$ perlver foooooo.pl


   -----------------------------------------
 | file       | explicit | syntax | external |
 | ----------------------------------------- |
 | foooooo.pl | ~        | v5.8.0 | n/a      |
 | ----------------------------------------- |
 | Minimum explicit version : ~                             |
 | Minimum syntax version   : v5.8.0                        |
 | Minimum version of perl  : v5.8.0                        |
   -----------------------------------------