How can I get my external IP address from behind a NAT?
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Thank you. I don't have that command and before I find it I'll ask this. I have a command that works but it outputs more then just the IP address. I tried a few things but all in all, I ended up in perl.
my $external_ip = `lynx -dump "http://checkip.dyndns.org"`;
my $external_ip =~ s/Current IP Address: //;
All I want is the IP address but it doesn't output anything. Maybe my regex skills arn't what they use to be.
I still don't understand why this regex won't work... Thanks. That's a nice command there. Although mine has a carriage-return before and after the ip address that I can't seem to get rid of. It looks like this;
I know it's a very old thread, but you never know
I've written this very simple script for the above request:
# Output public IP from behind NAT using checkip.dyndns.org
printf "Your Current IP address is: "
curl -s http://checkip.dyndns.org/ | cut -d ' ' -f 6 | sed s/"body\|html\|<\|>\|\/"//g
# Respect for opensource... Respect for sharing!!
# Script written by Sergani ... firstname.lastname@example.org
The output should be something like this:
Your Current IP address is: XYZ.XYZ.XYZ.XYZ
If you do not want the text at the beginning of your line, for scripting purposes for example, you may just remove the "printf" line
You may then place this script file (name it getip for example) in your /bin/ directory, change it's permission for all users (or the root only, as you like) to be able to execute it:
For all users:
chmod a+x /bin/getip
For root only:
chmod ug+x /bin/getip
I hope it helps, and I would ask that if you were to use the script, to not forget including my bottom lines.. very much appreciated guys!!
I went even further for a script I wrote and created the following simple function that queries a random ip site. All of the ones I use output a plain-text address, so there's no html to filter out. Some of them do unfortunately tack a newline onto the end, however, but it's easy enough to remove those as necessary.
You can of course add additional sites of your own, but be careful how you construct the command, as the loop uses wget's exit code to determine if it successfully retrieved the address. Do any text filtering outside the loop after it's finished.