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<!DOCTYPE html>
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<title>Getting your Public IP from the Terminal</title>
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Getting your Public IP from the Terminal
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<abbr class="published" title="2014-06-21T02:00:00">
Sat 21 June 2014 </abbr>
<span class="label"> Category</span>
<a href="./category/networking.html"><i class="icon-folder-open"></i>Networking</a>
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<a href="./tag/linux-ip.html"><i class="icon-tag"></i>Linux IP</a>
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<p>Public IPv4 addresses are assigned by <a href="https://en.wikipedia.org/?title=InterNIC">NIC</a> and belongs to <a href="https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing">CIDR blocks</a> that are unique to the entire internet. </p>
<p>In this little post I show many ways to find your public IP address form the Linux terminal. </p>
<h3>Using Curl</h3>
<p>You can simply curl it from IP websites:</p>
<div class="highlight"><pre><span class="nv">$ </span> curl ifconfig.me
</pre></div>
<p>You might want to get more details (such as remote_host) with:</p>
<div class="highlight"><pre><span class="nv">$ </span>curl ifconfig.me/all
</pre></div>
<p>Other destination that also works: ipinfo.io/ip. Curling ipinfo.io is also great to get information about the Geographical Location of a provided IP address.</p>
<h3>Using wget</h3>
<p>Similary to curl:</p>
<div class="highlight"><pre><span class="nv">$ </span>wget http://observebox.com/ip -O - -q ; <span class="nb">echo</span>
</pre></div>
<h3>Using dig and host</h3>
<p>Another nice way to find the IP:</p>
<div class="highlight"><pre><span class="nv">$ </span>host -t a dartsclink.com | sed <span class="s1">'s/.*has address //'</span>
dig +short myip.opendns.com @resolver1.opendns.com
</pre></div>
<h3>If you use DynDNS</h3>
<p>Finally, if you have a <a href="http://dyn.com/dns/">DynDNS</a> configuration:</p>
<div class="highlight"><pre><span class="nv">$ </span>curl -s http://checkip.dyndns.org/ | grep -o <span class="s2">"[[:digit:].]\+"</span>
</pre></div>
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