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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.
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