Reset image orientation and other EXIF tricks

Different image viewers/editors use different EXIF tags to set image rotation, so the best way is to avoid use any of them. IMHO physical rotation (preferably lossless) is the best solution. So, how to get rid of any rotation for all x-thousand holiday photos?

I have found two suspicious exif tags: Orientation and Rotation. Wipe them off from my pictures

exiftool  -Orientation=  -Rotation= -overwrite_original_in_place .

(the final dot stands for the current directory)
Or:

for i in *JPG ; do
   exiftool  -Orientation=  -Rotation= -overwrite_original_in_place "$i"
done

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To delete the relatively large preview image (created by the Lumix camera for its own display) try:
exiftool -P -overwrite_original -PreviewImage=  -trailer:all= *jpg

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Copy all tags from other files (original files)

for i in * ; do 

    exiftool -tagsfromfile src/$i -iptc:all -codedcharacterset=utf8 \

             -overwrite_original $i ; 

done