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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38 .Nd "generate the NIS databases"
50 .Op Fl o Ar outputfile
51 .Op Fl d Ar domainname
52 .Op Fl m Ar mastername
60 style databases for use with
65 utility reads data from
71 format (using the hash table method).
72 The input should be in 'key data' format, which is to say
75 data separated by white space.
77 is assumed to be the key, and everything else is assumed to be
79 These databases are typically stored in
80 .Pa /var/yp/[domainname]
83 is the name of the NIS domain being served.
86 utility is usually invoked by
87 .Pa /var/yp/Makefile .
90 utility can also be used to dump an NIS database file so that its
91 contents can be examined.
92 For security reasons, all databases that
94 creates are readable and writable by owner only (and usually the
97 The following options are available:
98 .Bl -tag -width indent
102 to send a YPPROC_CLEAR request to
105 This signal tells the server to close any open
106 database descriptors and flush out its database cache.
108 this flag signals the server and does nothing else.
110 of a database creation command,
112 will send the signal only after the new database has been successfully
117 to add a special entry to the database with a key of
119 and an empty data field.
120 If this key is present in a map, it alters the
121 behavior of the 'match' procedure in
124 If a match query fails (because the server couldn't find
125 a record that matched the supplied key), and the
127 key exists within the queried map,
129 will try to match the entry again using a DNS lookup.
131 special behavior only applies to the
136 flag for other maps has no effect.
138 This flag is used to add a special entry to the database with a key of
140 and an empty data field.
141 If this key is present in a map,
143 will deny access to the map to any client that is not using a
144 reserved port for its query.
145 This is used mainly for the
147 maps, which should be restricted to privileged access only.
149 This flag is used to turn on filtering of lines in the source file
150 input that start with ``+'' or ``-'' characters.
152 have special meaning for the
157 maps and hence should not be allowed to appear in them as the first
158 character of a key or datum.
163 will reject any source line that starts with a ``+'' or ``-''
164 character and issue a warning message displaying the line that
167 Dump (or 'unwind') an NIS database.
168 This option can be used to
169 inspect the contents of an existing NIS database.
170 .It Fl i Ar inputfile
171 When generating an NIS map, encode
173 as a special entry in the database with a key of
175 .It Fl o Ar outputfile
176 When generating an NIS map, encode
178 as a special entry in the database with a key of
180 .It Fl d Ar domainname
181 When generating an NIS map, encode
183 as a special entry in the database with a key of
185 .It Fl m Ar mastername
186 When generating an NIS map, encode
188 as a special entry in the database with a key of
190 This entry in the database is frequently used by various NIS utilities
191 to determine the name of an NIS master server for a domain.
194 assumes that the local host is the NIS master; the
196 option is used to override this default.
199 .Bl -tag -width /var/yp/Makefile -compact
200 .It Pa /var/yp/Makefile
201 the Makefile that calls
203 to build the NIS databases
209 .An Bill Paul Aq wpaul@ctr.columbia.edu