摘要：
grepgrep 工具的工作方式是对文件的每一行搜索给定字符串的首次出现。如果找到了这个字符串，就打印该行的内容；否则就不对该行进行打印。下面这个文件我称之为 “memo”，阐述了 grep 的用法和结果。To: All EmployeesFrom: Human ResourcesIn order to better serve the needs of our mass market customers, ABC Publishing is integrating the groups selling to this channel for ABC General Reference and 阅读全文
