How can I check that a perl version is not greater than some value?

Question

To ensure a script has at least version X of perl, you can do the following ``` require 5.6.8; ``` What is the best way of checking that a version is not too recent? (i.e. version 5.8.x if fine, but 5.9 or 5.10 are not ok).

Accepted Answer

This code will die if the version of Perl is greater than 5.8.9:

```
die "woah, that is a little too new" unless $] <= 5.008009;
```

You can read more about `$]` in `perldoc perlvar`.

How can I check that a perl version is not greater than some value?

Solution

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