Env File Toolkit

Manage .env files with validate, diff, template generation, merge, and missing-key checks. Use when working with environment variable files, comparing .env.local vs .env.production, generating .env.example templates, validating .env syntax, merging env files, or checking for missing environment variables.

Swiss-army knife for .env file management. Validate syntax, diff environments, generate templates, merge files, and check for missing keys.

Commands

Validate

Check .env syntax, find duplicates, empty values, and formatting issues:

bash

python3 scripts/env_toolkit.py validate .env

Diff

Compare two .env files — shows keys only in one file and changed values:

bash

python3 scripts/env_toolkit.py diff .env.local .env.production

Template

Generate a .env.example with smart placeholders (strips secrets, infers types):

bash

python3 scripts/env_toolkit.py template .env
python3 scripts/env_toolkit.py template .env -o .env.example
python3 scripts/env_toolkit.py template .env --keep-values  # keep actual values

Merge

Merge multiple .env files (later files override earlier):

bash

python3 scripts/env_toolkit.py merge .env.defaults .env.local -o .env.merged

List Keys

List all variable names in a .env file:

bash

python3 scripts/env_toolkit.py list-keys .env
python3 scripts/env_toolkit.py list-keys .env --with-values

Check Missing

Verify a target .env has all keys from a template:

bash

python3 scripts/env_toolkit.py check-missing .env.example .env
python3 scripts/env_toolkit.py check-missing .env.example .env --strict

Dependencies

• Python 3.8+ (stdlib only, no pip packages needed)