Question: Executing commands inside strings about racket-rash HOT 4 CLOSED

On Wed, Sep 26, 2018 at 06:14:14AM -0700, Paulo Matos wrote: When you run `docker-machine` to create a machine you need to change your environment so that you can control the machine using docker. `docker-machine` provides the information you need to change the environment.

So, after you create a machine you usually run `eval $(docker-machine env my-machine)`. I want to do this in rash, but `eval` doesn't exist and `$(...)` gets me into racket and rash complains `docker-machine` in this case is an undefined identifier. Now, I can do this: ``` (define machine-name "my-machine") (define lines (string-split #{docker-machine env $machine-name} #\newline)) (for ([l (in-list lines)]) ...) ``` For reference, the output of `docker-machine env ...` looks like: ``` export DOCKER_TLS_VERIFY="1" export DOCKER_HOST="tcp://18.185.184.7:2376" export DOCKER_CERT_PATH="/home/pmatos/.docker/machine/machines/test-machine" export DOCKER_MACHINE_NAME="test-machine" # Run this command to configure your shell: # eval $(/usr/bin/docker-machine env test-machine) ``` So in the loop above `l` will take the value of each of these lines. I would like to run them but I can't figure out how to do that. Any help on how to achieve this would be great.