假设~/admin的文件夹下面有几个文件: a.pm b.pm c.pl d.pl e.pml 想只显示.pm结尾的可以用: ls *.pm 或者 ls | grep .pm,两者等价. 想显示b.开头的 ls b.*或者ls | grep b. 想显示带.的 ls *.* 或者 ls | grep .
HDU 2222 Keywords Search(查询关键字) Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/131072 K (Java/Others) [Description] [题目描述] In the modern time, Search engine came into the life of everybody like Google, Baidu, etc. Wiskey also wants to br