Question about Linux signal handling

[Tom Sanders]

If I catch a signal (SIGUSR2) using "sigaction" call
then is the signal handler replaced with default
handling, if I don't install the signal handler again?

I remember that in UNIX "signal" system call default
signal bahavior was to replace the signal handler with
default after everytime signal was received?

My observation is that even if I get same signal
twice, I get the same print (which I have in my signal
handler) again, illustrating that signal handler was
not replaced with default !!! Is that the correct
behavior of "sigaction"?

Thanks,
Tom

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