HIPAA Compliant Log Anonymization Script for Medical Records

Develop a Bash script that automatically scrubs personally identifiable information (PII) from medical log files, ensuring HIPAA compliance. The script must use sed and awk to replace patient names, social security numbers, and contact details with anonymized tokens. Implement a secure logging mechanism that preserves the original file and creates a sanitized version with redacted sensitive information. Include error handling for various file formats and sizes, with robust logging of anonymization processes.