A wrapper over the MacOs hostname command to accept the '-i' or '--ip-address' flag.

hostname.sh

#!/bin/sh

# hostname.sh - a wrapper over the MacOs hostname command to accept the '-i' 
# or '--ip-address' flag.
#
# SYNOPSIS
#  hostname [-i|--ip-address] [*]
#
# OPTIONS
#   -i, --ip-address
#       Display the IP address(es) of the host.
#   * 
#       Delegate everything to '/bin/hostname'.

get_ip_adress () {
    # This is a naive implementation that assume there is 
    # only one active network device.
    ifconfig en0 | awk '/inet / {print $2; }'
    exit 0
}

delegate () {
    /bin/hostname "$@"
}

if [ $1 == '-i' ] || [ $1 == '--ip-address' ] 
then 
    get_ip_adress
else
    delegate "$@"
fi

I missed the hostname -i command too much and created this naive wrapper that can print my IP address.

To use it I have aliased it to hostname:

alias hostname="/Users/me/hostname.sh"