Unix myip

Always been missing a quick way (read: UNIX CLI util) of revealing the IP currently show to the global internet, which using NAT could be quite cucumbersome to find out.

The trick below will do the trick :-)

$ cat bin/myip 
#!/bin/sh
if [ -n "`whereis curl`" ]; then
    IP=`curl -s http://rickvanderzwet.nl/playground/ip.cgi`
else
    IP=`fetch -qo - http://rickvanderzwet.nl/playground/ip.cgi`
fi

if [ -n "$IP" ]; then
    HOST=`dig +short -x ${IP}`
fi
echo "$IP ($HOST)"

$ cat /var/www/playground/ip.cgi 
#!/usr/bin/perl  -w

print "Content-length: " . length($ENV{'REMOTE_ADDR'}) . "\n";
print "Content-type: text/html\n\n";
print $ENV{'REMOTE_ADDR'};