# Alter FINDHERE to where you want this thing to search
FINDHERE="/home/pi/public_html/"

# Identify will give multiple lines for animated gif.
function is_animated_gif() {
    FRAMES=$(identify $1 | wc -l)
    [ $FRAMES -eq 1 ] && return 1
    [ $FRAMES -ge 1 ] && return 0
}

#Clean up
rm animated_gif_report.txt non_animated_report.txt

### Save the field separators. The files I generate are newline sep'd
old_IFS=$IFS
IFS="
"

#Find all gifs
find $FINDHERE -iname '*.gif' -print0 | xargs -0 file > /tmp/foo

#Make a report
for i in `awk -F: '{print $1}' /tmp/foo` ; do
    if is_animated_gif $i ; then
        echo $i >> animated_gif_report.txt
    else
        echo $i >> non_animated_report.txt
    fi
done

for GIFFILE in `cat non_animated_report.txt` ; do
    PNGFILE=`echo $GIFFILE | sed 's/\.gif/.png/i'`
    echo convert $GIFFILE $PNGFILE # for debugging
    # convert $GIFFILE $PNGFILE # Uncomment if you're certain.
done

#fix the field separator
IFS=$old_IFS