Environment Variable Naming Checker

Check a name against portable POSIX environment variable conventions - UPPER_SNAKE_CASE, no hyphens, no leading digit - with a corrected suggestion.

Variable name

Doesn't follow portable naming conventions

Contains lowercase letters - convention is UPPER_SNAKE_CASE.
Contains a hyphen - shells treat hyphens specially in some contexts, use underscore instead.
Contains characters outside A-Z, 0-9, and underscore - not portable across shells.

Suggestion: DATABASE_URL

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