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:- use_module(library(process)).(can be autoloaded)
infinite. If this option is a number, the waits for a maximum of Timeout seconds and unifies Status with
timeoutif the process does not terminate within Timeout. In this case PID is not invalidated. On Unix systems only timeout 0 and
infiniteare supported. A 0-value can be used to poll the status of the process.
|Status||is one of |