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dd prints out status when sent SIGUSR1, but yeah that would be cool if other utilities did that as well off SIGINFO.



And does ^T map to SIGUSR1? That's the other thing which makes it so useful in BSD.


You wouldn’t want it to, because the default behavior for SIGUSR1 is to terminate.


Exactly. Whereas on BSD hitting ^T is (a) very likely to print useful information, and (b) if it doesn't do that, won't do anything at all.




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