find . -type f -name ".JPG" -exec sh -c 'for file; do convert "$file" -resize 66.67% "resized_${file##/}"; done' sh {}
Eine private Webseite
find . -type f -name ".JPG" -exec sh -c 'for file; do convert "$file" -resize 66.67% "resized_${file##/}"; done' sh {}