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I have an http server (launched using http.Handle) and I would like to do some operations.
How can I do that (on linux) ? Is it possible to do those operations in case of a ctrl-C ?
I’m not familiar with unix signals so the answer may be trivial.
You can subscribe to the TERM and INT signals using the signal package. But note that these signals are only sent when the process is killed explicitly; normal exit (initiated by the process itself) does not involve any sort of signals. I think for normal exit just do something in the main routine (which supposedly should spawn worker goroutines and then wait on them).
Read
man 7 signalfor more general info on POSIX signals.