I recently needed a quick and dirty way to crop the bottom chunk of a large batch of scanned photos. Thanks to Linux and FOSS, this is possible with a fantastic tool known as imagemagick.

Simply install imagemagick to get the necessary tools

#Assuming you have a redhat based distro
sudo yum install ImageMagick*

Once installed use the mogrify tool (part of ImageMagick) to quickly chop the bottom part off:

mogrify -chop 0x45+0+0 -gravity South *.jpg

The above example chops the bottom 45 pixels off of every picture in the directory you’re in. Thanks to this site for the info. Handy.