Remove files that are not what they appear to be

cleanup.sh

#!/bin/sh
# Some image files were fetched from an URL and not validated.
# Hence we have files that have '.jpg' extensions but are actually HTML files.
# Clean these out
# Remove the `-i` from the `rm` if you don't want to manually confirm deletion

for f in `find ./ -type f -iname "*.jpg"`;
do
    file "$f" | grep -q HTML
    if [ $? -eq 0 ] ; then
	echo "Deleting $f"
        rm -i "$f"
     fi
done