* Add a page about file/directory-handling :
+ - deleting a directory tree.
- appending selected portion from a file to another file.
- overwriting lines in files.
- - deleting a directory tree.
- show all with IO::All and without it.
+ print $ex_gen->html_with_title(
+ title => "Deleting a directory tree",
+ id_base => "delete_directory_tree",
+use File::Path qw(rmtree);
+rmtree(["./path-to-subdir"], 1, 1);