Shell Scripting Best Practices Comprehensive guide to writing robust, maintainable, and secure shell scripts following modern best practices. Script Foundation Shebang Selection Choose the appropriate shebang for your needs: Strict Mode Always enable strict error handling: For debugging, add: Script Header Template Variable Handling Always Quote Variables Prevents word splitting and glob expansion: Use Meaningful Names Default Values Readonly and Local Error Handling Exit Codes Use meaningful exit codes: Trap for Cleanup Error Messages Validate Inputs Functions Function Definition Return Valu…