filepics

#!/bin/sh

# check wheter the input is an valid directory
if ! [ -d $1 ]
then
    echo "error: "$1": is not a valid directory" 1>&2
    exit 1
fi

# go through each file in that directory
for fname in "$1"/*
do

    type=`file -b  "$fname" | cut -c 1-4`

    # if the file is JPEG type
    if [ "$type" = "JPEG" ]
    then
        date=`exiftime -tg "$fname" | cut -f 3 -d " "`
	# check wheter we can find Exif data by checking whether $date is empty
        # if we can find Exif data 
	if [ "$date" != "" ]
        then
	    year=`echo $date | cut -f 1 -d ":"`
	    month=`echo $date | cut -f 2 -d ":"`
	    mkdir -p $year/$month
	    mv "$fname" $year/$month
	 fi
    # if the file is another type or not exist
    else
         echo "error: "$fname": is not a valid JPEG file" 1>&2
    fi
done