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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.

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

$4$

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

$\mathrm{false}$

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