c++ - Catch shutdown console in Linux -

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I want to capture a user shutdown in the Linux terminal, such as: 

 < Code> sudo shutdown

I am using the following C ++ code: 

  myAct.sa_handler = myStructure :: mySignalHandler; Signigation (my signal, and act, null);

And I'm using a script to send a mySignal signal.

However, using a script means to modify the system's main files, and I do not want it.

Is there another way to capture shutdown signals in Linux through the C ++ code?

According to the man page, when the shutdown is run, all processes send a cigarette. So if you write your signal handler for SIGTERM, then you do not need to include any other script.


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