Append a New Column in a CSV File in Linux

Hi,

I would like to append a new column in a csv file in linux via the parameters being passed

For Eg Input File

UID,Column_Nodes.csv

CLASS,Column_Nodes.csv

SUBCLASS,Column_Nodes.csv

BUS_NAME,Column_Nodes.csv

My Output file Should be like when i run the script ./Datafile.sh i need to pass the parameter with the application name like ./Datafile.sh CRE_FF and my output file should like this

CRE_FF_Column_Nodes_UID,UID,Column_Nodes.csv

CRE_FF_Column_Nodes_UID,CLASS,Column_Nodes.csv

CRE_FF_Column_Nodes_UID,SUBCLASS,Column_Nodes.csv

CRE_FF_Column_Nodes_UID,BUS_NAME,Column_Nodes.csv

The Parameter passed needs to get appened with the 3rd column and 2nd column.