mssparkutils.fs.cp: Copies a file or directory, possibly across FileSystems
mssparkutils.fs.mv: Moves a file or directory, possibly across FileSystems
mssparkutils.fs.ls: Array -> Lists the contents of a directory
mssparkutils.fs.mkdirs: Creates the given directory if it does not exist, also creating any necessary parent directories
mssparkutils.fs.put: Writes the given String out to a file, encoded in UTF-8
mssparkutils.fs.head: Returns up to the first 'maxBytes' bytes of the given file as a String encoded in UTF-8
mssparkutils.fs.append: Append the content to a file
mssparkutils.fs.rm: Removes a file or directory