ifconfig | grep netmask | grep -v 127.0.0.1 | awk '{printf "IP: %s\n", $2 }'

# Find the IP address the world sees me as.
# This will use setproxy that was downloaded from the internet to fill in environment
# varialbes so that curl will work when a proxy is being used.
# http://www.bl0rg.net/software/frucht/

if [ -x /usr/local/bin/setproxy ] ; then
  eval `/usr/local/bin/setproxy`
fi

curl -s http://checkip.dyndns.org/ | sed 's/[a-zA-Z<>/ :]//g' | \
awk ' {   sExt = "External IP"; 
  sExtIP = $0; 
  iExt = length(sExtIP); 
  if (iExt > 0) {     printf("Ex: %-21s\n", sExtIP); 
  } } '