When posting this type of question, you'll generally get a better response if you take a shot and post the code that's not working for you. That said, you might want something like this:
map s/\@ulster\.ac\.uk//, @your_array;
or
map s/\@ulster\.ac\.uk//g, @your_array;
if there is a possibility that an array element will hold more than one email address.
Take some time and look up 'map' and s///. There is MTOWTDI, and there are more basic solutions to this problem.
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Are you posting in the right place? Check out Where do I post X? to know for sure.
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Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
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intervention).
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Want more info? How to link
or How to display code and escape characters
are good places to start.
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