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I have a coded a program in C for linux. At the moment I am using ubuntu upstart to run as a background service.
I want to be able to have the program gracefully shutdown when commanded instead of just being killed off. Can someone please point me to the functions used to receive such a command?
(edit: can’t answer own post but it seems I am meant to use signal.h signal function to put callbacks on SIGTERM and SIGKILL).
You want to use
sigaction(2)to define a handler to be run whenSIGTERMis caught.