Prof Andrew S. Tanenbaum (AST) Author of many OS and Network Books
and Creator of Minix & Amoeba OS. URL: http://www.cs.vu.nl/~ast/
One Day One Command
host — DNS Look-up Utility
host is a simple utility for performing DNS (Domain Name Service)
lookups. It is normally used to convert names to IP addresses and
$ host -v google.com — Show detailed output.
$ host -a google.com — Show more details.
$ host 127.0.0.1 — Do reverse lookup and Show the host name.
$ host -l mydomain.com — List all hosts available in MyDomain.
Read: man host