Write programs in Linux

Source: Internet
Author: User
Write programs in Linux-general Linux technology-Linux technology and application information. For more information, see the following section. I looked at the tutorial (http://www.lupaworld.com/action_viewstutorial_itemid_4591.html) in Linux Write a serial port to receive data program succeeded, but I want to know how to use this program to send data? I know that I use write to send data, but what I want is to send data according to my requirements after it is run. That is to say, I have a shortcut key, and I press the shortcut key, then, input the content and send it out.
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