#!/bin/sh

for f in *.jpg; do
  maxsize=0
  bestfile="none"
  IFS="	" # tab character!
  for c in $f*; do
    csize=`wc -c < "$c"`
    if [ $csize -gt $maxsize ]; then
	maxsize=$csize
	bestfile=$c
    fi
  done
  echo "Biggest $f is $bestfile ($maxsize)"
  mv -i "$bestfile" BIGGEST
done