You may have difficulty getting help with csh scripts, because it is not very good for scripting. See these articles for reasons why that is so:

Top Ten Reasons not to use the C shell
C shell problems
Csh Programming Considered Harmful

In a Bourne-type shell, you might do this:

Code:

for port in port-1 port-2 port-3 port-4
do
  printf "<sourcePort>daughtercard:%s</sourcePort>\n" "$port"
done