Tired of running `eval "$(docker-machine env host)"` every time? Just paste this in .bashrc / .zshrc. This script automatically sets environment variables for one of running host machines in Docker Machine.

docker-machine.sh

# check if `docker-machine` command exists
if command -v docker-machine > /dev/null; then
  # fetch the first running machine name
  local machine=$(docker-machine ls | grep "Running" | head -n 1 | awk '{ print $1 }')
  if [ "$machine" != "" ]; then
    eval "$(docker-machine env $machine)"
  fi
fi