I think the other posts do a good job of considering backticks and methods to do what you want. But considering what you are actually doing with the code you provided, you could do that using DBI: 
@data_sources = DBI->data_sources($driver_name, \%attr);

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In reply to Re: Storing system results in an array by InfiniteSilence
in thread Storing system results in an array by MonkPaul

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