[逻辑表达式](%E9%80%BB%E8%BE%91%E8%A1%A8%E8%BE%BE%E5%BC%8F.md) [文件表达式](%E6%96%87%E4%BB%B6%E8%A1%A8%E8%BE%BE%E5%BC%8F.md) [数值操作符](%E6%95%B0%E5%80%BC%E6%93%8D%E4%BD%9C%E7%AC%A6.md) [字符串比较](%E5%AD%97%E7%AC%A6%E4%B8%B2%E6%AF%94%E8%BE%83.md)