Change settings for thumbnails

change settings for thumbnails in linux

so that maximum size and age are reduced

1. use the dconf-editor
2. go to : org > cinnamon > desktop > thumbnail-cache
3. Click once on maximum-age and then once on 180, and change it to 90 (90 days as maximum age).
   click once on maximum-size and then once on 512, and change it to 128 (128 MB as maximum size).
   Repeat this in each user account.