From the docs:

"If you haven't called fileparse_set_fstype(), the syntax {that is, how the path is parsed} is chosen by examining the builtin variable $^O according to these rules."

$^O is the variable that contains the name of the operating system under which perl was built.

"these rules" can be found in the perldoc for File::Basename under fileparse_set_fstype.

In reply to Re: use File::Basename - need to specify OS? by saintbrie
in thread use File::Basename - need to specify OS? by kiat

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