title: How to use command line to get whois information?
body: <p>I have a large text file on my server that has a list of domains in it that I need to get the contact information for.  Here's an example of that's showing up for me when I run whois on stackoverflow.com:</p>
  
  <pre><code>root@server [~]# whois stackoverflow.com
  [Querying whois.verisign-grs.com]
  [Redirected to whois.name.com]
  [Querying whois.name.com]
  [whois.name.com]
  
  __   _                             ____
  | \ | | __ _ _ __ ___   ___       / ___|___  _ __ ___
  |  \| |/ _` | '_ ` _ \ / _ \     | |   / _ \| '_ ` _ \
  | |\  | (_| | | | | | |  __/  _  | |__| (_) | | | | | |
  |_| \_|\__,_|_| |_| |_|\___| (_)  \____\___/|_| |_| |_|
        On a first name basis with the rest of the world.
  
  
  Get your &lt;a href="http://www.name.com"&gt;domains&lt;/a&gt; at Name.com.
  
  
  Domain Name:     stackoverflow.com
  Registrar:       Name.com LLC
  
  Expiration Date: 2015-12-26 19:18:07
  Creation Date:   2003-12-26 19:18:07
  
  Name Servers:
          ns1.serverfault.com
          ns2.serverfault.com
          ns3.serverfault.com
          ns4.serverfault.com
  
  REGISTRANT CONTACT INFO
  Stack Exchange, Inc.
  Sysadmin Team
  1 Exchange Plaza
  Floor 26
  New York
  NY
  10006
  US
  Phone:         +1.2122328280
  Email Address: sysadmin-team@stackoverflow.com
  
  ADMINISTRATIVE CONTACT INFO
  Stack Exchange, Inc.
  Sysadmin Team
  1 Exchange Plaza
  Floor 26
  New York
  NY
  10006
  US
  Phone:         +1.2122328280
  Email Address: sysadmin-team@stackoverflow.com
  
  TECHNICAL CONTACT INFO
  Stack Exchange, Inc.
  Sysadmin Team
  1 Exchange Plaza
  Floor 26
  New York
  NY
  10006
  US
  Phone:         +1.2122328280
  Email Address: sysadmin-team@stackoverflow.com
  
  BILLING CONTACT INFO
  Stack Exchange, Inc.
  Sysadmin Team
  1 Exchange Plaza
  Floor 26
  New York
  NY
  10006
  US
  Phone:         +1.2122328280
  Email Address: sysadmin-team@stackoverflow.com
  
  Timestamp: 1363827248.6992
  
  The Data in the Name.com LLC WHOIS database is provided by Name.com LLC for information purposes, and to assist persons in obtaining information about or related to a domain name registration record.  Name.com LLC does not guarantee its accuracy.  By submitting a WHOIS query, you agree that you will use this Data only for lawful purposes and that, under no circumstances will you use this Data to:  (1) allow, enable, or otherwise support the transmission of mass unsolicited, commercial advertising or solicitations via e-mail (spam); or (2) enable high volume, automated, electronic processes that apply to Name.com LLC (or its systems). Name.com LLC reserves the right to modify these terms at any time.  By submitting this query, you agree to abide by this policy.
  
  Cached on: 2013-03-20T18:54:08-06:00
  </code></pre>
  
  <p>What I need to do is extract certain information from each query.  The problem is that I don't understand how to extract just the contact emails from each domain whois because each whois result is different depending on the registrar.</p>
  
  <p>For example, this is how I'd like it to work:</p>
  
  <p>Through command line my server should check the whois information for each domain name and export all the results to a new text file that would just contain the email addresses for the owners of the domain name.  The name of the file containing all the domains is domains.txt and I would like the new file to be named new.txt if possible.</p>
  
  <p>Any help with this would be greatly appreciated.  Thanks in advance!</p>