Howto Check you external IP Address from the command line
Posted by admin on November 7th, 2007 
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For this, you need the packages wget, grep and sed so make sure you have them by checking for them in Synaptic or running the following in a terminal
sudo apt-get install wget grep sed
Then, as long as whatismyip.com prints out the IP-Address in the HTML page title, you can use this.
Create shell script
cd ~
mkdir bin
vi bin/whatismyip.sh
Insert the following lines into the file
#!/bin/bash
echo Your external IP Address is:
wget http://Www.whatismyip.com -O - -o /dev/null | grep '<TITLE>' | sed -r 's/<TITLE>WhatIsMyIP\.com \- //g' | sed -r 's/<\/TITLE>//g'
exit 0
Save and exit the file
Now you need to change the permissions using the following command
chmod u+x bin/whatismyip.sh
Now you can check your external IP Address by running
~/bin/whatismyip.sh
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December 8th, 2007 at 8:43 pm
Correction to Ubuntu Geek’s “How To Check Your External IP Address From The Command Line”…
I follow the Ubuntu Geek blog, and have found some very useful tips there. However, there’s a problem with their latest tip, “Howto Check you (sic) external IP Address from the command line.”
Some background: There’s a very usef…
September 25th, 2008 at 5:01 pm
try
lynx -dump http://whatismyip.com | awk ‘/Your/{print $5}’
that seems to work on my system.
October 10th, 2008 at 6:05 pm
Try either of these in a script or terminal:
wget -qO - http://cfaj.freeshell.org/ipaddr.cgior
lynx -dump http://whatismyip.org/Of course these will only work if you have wget or lynx installed on your system. Be aware that as written, the wget command returns a string without a newline character, so deal with that quirk accordingly. Can anybody correct that to return a newline?