Thank you for using mlu. Please enjoy working with it!
Markus
Whether you enter a domain or an IP address you will get appropriate results.
A small and easy to use script to do all the domain and IP address querying you need on a daily base.
If you are using mlu with a domain, it should look like this:
mlu charw.at
It will display something like this:
Displays MX-, NS-, WWW-records for domains or reverse queries for IP-addresses Query using ns1.orange.at. charw.at. 86400 IN NS ns2.campusspeicher.at. charw.at. 86400 IN NS ns1.campusspeicher.at. ns2.campusspeicher.at. 66855 IN A 89.200.169.10 ns1.campusspeicher.at. 66855 IN A 89.200.168.66 charw.at. 86400 IN MX 10 mail.charw.at. charw.at. 86400 IN MX 190 mail2.charw.at. charw.at. 86400 IN NS ns1.campusspeicher.at. charw.at. 86400 IN NS ns2.campusspeicher.at. mail2.charw.at. 86400 IN A 88.80.209.59 mail.charw.at. 86400 IN A 89.200.169.108 ns2.campusspeicher.at. 66855 IN A 89.200.169.10 ns1.campusspeicher.at. 66855 IN A 89.200.168.66 www.charw.at. 86400 IN A 89.200.169.108 serial = 1220283466 refresh = 10800
Depending the name server used, the result may vary, but basicaly ist will simalar to the on shown above.
If you are using mlu with an IP address, it could look like this:
mlu 89.200.169.108
The result may then look similar to the following
Displays MX-, NS-, WWW-records for domains or reverse queries for IP-addresses Query using ns1.orange.at. 108.169.200.89.in-addr.arpa name = server21.campusspeicher.de. 169.200.89.in-addr.arpa nameserver = reverse2.antagus.de. 169.200.89.in-addr.arpa nameserver = reverse.antagus.de.
Again, depending on the name server used, results may vary, but I guess, you get the point.
The script is currently using ns1.orange.at as default name server. If you want to use an alternate one, you might by entering your preferred server after the domain, simply separated by a space.
mlu charw.at res1.telekom.at
The result may then look similar to the following:
Displays MX-, NS-, WWW-records for domains or reverse queries for IP-addresses Query using res1.telekom.at. charw.at. 86400 IN NS ns2.campusspeicher.at. charw.at. 86400 IN NS ns1.campusspeicher.at. charw.at. 86400 IN MX 190 mail2.charw.at. charw.at. 86400 IN MX 10 mail.charw.at. mail2.charw.at. 86400 IN A 88.80.209.59 mail.charw.at. 86400 IN A 89.200.169.108 www.charw.at. 86400 IN A 89.200.169.108 serial = 1220283466 refresh = 10800
You may have noticed that this result varies from the first one as ns1.orange.at displays the IP-addresses of the nameserver whereas res1.telekom.at does not show these.
Further descriptions are marked as comments (#) directly in the script.
#!/bin/bash
# THE BEER-WARE LICENCE - charw.at/mlu
echo "Displays MX-, NS-, WWW-records for domains or reverse queries for IP-addresses."
mc5=0
mc6=0
mc6=$(echo `expr "$2" : '[a-zA-Z]'`)
if [ "$mc6" != "0" ]; then
mc5=$2
else
mc5=ns1.orange.at
fi
echo "Query using "$mc5"."
mc1=0
mc1=$(echo `expr "$1" : '.*[a-zA-Z]'`)
if [ "$mc1" = "0" ]; then
nslookup $1 -recurse $mc5 | grep -v Server | grep -v Address | grep -v 'answer:' | grep -v Authoritative
else
mc2=0
mc2=$(dig +noquestion @$mc5 $1 mx | grep -v ';')
mc3=0
mc3=$(echo `expr "$mc2" : '.*SOA'`)
dig +noquestion @$mc5 $1 ns | grep -v ';'
if [ "$mc3" != "0" ]; then
dig +noquestion @$mc5 $1 ns | grep -v ';'
echo "No MX record"
echo
else
dig +noquestion @$mc5 $1 mx | grep -v ';'
fi
dig @$mc5 www.$1 | grep -v ';' |grep www
dig @$mc5 $1 txt | grep "spf"
echo
nslookup -q=soa $1 $mc5 | grep serial
nslookup -q=soa $1 $mc5 | grep refresh
echo
fi
THE BEER-WARE LICENCE - <charw.at/mlu>
Copyright © Markus Charwat 2006-2012
As long as you retain this notice you can do whatever you want with mlu.
If we meet some day, and you think this stuff is worth it, you can buy me a beer in return.