4TF16B7GA129E
4TF16B7GA129S
4TF16B7GA129D
4TF16B7GA129X

epoch=$(date -d "`date`" +"%s")
StringCsv="/home/Desktop/TokenGenScript/SerialNos.csv"
StringToken=b5242a2d7973c1aca3723c834ba0d239

while IFS=$'n' read -r line || [ -n "$line" ]
do
 j=$line
 serial=${j}:${epoch}:${StringToken}
 echo "$serial"|sha256sum > Token.csv
done < "$StringCsv"

echo "$serial"|sha256sum > Token.csv

echo "$serial"|sha256sum >> Token.csv