I can confirm that...

my ($UUID) = `ioreg -d2 -c IOPlatformExpertDevice`
    =~ /^.*\bIOPlatformUUID\b.*"([^"]+)"\s*$/m
        or die "failed to parse ioreg";

[download]

...works on my Macbook.

In reply to Re^2: Read UUID on macOS from script by stevieb
in thread Read UUID on macOS from script by Anonymous Monk

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