我正在寻找仅使用bash /标准Linux命令即可将字符串转换为以下内容的东西：

1. Single-quotes surrounding a string should be removed
2. Double-quotes surrounding a string should be removed
3. Unquoted strings should remain the same
4. Strings with unmatched surrounding quotes should remain the same
5. Single-quotes that don’t surround the string should remain
6. Double-quotes that don’t surround the string should remain

例如：

• ‘Food’ should become Food
• “Food” should become Food
• Food should remain the same
• ‘Food” should remain the same
• “Food’ should remain the same
• ‘Fo’od’ should become Fo’od
• “Fo’od” should become Fo’od
• Fo’od should remain the same
• ‘Fo”od’ should become Fo”od
• “Fo”od” should become Fo”od
• Fo”od should remain the same

Thank you!