相关疑难解决方法(0)

下面两个命令：

grep ', \\.' enrolments


grep ', \.' enrolments

得到了如下所示的相同结果

COMP4001|4368523|Doddau Yobhazravi, .             |8684  |M

COMP9315|4368523|Doddau Yobhazravi, .             |8684  |M

COMP9321|4368523|Doddau Yobhazravi, .             |8684  |M

COMP9331|4368523|Doddau Yobhazravi, .             |8684  |M

COMP3121|4896558|Vozaila, .                       |3978/3|F

COMP9321|4896558|Vozaila, .                       |3978/3|F

COMP9031|4389601|Yiehil, .                        |8680/2|M

COMP9318|4389601|Yiehil, .                        |8680/2|M

reg for . 中的双反斜杠和单斜杠有什么区别？