You should call this after C<$h-E<gt>launch> to wait for the launch
to complete.
+=item $chars = $h->wc_c ($path);
+
+This command counts the characters in a file, using the
+C<wc -c> external command.
+
+=item $lines = $h->wc_l ($path);
+
+This command counts the lines in a file, using the
+C<wc -l> external command.
+
+=item $words = $h->wc_w ($path);
+
+This command counts the words in a file, using the
+C<wc -w> external command.
+
=item $h->write_file ($path, $content, $size);
This call creates a file called C<path>. The contents of the