Directory.parent readonly property
The Directory.parent property returns a Directory representing the parent folder. If the folder is already a root folder, the property returns nil
Example
-- iterate through all current directory content
for entry in each(sys.Directory(".")) do
if type(entry) == "File" then
print(entry.name)
else -- entry is a directory
print(entry.fullpath:match("\\.*\\([%w%p]+)$").."\\")
end
end