.env- (dotenv files and the “.env-” prefix)

.env files (commonly named ".env") are plaintext files used to store environment variables for applications during development and deployment. They let developers keep configuration and secrets—such as database URLs, API keys, and feature flags—out of source code. The term ".env-" as a prefix or pattern is less standardized but appears in several practical contexts: versioned or environment-specific dotenv files, backup or temporary files created by editors and tools, naming conventions for environment variants, and as parts of deployment workflows. Below is an extended, structured exploration covering common uses, conventions, security considerations, tooling, examples, and best practices.

5. The "Local vs. Production" Duality

One of the most satisfying aspects of the .env file is how it handles different environments.

  • Treat .env.example as documentation, not a source of secrets.
  • For team-wide enforcement, use GitHub Actions or GitLab CI:

    .env- May 2026

    .env- (dotenv files and the “.env-” prefix)

    .env files (commonly named ".env") are plaintext files used to store environment variables for applications during development and deployment. They let developers keep configuration and secrets—such as database URLs, API keys, and feature flags—out of source code. The term ".env-" as a prefix or pattern is less standardized but appears in several practical contexts: versioned or environment-specific dotenv files, backup or temporary files created by editors and tools, naming conventions for environment variants, and as parts of deployment workflows. Below is an extended, structured exploration covering common uses, conventions, security considerations, tooling, examples, and best practices.

    5. The "Local vs. Production" Duality

    One of the most satisfying aspects of the .env file is how it handles different environments. For team-wide enforcement, use GitHub Actions or GitLab

  • Treat .env.example as documentation, not a source of secrets.
  • For team-wide enforcement, use GitHub Actions or GitLab CI: For team-wide enforcement