if the parent process creates more than 1 sub-processes, how could I
let the parent process wait until all the sub-processes finish.

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Socrates.Lee@gmail.com wrote:
> if the parent process creates more than 1 sub-processes, how could I
> let the parent process wait until all the sub-processes finish.
>

Count them.
man wait3   (et.al.)

HTH
AvK

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