stats.sh

#!/bin/bash

# Tells you how your photos are distributed over the year - in which months do you take the most photos?
# 
# call with 
# ./stats.sh 2>/dev/null
# because there will be some broken exif data

date
echo "Total photos:"
find "/Users/Shared/iPhoto Library/Originals/" -iname '*.jpg' | while read f; do 
  timestamp=`exiv2 "$f" | grep timestamp`;
  read X X X month X X X X <<<${timestamp//:/ }
  echo $month
done | sort | uniq -c | sort -r > "result.txt"

total=0
month_numbers=(01 02 03 04 05 06 07 08 09 10 11 12)

while read line; do 
  line_without_blanks="$line";
  read count month <<<${line_without_blanks//:/ }

  for m in ${month_numbers[*]}; do
    if [ "$month" = "$m" ]; then
      echo "$month: $count" >> "stats.txt"
      total=$(($total+$count))
    fi
  done
done < "result.txt" 

cat stats.txt
echo $total
echo ------

while read line; do 
  line_without_blanks="$line";
  read month count <<<${line_without_blanks//:/ }

  percent=$(($count * 10000 / $total))
  length=${#percent}
  offset=$(( $length-2 ))

  if [ $offset = 0 ]; then
    echo Month $month: 0.${percent:$offset}%
  else
    echo Month $month: ${percent:0:$offset}.${percent:$offset}%
  fi
done < "stats.txt"

# rm stats.txt

date

# 
# Output:
# 
# Do 14 Feb 2013 23:39:44 CET
# Total photos:
# 08: 4072
# 09: 2815
# 05: 2330
# 04: 2024
# 07: 1901
# 03: 1853
# 06: 1791
# 12: 1360
# 10: 1295
# 11: 830
# 01: 776
# 02: 693
# 21740
# ------
# Month 08: 18.73%
# Month 09: 12.94%
# Month 05: 10.71%
# Month 04: 9.31%
# Month 07: 8.74%
# Month 03: 8.52%
# Month 06: 8.23%
# Month 12: 6.25%
# Month 10: 5.95%
# Month 11: 3.81%
# Month 01: 3.56%
# Month 02: 3.18%
# Do 14 Feb 2013 23:42:45 CET