[cs631apue] Question about background

zding4 zding4 at stevens.edu
Wed Dec 17 19:16:40 EST 2014

Hi everyone,

A question about background processing.
like $ cmd &
In normal shell it will display it's pid
$ [1] 12345
and when it's done
it will also display corresponding information.
Is this information output to shell's stdout or it output to stderr?


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