gistfile1.txt

#!/bin/bash

source .env

set -eo pipefail

cd "$(dirname "$0")"

if [[ ! $UID -eq 0 ]]; then
    echo "you must run this as root:"
    echo "sudo $0"
    exit 1
fi

if [ ! -e /sys/class/net/wlan0/address ]; then
    echo "Are you sure you're running this on the pi?"
    exit 1
fi

export DEVICE_NAME=`cat /sys/class/net/wlan0/address | sed 's/://g'`

# Remove last line of hostfile
sudo sed -i '$ d' /etc/hosts
echo "127.0.0.1      ${DEVICE_NAME}" | sudo tee -a /etc/hosts
echo "${DEVICE_NAME}" | sudo tee /etc/hostname
sudo /etc/init.d/hostname.sh