File.rmdir

You're seeing just the function rmdir, go back to File module for more information.

rmdir(path)

rmdir(Path.t()) :: :ok | {:error, posix()}

Tries to delete the dir at path.

Returns :ok if successful, or {:error, reason} if an error occurs. It returns {:error, :eexist} if the directory is not empty.

File.rmdir("tmp_dir")
#=> :ok

File.rmdir("non_empty_dir")
#=> {:error, :eexist}

File.rmdir("file.txt")
#=> {:error, :enotdir}