count
--
	wc -l file.csv
	cat -n file.csv | tail -n1 | cut -f1
filter:
--
	grep
	>
	cat test.csv | grep '

	while read line; do
          echo $line
        done

#!/bin/sh
while read line; do
 if echo "$line" | grep -q "TypeB"; then
#    echo "It's there!"
 else
    echo $line
 fi
done

add:
--
#!/bin/sh

while read line; do
 if echo "$line" | grep -q "TypeB"; then
    echo "$line,Medium"
 else
    echo "$line,Large"
 fi
done

substract:
--
pluto@Oregon % cat data2 | grep @ | cut -d\@ -f2 | cut -d\  -f1