Split images into subfolders on Oxford IIIT Pet dataset

categorize.sh

# /bin/sh
# this script categorize image files by moving them into subfolders
# using the name of animals.

for f in *.jpg; do
    name=`echo "$f"|sed 's/ -.*//'`
    dir=`echo "${name%_*}"|tr '_' ' '| tr '[A-Z]' '[a-z]'`
    mkdir -p "$dir"
    mv "$f" "$dir"
done