ID spousteneho programu v Perlu?

[Matej Cepl <matej zavinac ceplovi bod cz>]

Dobrý den,

hloupý dotaz, jak zjistím ID programu spouštěného v Perlu pomocí
system? Tj. ekvivalent BASHího:

        RUN=$!

Děkuji,

Matěj

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