How To Resize images with command line

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If you want to resize your photos it's simple to use resize tool in gThumb. Unfortunately gThumb deletes all the EXIF data like date and time the photo was taken.

To keep all EXIF data I use convert (from imagemagic)

find ./ -iname *.JPG" -maxdepth 0 -exec convert {} -resize 50% ./resized/{} \;

How To Adjust Date and/or Time setting in EXIF date from JPG pictures

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Sometimes it happend: The clock from your digital camera isn't on the right time. So all your pictures have the wrong date or time in EXIF data. This can be a very big problem if you use more than one camera and want to sort the pictures of a event on the date and time that the picture was taken.