Provide executable to inspect encrypted ENV vars

[harley]

Context

Have you done something like bin/rails credentials:show | grep AWS? It is a little cumbersome. It'd be nice to display all relevant ENV vars via a single command.

Idea

• Show all values

  $ creds_env
  AWS_ACCESS_KEY_ID=abc123
  DATABASE_URL=postgres://localhost:5432/example_development

• Extract a value:

  $ creds_env AWS_ACCESS_KEY_ID
  abc123