XML editing inside a Perl script

Question

I am trying to us the perl -pi -e to edit the a line in a xml file. If I run the perl -pi -e command from the command line it works fine, but once I put in my script and use the

Answer 1

You need to add quote marks around the argument you pass to -c.

At the moment you have -c perl and then -pi is taken as another argument to su not perl.