linux vi相关操作
http://q1q2q3q4q5q6ln.blog.163.com/blog/static/50079433201281994758220/
http://skycyc23.blog.51cto.com/231267/351439
http://q1q2q3q4q5q6ln.blog.163.com/blog/static/50079433201281994758220/
http://skycyc23.blog.51cto.com/231267/351439