Common jq Pitfalls in Shell Scripts and How to Handle Them

Developers and sysadmins using jq to process JSON in shell scripts often encounter edge cases that work in testing but fail in production. Key issues include improper null handling and unexpected behavior when querying missing or empty fields. Using flags like -r for raw string output and -e to detect null results with exit code 5 can help catch these problems early. Defensive scripting patterns, such as explicit null checks and error exits, are recommended to avoid hard-to-debug production failures. These are not flaws in jq itself but rather subtleties that arise when combining shell scripting with real-world JSON data processing.