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1.1 root 1: .TH QNS 7
2: .CT 1 sa_auto
3: .SH NAME
4: qns \- query name server
5: .SH SYNOPSIS
6: .B qns
7: [
8: .B -n
9: .I server
10: ] [
11: .I request
12: ]
13: .SH DESCRIPTION
14: .I Qns
15: retrieves information from
16: a database of naming information.
17: It is used by
18: .I rsh
19: and
20: .I rlogin
21: (see
22: .IR dcon (1))
23: to translate names to internet addresses and by
24: .IR mail (1)
25: to route electronic mail.
26: .PP
27: Entries in the database
28: consist of one or more
29: .IB value , type
30: pairs or simple
31: .I values.
32: A simple
33: .I value
34: declares the name of some entity.
35: An entry may contain no name
36: or several, and
37: different entries containing the same name
38: need not refer to the same entity.
39: .PP
40: These types are used:
41: .PP
42: .TF origin
43: .TP
44: .B dk
45: .I Value
46: is a Datakit address.
47: .TP
48: .B in
49: .I Value
50: is a numeric IP address.
51: .TP
52: .B dom
53: .I Value
54: is an internet domain name.
55: .TP
56: .B tel
57: .I Value
58: is a telephone number,
59: possibly prefixed by a
60: .I uucp
61: .B Dialcodes
62: name.
63: .TP
64: .B org
65: .I Value
66: is an organization name.
67: .TP
68: .B svc
69: .I Value
70: names a service.
71: .TP
72: .B origin
73: .I Value
74: must be
75: .BR local ,
76: for sorting by `distance';
77: see below.
78: .PD
79: .PP
80: The following entries describe an entity
81: .B research
82: with a Datakit address,
83: an IP address and domain name,
84: belonging to organization
85: .BR att ,
86: and offering the
87: .B uucp
88: service:
89: .IP
90: .EX
91: 192.11.4.55,in research research.astro.nj.att.com.,dom att,org
92: research nj/astro/research,dk uucp,svc att,org
93: .EE
94: .PP
95: .I Qns
96: prints database entries that match
97: .I requests.
98: If a
99: .IR request
100: is supplied on the command line,
101: .I qns
102: prints the answer and exits;
103: otherwise it reads and answers requests from the standard input
104: until end-of-file.
105: The possible requests are:
106: .TP
107: .BI set " key" ...
108: Print every entry
109: matching
110: all
111: .IR keys .
112: .TP
113: .BI value " tlist key" ...
114: Examine entries matching
115: the
116: .IR keys
117: until a pair with type
118: .I tlist
119: is found;
120: print the matching value
121: and stop.
122: .I Tlist
123: may be a single type,
124: or several separated by
125: .LR | .
126: .TP
127: .B reset
128: Cause the name server
129: to reinitialize its database.
130: .TP
131: .B help
132: Print a list of requests.
133: .TP
134: .B quit
135: Exit
136: .IR qns .
137: .PD
138: .PP
139: A
140: .I key
141: is a
142: .IB value , type
143: pair;
144: an entry matches if it contains that pair.
145: If
146: .BI , type
147: is omitted,
148: any pair with the specified
149: .I value
150: will do.
151: A
152: .B *
153: at the end of a
154: .I value
155: stands for an arbitrary suffix.
156: .PP
157: When a database search
158: returns several entries with
159: .B dk
160: or
161: .B dom
162: types, and the database contains an entry with the conventional pair
163: .BR local,origin ,
164: the entries are sorted by increasing `distance'
165: from the
166: .B dk
167: or
168: .B dom
169: pairs in the
170: .B local,origin
171: entry.
172: Datakit names in the same exchange are nearer
173: than names in different exchanges in the same area,
174: which are nearer than names in different areas.
175: Domain names matching to four levels of domain hierarchy
176: are nearer than names matching to only three levels,
177: and so on.
178: .PP
179: .I Qns
180: expects to reach the name server
181: .IR ns (8);
182: option
183: .B -n
184: points it at service
185: .I server
186: instead.
187: .SH SEE ALSO
188: .IR ipc (3),
189: .IR ns (8)
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