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| .TH ADIG "1" "April 2011" "c-ares utilities" | |
| .SH NAME | |
| adig \- print information collected from Domain Name System (DNS) servers | |
| .SH SYNOPSIS | |
| .B adig | |
| [\fIOPTION\fR]... \fINAME\fR... | |
| .SH DESCRIPTION | |
| .PP | |
| .\" Add any additional description here | |
| .PP | |
| Send queries to DNS servers about \fINAME\fR and print received | |
| information, where \fINAME\fR is a valid DNS name (e.g. www.example.com, | |
| 1.2.3.10.in-addr.arpa). | |
| .PP | |
| This utility comes with the \fBc\-ares\fR asynchronous resolver library. | |
| .SH OPTIONS | |
| .TP | |
| \fB\-c\fR class | |
| Set the query class. | |
| Possible values for class are | |
| ANY, CHAOS, HS and IN (default). | |
| .TP | |
| \fB\-d\fR | |
| Print some extra debugging output. | |
| .TP | |
| \fB\-f\fR flag | |
| Add a behavior control flag. | |
| Possible values for flag are | |
| igntc - ignore to query in TCP to get truncated UDP answer, | |
| noaliases - don't honor the HOSTALIASES environment variable, | |
| norecurse - don't query upstream servers recursively, | |
| primary - use the first server, | |
| stayopen - don't close the communication sockets, and | |
| usevc - always use TCP. | |
| .TP | |
| \fB\-h\fR, \fB\-?\fR | |
| Display this help and exit. | |
| .TP | |
| \fB\-s\fR server | |
| Connect to specified DNS server, instead of the system's default one(s). | |
| Servers are tried in round-robin, if the previous one failed. | |
| .TP | |
| \fB\-t\fR type | |
| Query records of specified type. | |
| Possible values for type are | |
| A (default), AAAA, AFSDB, ANY, AXFR, CNAME, GPOS, HINFO, ISDN, KEY, LOC, MAILA, | |
| MAILB, MB, MD, MF, MG, MINFO, MR, MX, NAPTR, NS, NSAP, NSAP_PTR, NULL, | |
| PTR, PX, RP, RT, SIG, SOA, SRV, TXT, URI, WKS and X25. | |
| .TP | |
| \fB\-T\fR port | |
| Connect to the specified TCP port of DNS server. | |
| .TP | |
| \fB\-U\fR port | |
| Connect to the specified UDP port of DNS server. | |
| .TP | |
| \fB\-x\fR | |
| For an IPv4 \fB-t PTR a.b.c.d\fR lookup, query for | |
| .br | |
| \fBd.c.b.a.in-addr.arpa.\fR | |
| This more often gives correct names in the \fBANSWER\fR. | |
| .br | |
| For an IPv6 \fB-t PTR addr\fR lookup, query for \fBa.b.c....z.IP6.ARPA.\fR | |
| .TP | |
| \fB\-xx\fR | |
| As for \fB-x\fR and an IPv6 address, compact \fBa.b.c....z.IP6.ARPA.\fR into a RFC-2673 bit-string. | |
| This compacted \fBbit-string\fR form is not supported by many DNS-servers. | |
| .SH "REPORTING BUGS" | |
| Report bugs to the c-ares mailing list: | |
| .br | |
| \fBhttps://lists.haxx.se/listinfo/c-ares\fR | |
| .SH "SEE ALSO" | |
| .PP | |
| acountry(1), ahost(1). | |
| .SH COPYRIGHT | |
| This utility is based on code/ideas contained in sofware written by Greg Hudson (ares) | |
| carrying the following notice: | |
| .br | |
| Copyright 1998 by the Massachusetts Institute of Technology. | |
| .br | |
| Permission to use, copy, modify, and distribute this software and its | |
| documentation for any purpose and without fee is hereby granted, | |
| provided that the above copyright notice appear in all copies and that | |
| both that copyright notice and this permission notice appear in | |
| supporting documentation, and that the name of M.I.T. not be used in | |
| advertising or publicity pertaining to distribution of the software | |
| without specific, written prior permission. M.I.T. makes no | |
| representations about the suitability of this software for any | |
| purpose. It is provided "as is" without express or implied warranty. | |
| .br | |
| No further copyright claims are being made by the author(s) of this utility. | |