1 - host

Looks up the IP numbers associated with host names. Shows:
* Iterating through the command line arguments
* Resolving a host name to an IP address.
* Displaying IP addresses.
* Processing exceptions.

    $ host www.felspar.com www.kirit.com
    host
    Copyright (c) 2008 Felspar Co. Ltd.
    www.felspar.com -> 203.151.233.117
    www.kirit.com -> 87.106.200.12