC is incomplete, use
31 of the name server is recommend for sites on the DARPA Internet.
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33 Network addresses are specified in the conventional ``.'' notation
34 using the inet_addr() routine from the Internet address manipulation
35 library, inet(3N). Host names may contain any printable character
36 other than a field delimiter, newline, or comment character.
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39 /etc/hosts
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42 gethostbyname(3N), ifconfig(8C), named(8)
43 Name Server Operations Guide for BIND
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474.2 Berkeley Distribution May 14, 1986 HOSTS(5)