To create space on my external USB hard drive for new backups, I need to delete all the August entries. This is done as follows -
ls -l /media [#to check that it is root:boztu] sudo /home/boztu/cron/permissions.sh
[#to make it root:boztu if not already so]
cd /media/8eef3b99-c17b-4913-ae61-d34c7fd5d459_ rm -rf ????08??
This will erase all the August entries, thereby creating more space.