CODEWITHSUNDEEP
c++linuxsignals
Xaltar
Xaltar

Reputation: 1716

Catch shutdown console in Linux

I'd like to catch a Shutdown done by a user in a Linux terminal, such as:

sudo shutdown

I'm using the following C++ code:

myAct.sa_handler = myStructure::mySignalHandler;
sigaction(mySignal, &act, NULL);

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

However, using a script implies to modify the system's main files, and I don't want that.

Is there another solution to catch a shutdown signal via a C++ code in Linux ?

Upvotes: 0

Views: 299

Answers (1)

doron
doron

Reputation: 28902

As per the man page, when shutdown is run, all processes are sent a SIGTERM. So if you write your own signal handler for SIGTERM, you should not need to include any other scripts.

Upvotes: 3

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