[root@iZuf6fuoapic5utz51jgt5Z ~]# grep chapter[0-9]* file
this is chapter.
this is chapter123
this is oschapter1
初学者,请问为什么会有第一条?
[root@iZuf6fuoapic5utz51jgt5Z ~]# grep chapter[0-9]* file
this is chapter.
this is chapter123
this is oschapter1
初学者,请问为什么会有第一条?