#!/bin/sh

COLUMN="1"
FORMAT="TOTAL: %s\n"

if [ "$1" = "-h" ]; then
	cat<<EOF
Usage: ${0##*/} [COLUMN] [FORMAT]

Sum COLUMN (default to column $COLUMN) and output result with format FORMAT
(default to $FORMAT).

EOF
	exit
fi

[ $# -ge 1 ] && COLUMN="$1" && shift
[ $# -ge 1 ] && FORMAT="$1"

awk -v format="$FORMAT" '{total += $'$COLUMN'; print} END {printf format, total}'