cmail_top_users

if [ -z $1 ]; then
	printf "Usage: %s <dbfile>\n" "$0"
	exit 0
fi

sqlite3 -csv "$1" "SELECT mail_user, COUNT(*), SUM(LENGTH(mail_data)) AS data FROM mailbox GROUP BY mail_user ORDER BY data DESC;" | while IFS=, read user mails data; do printf "User %s has %s mails totaling %s bytes\n" "$user" "$mails" "$data"; 
done