netbsd-help: Serical Port Programming On Linux

Subject: Serical Port Programming On Linux
To: None <netbsd-help@NetBSD.ORG>
From: Jin Xinliang <jxl@ns.guomai.sh.cn>
List: netbsd-help
Date: 02/18/1997 18:00:40

I find it is difficult to communicate through serial port on linux.
And I have no book to study. 
Can you help me?