Regex find and replace - delete line

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Hi all

This feels like a really dumb question but doing a regex find and
replace is it possible to delete a line? For example,

for (@file) {
s/foo//g;
}

which equates to:

for each element in array 'file' if you find 'foo' then replace it with
null.

I then write the array to a file (using Tie::File) and it leaves a blank
line where the element containing 'foo' was like:

null
foo1
foo2
foo3

Perhaps I am confabulating two ideas here? Is there a way to walk
through an array and find a particular array element and delete it
rather than replace it with null (and then write it out to a file using
Tie::File)?

Thanks

James Turnbull

- --
James Turnbull <james@xxxxxxxxxxxxxxxxx>
- ---
Author of Pro Nagios 2.0
(http://www.amazon.com/gp/product/1590596099/)

Hardening Linux
(http://www.amazon.com/gp/product/1590594444/)
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