Rotate photo based on metadata

There are times when it makes sense to rotate the photo, based on the extra information stored in the photo. The EXIF data contains this.

To download the tool on a deb distro:

sudo apt install exiftran

Once installed, you can rotate one photo with:
exiftran -ai

Or to all files in a directory:
for file in * ; do echo "$file" ; xiftran -ai "$file" ; done