docker-search-for-port

#!/bin/bash

########################################################################
# Target : OSX
# Description : 
# Port forwarding and networking can sometimes be a tricky to set up
# particularly when using vmware fusion.
# This script takes a port as a single argument then attempts to 
# connect on each of the local ipv4 interfaces in turn.
# Use 'nc' to check for open port is as it has less overhead than curl.
#########################################################################

PORT_TO_TEST=${1:?please provide a port number as argument to this script}

INTERFACES_ADDRS=$(ifconfig | \
    sed -n '/inet/{
        /inet6/!{
           s_inet[ ]*\([0-9\.]*\).*_\1_;
           s_[^0-9\.]*__g;p;
        };
    }')

for IP in ${INTERFACES_ADDRS};
    do nc -v -z -w2 $IP $PORT_TO_TEST
done