The IsDirectory(file) command returns true if file refers to a directory.  If it is not a directory, false is returned.

If the file does not exist or an invalid file descriptor is passed, an exception is raised.

$\mathrm{FileTools}\left[\mathrm{Text}\right]\left[\mathrm{WriteFile}\right]\left(''file''\,''data''\right)$

$4$

$\mathrm{FileTools}\left[\mathrm{IsDirectory}\right]\left(''file''\right)$

$\mathrm{false}$

$\mathrm{FileTools}\left[\mathrm{Remove}\right]\left(''file''\right)$