He's not asking how to require a version of Perl (as use v5.6.0 would do),
he's asking how to determine which version of Perl is required (so he could add a use v5.6.0 directive, for example).

In reply to Re^6: How to tell what version of Perl a script needs? by ikegami
in thread How to tell what version of Perl a script needs? by Whitehawke

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