摘要: grep的用法首先创建我们练习grep命令时需要用到的demo文件demo_file。 $ cat demo_file THIS LINE IS THE 1ST UPPER CASE LINE IN THIS FILE. this line is the 1st lower case line in 阅读全文
posted @ 2016-05-06 12:16 方诚 阅读(384) 评论(0) 推荐(0) 编辑