#!/usr/local/bin/ksh

for d in "$@"
do

  g=1

  ls -1 $d/* > temp_${d}_1_$$ 2> /dev/null

  while [[ -s temp_${d}_1_$$ ]]

  do

    if (( $g < 10 ))
    then
      g=0$g
    fi

    if (( $g < 100 ))
    then
      g=0$g
    fi

    print "g: $g"

    head -20 < temp_${d}_1_$$ > temp_${d}_2_$$
    tail +21 < temp_${d}_1_$$ > temp_${d}_3_$$

    wc -l temp_${d}_1_$$
    wc -l temp_${d}_2_$$
    wc -l temp_${d}_3_$$

    cat temp_${d}_2_$$ temp_${d}_3_$$ > temp_${d}_4_$$
    diff temp_${d}_1_$$ temp_${d}_4_$$

    cat temp_${d}_2_$$ | thumbs.pl > thumbs/thumbs_${d}_${g}.html

    mv temp_${d}_3_$$ temp_${d}_1_$$
    rm -f temp_${d}_[234]_$$

    (( g++ ))

  done

  rm -f temp_${d}_1_$$

done