Check out the File::Spec module. Specifically the splitpath method:
splitpath
Splits a path in to volume, directory, and filename
portions. On systems with no concept of volume, returns
'' for volume.
($volume,$directories,$file) = File::Spec->splitpath( $pa
+th );
($volume,$directories,$file) = File::Spec->splitpath( $pa
+th, $no_file );
For systems with no syntax differentiating filenames
from directories, assumes that the last file is a path
unless $no_file is true or a trailing separator or /. or
/.. is present. On Unix this means that $no_file true
makes this return ( '', $path, '' ).
The directory portion may or may not be returned with a
trailing '/'.
The results can be passed to the catpath() entry
elsewhere in this documentto get back a path equivalent
to (usually identical to) the original path.
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