#!/bin/bash -e
# Script to generate /etc/dhcpcd.conf for static IP on Raspbian Raspberry Pi
# https://gist.github.com/RichardBronosky/1526ec6a585dab8f1fc9990234ac4ed0


if [[ $# -ne 0 ]]; then
    cat<<EOF
Usage:
      $0
      DEV=eth0 $0
EOF
    exit 1
fi

dev=${DEV:-wlan0}

ip -4 addr show dev $dev | awk -v dev=$dev '/inet/ {ip=$2} END{print "interface "dev; print "static ip_address="ip}'
ip route | grep default | awk '{print "static routers="$3}'
awk '/nameserver/{dns=dns" "$2} END {sub(/^ */,"",dns); print "static domain_name_servers="dns}' < /etc/resolv.conf

# vim: et sw=4 ts=4 sts=4 syntax=sh