How to print environment variables on Heroku?
step 1 : list your apps
heroku apps
Copy the name of your app
step 2 : view config variables of this app
heroku config -a acme-web
The heroku run
command runs a one-off process inside a Heroku dyno. The unix command that prints environment variables is printenv
(manual page). Thus
heroku run -a app-name printenv
is the command you are looking for.
Ok, I found the way:
heroku config
Append --json
to get the output as JSON.
heroku config -a acme-web --json