Sometimes out of dire circumstances one may download a huge set of rars. Unraring all the scene release files in split rar format in each separate directory with their separate subtitles (idx/sub files) is a cumbersome task.

1. Install unrar from http://gnuwin32.sourceforge.net/packages/unrar.htm
2. cd into the base season directory using cygwin.
3. Unrar recursively:

   1	find /path/to/dir-of-rars -iname "*.rar" -exec sh -c 'dir=`dirname {}` && echo "$dir" && unrar -o- e "{}" $dir' \;

4. You may need to run this multiple times to catch the rars that the rars may create.