1 .\" Copyright (c) 1995, 1996
2 .\" Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved.
4 .\" Redistribution and use in source and binary forms, with or without
5 .\" modification, are permitted provided that the following conditions
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14 .\" This product includes software developed by Bill Paul
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36 .Nd "generate the NIS databases"
48 .Op Fl o Ar outputfile
49 .Op Fl d Ar domainname
50 .Op Fl m Ar mastername
58 style databases for use with
63 utility reads data from
69 format (using the hash table method).
70 The input should be in 'key data' format, which is to say
73 data separated by white space.
75 is assumed to be the key, and everything else is assumed to be
77 These databases are typically stored in
78 .Pa /var/yp/[domainname]
81 is the name of the NIS domain being served.
84 utility is usually invoked by
85 .Pa /var/yp/Makefile .
88 utility can also be used to dump an NIS database file so that its
89 contents can be examined.
90 For security reasons, all databases that
92 creates are readable and writable by owner only (and usually the
95 The following options are available:
96 .Bl -tag -width indent
100 to send a YPPROC_CLEAR request to
103 This signal tells the server to close any open
104 database descriptors and flush out its database cache.
106 this flag signals the server and does nothing else.
108 of a database creation command,
110 will send the signal only after the new database has been successfully
115 to add a special entry to the database with a key of
117 and an empty data field.
118 If this key is present in a map, it alters the
119 behavior of the 'match' procedure in
122 If a match query fails (because the server could not find
123 a record that matched the supplied key), and the
125 key exists within the queried map,
127 will try to match the entry again using a DNS lookup.
129 special behavior only applies to the
134 flag for other maps has no effect.
136 This flag is used to add a special entry to the database with a key of
138 and an empty data field.
139 If this key is present in a map,
141 will deny access to the map to any client that is not using a
142 reserved port for its query.
143 This is used mainly for the
145 maps, which should be restricted to privileged access only.
147 This flag is used to turn on filtering of lines in the source file
148 input that start with ``+'' or ``-'' characters.
150 have special meaning for the
155 maps and hence should not be allowed to appear in them as the first
156 character of a key or datum.
161 will reject any source line that starts with a ``+'' or ``-''
162 character and issue a warning message displaying the line that
165 Dump (or 'unwind') an NIS database.
166 This option can be used to
167 inspect the contents of an existing NIS database.
168 .It Fl i Ar inputfile
169 When generating an NIS map, encode
171 as a special entry in the database with a key of
173 .It Fl o Ar outputfile
174 When generating an NIS map, encode
176 as a special entry in the database with a key of
178 .It Fl d Ar domainname
179 When generating an NIS map, encode
181 as a special entry in the database with a key of
183 .It Fl m Ar mastername
184 When generating an NIS map, encode
186 as a special entry in the database with a key of
188 This entry in the database is frequently used by various NIS utilities
189 to determine the name of an NIS master server for a domain.
192 assumes that the local host is the NIS master; the
194 option is used to override this default.
197 .Bl -tag -width /var/yp/Makefile -compact
198 .It Pa /var/yp/Makefile
199 the Makefile that calls
201 to build the NIS databases
207 .An Bill Paul Aq Mt wpaul@ctr.columbia.edu