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1 | .\" Copyright (c) 1983 The Regents of the University of California. |
2 | .\" All rights reserved. | |
4ee2fd4d | 3 | .\" |
b15837aa | 4 | .\" %sccs.include.redist.man% |
6a22fdb8 | 5 | .\" |
b15837aa | 6 | .\" @(#)htable.8 6.5 (Berkeley) %G% |
4ee2fd4d | 7 | .\" |
bfd81b5b | 8 | .TH HTABLE 8 "" |
4ee2fd4d KM |
9 | .UC 5 |
10 | .SH NAME | |
11 | htable \- convert NIC standard format host tables | |
12 | .SH SYNOPSIS | |
b15837aa | 13 | .B htable |
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14 | [ |
15 | .B \-c | |
16 | .I connected-nets | |
17 | ] [ | |
18 | .B \-l | |
19 | .I local-nets | |
20 | ] | |
21 | .I file | |
22 | .SH DESCRIPTION | |
23 | .I Htable | |
24 | is used to convert host files in the format specified | |
25 | in Internet RFC 810 to the format used by the network | |
26 | library routines. Three files are created as a result | |
27 | of running | |
28 | .IR htable : | |
29 | .IR hosts , | |
30 | .IR networks , | |
31 | and | |
32 | .IR gateways . | |
33 | The | |
34 | .I hosts | |
0479c228 | 35 | file may be used by the |
a96bccf5 | 36 | .IR gethostbyname (3N) |
0479c228 MK |
37 | routines in mapping host names to addresses |
38 | if the nameserver, | |
39 | .IR named (8), | |
40 | is not used. | |
4ee2fd4d KM |
41 | The |
42 | .I networks | |
43 | file is used by the | |
44 | .IR getnetent (3N) | |
45 | routines in mapping network names to numbers. | |
46 | The | |
47 | .I gateways | |
0479c228 | 48 | file may be used by the routing daemon |
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49 | in identifying ``passive'' Internet gateways; |
50 | see | |
51 | .IR routed (8C) | |
52 | for an explanation. | |
53 | .PP | |
54 | If any of the files | |
55 | .IR localhosts , | |
56 | .IR localnetworks , | |
57 | or | |
58 | .I localgateways | |
59 | are present in the current directory, | |
60 | the file's contents is prepended to the | |
61 | output file. | |
62 | Of these, only the gateways file is interpreted. | |
63 | This allows sites to maintain local aliases and | |
64 | entries which are not normally present in the | |
65 | master database. | |
66 | Only one gateway to each network will be placed in the gateways file; | |
67 | a gateway listed in the localgateways file will override any in the | |
68 | input file. | |
69 | .PP | |
0479c228 MK |
70 | If the gateways file is to be used, |
71 | a list of networks to which the host is directly connected | |
72 | is specified with the | |
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73 | .B \-c |
74 | flag. | |
75 | The networks, separated by commas, | |
0479c228 | 76 | may be given by name or in Internet-standard dot notation, |
4ee2fd4d KM |
77 | e.g. |
78 | .B \-c | |
79 | arpanet,128.32,local-ether-net. | |
80 | .I Htable | |
81 | only includes gateways | |
82 | which are directly connected to one of the networks specified, | |
83 | or which can be reached from another gateway on a connected net. | |
84 | .PP | |
85 | If the | |
86 | .B \-l | |
87 | option is given with a list of networks (in the same format as for | |
88 | .BR \-c ), | |
89 | these networks will be treated as ``local,'' | |
90 | and information about hosts on local networks is | |
91 | taken only from the localhosts file. | |
92 | Entries for local hosts from the main database will be omitted. | |
93 | This allows the localhosts file to completely override | |
94 | any entries in the input file. | |
95 | .PP | |
96 | .I Htable | |
97 | is best used in conjunction with the | |
6a22fdb8 | 98 | .IR gettable (8) |
4ee2fd4d KM |
99 | program which retrieves the NIC database from a host. |
100 | .SH "SEE ALSO" | |
6a22fdb8 | 101 | netintro(4), gettable(8), named(8) |
0479c228 MK |
102 | .SH BUGS |
103 | If the name-domain system provided network name mapping well as host | |
104 | name mapping, | |
105 | .I htable | |
106 | would no longer be needed. |