I need to build a script that adds comma separated values into a particular line in a file.
Say I have a file with contents:
DL1 : abc@kk.com,cde@kk.com,xyz@kk.com
DL2 : hjk@kk.com,nbv@kk.com,tuy@kk.com
now I have to remove xyz@kk.com
from DL1