摘要：
grep的用法http://www.thegeekstuff.com/2009/03/15-practical-unix-grep-command-examples/首先创建我们练习grep命令时需要用到的demo文件demo_file。$ cat demo_fileTHIS LINE IS THE 1ST UPPER CASE LINE IN THIS FILE.this line is the 1st lower case line in this file.This Line Has All Its First Character Of The Word With Upper Case. 阅读全文
