Delete everything in a folder that doesn't have a tag in Mavericks

Question

How can I delete everything in a folder that doesn't have a tag? Manually sifting through it is fairly unreasonable.

Answer 1

mdfind 'kMDItemUserTags!=*' -onlyin . -0|xargs -0 rm

Or using tag:

find . -type f|while read f;do [[ $(tag -m \* "$f") ]]||rm "$f";done