Generalize the script written in exercise 13 so the character separating the list items is given as an argument to the function. If this argument is absent, the separator should default to a colon.

What will be an ideal response?

This script segment takes an option in the form –dx to specify the
delimiter x:
$ cat nodel
if [[ $1 == -d? ]]
then
del=$(echo $1 | cut -b3)
shift
else
del=:
fi
IFS=$del
set $* for i
do
echo $i
done