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DIG-Anweisungen

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Anfragen an einen Name-Server können in folgender Form gestellt werden:

/dig @server name type

server

Name bzw. IP-Adresse des zu verwendenden Name-Servers;
falls keine Angabe erfolgt, werden die entsprechenden Informationen aus der Resolver-Konfigurationsdatei verwendet;

name

Name des Resource Records, für den die gewünschte Information beschafft werden soll;

type

Typ der Anfrage;
zulässig ist jeder definierte Resource Record Typ wie "A", "PTR", "ANY";
falls keine Angabe erfolgt, wird Typ "A" verwendet;

Zur detaillierten Auflistung der möglichen Argumente steht in DIG die help-Funktion zur Verfügung (siehe Beispiel 3).

  
Beispiel 1

/dig mgp4711a.mgp.example.net a
:
mgp4711a.mgp.example.net. 10800 IN A 171.10.11.12
/dig mgp4711a.mgp.example.net aaaa
:
mgp4711a.mgp.example.net 10800 IN AAAA 3ffe:1:1000:2000:260:6dff:fe93:8c15

   
Beispiel 2

/dig -x 171.10.11.12 (Kurzform des folgenden Kommandos)

/dig 12.11.10.171.IN-ADDR.ARPA. PTR
:
171.12.11.10.IN-ADDR.ARPA. 10800 IN PTR mgp4711a.mgp.example.net.

/dig -x 3ffe:1:1000:2000:260:6dff:fe93:8c15 (Kurzform des folgenden Kommandos)

/dig 
5.1.c.8.3.9.e.f.f.f.d.6.0.6.2.0.0.0.0.2.0.0.0.1.1.0.0.0.e.f.f.3.ip6.arpa. PTR
:
5.1.c.8.3.9.e.f.f.f.d.6.0.6.2.0.0.0.0.2.0.0.0.1.1.0.0.0.e.f.f.3.ip6.arpa. 
10800 IN PTR mtp4711a.mgp.example.net


Beispiel 3

dig -h liefert die Hilfeinformation zum Programm dig:

/dig -h
:
Usage:   dig [@global-server] [domain] [q-type] [q-class] {q-opt}
             {global-d-opt} host [@local-server] {local-d-opt}
             [ host [@local-server] {local-d-opt} [...]]
Where:   domain   is in the Domain Name System
         q-class  is one of (in,hs,ch,...) [default: in]
         q-type   is one of (a,any,mx,ns,soa,hinfo,axfr,txt,...) [default:a]
                  (Use ixfr=version for type ixfr)
         q-opt    is one of:
                  -x dot-notation     (shortcut for reverse lookups)
                  -i                  (use IP6.INT for IPv6 reverse lookups)
                  -f filename         (batch mode)
                  -b address[#port]   (bind to source address/port)
                  -p port             (specify port number)
                  -q name             (specify query name)
                  -t type             (specify query type)
                  -c class            (specify query class)
                  -k keyfile          (specify tsig key file)
                  -y [hmac:]name:key  (specify named base64 tsig key)
                  -4                  (use IPv4 query transport only)
                  -6                  (use IPv6 query transport only)
         d-opt    is of the form +keyword[=value], where keyword is:
                  +[no]vc             (TCP mode)
                  +[no]tcp            (TCP mode, alternate syntax)
                  +time=###           (Set query timeout) [5]
                  +tries=###          (Set number of UDP attempts) [3]
                  +retry=###          (Set number of UDP retries) [2]
                  +domain=###         (Set default domainname)
                  +bufsize=###        (Set EDNS0 Max UDP packet size)
                  +ndots=###          (Set NDOTS value)
                  +edns=###           (Set EDNS version)
                  +[no]search         (Set whether to use searchlist)
                  +[no]showsearch     (Search with intermediate results)
                  +[no]defname        (Ditto)
                  +[no]recurse        (Recursive mode)
                  +[no]ignore         (Don't revert to TCP for TC responses.)
                  +[no]fail           (Don't try next server on SERVFAIL)
                  +[no]besteffort     (Try to parse even illegal messages)
                  +[no]aaonly         (Set AA flag in query (+[no]aaflag))
                  +[no]adflag         (Set AD flag in query)
                  +[no]cdflag         (Set CD flag in query)
                  +[no]cl             (Control display of class in records)
                  +[no]cmd            (Control display of command line)

                  +[no]comments       (Control display of comment lines)
                  +[no]question       (Control display of question)
                  +[no]answer         (Control display of answer)
                  +[no]authority      (Control display of authority)
                  +[no]additional     (Control display of additional)
                  +[no]stats          (Control display of statistics)
                  +[no]short          (Disable everything except short form of answer)
                  +[no]ttlid          (Control display of ttls in records)
                  +[no]all            (Set or clear all display flags)
                  +[no]qr             (Print question before sending)
                  +[no]nssearch       (Search all authoritative nameservers)
                  +[no]identify       (ID responders in short answers)
                  +[no]trace          (Trace delegation down from root)
                  +[no]dnssec         (Request DNSSEC records)
                  +[no]multiline      (Print records in an expanded format)
         global d-opts and servers (before host name) affect all queries.
         local d-opts and servers (after host name) affect only that lookup.
         -h                           (print help and exit)
         -v                           (print version and exit)