dig - DNS lookup utility
To perform a DNS lookup
$ dig ilugc.in
$ dig @8.8.8.8 google.com
To display only the IP address associated with the domain name
$ dig google.com +short
$ dig ilugc.in +short
The +trace option lists each different server the query goes through to its
final destination
$ dig google.com +trace
To look up a domain name by its IP address
$ dig -x yy.zz.aa.bb
yy.zz.aa.bb ip address
Batch Mode for Reading Host Names From a File
store domain names in domain.txt and give input to dig command
$ dig -f domain.txt +short
regards,
T.Dhanasekar
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