How do i check the docker-machine shell environment settings?

petulia3478

$ docker-machine env training1                       
export DOCKER_TLS_VERIFY="1"
export DOCKER_HOST="tcp://192.168.99.100:2376"
export DOCKER_CERT_PATH="/home/trainer/.docker/machine/machines/training1"
export DOCKER_MACHINE_NAME="training1"
# Run this command to configure your shell: 
# eval $(docker-machine env training1)