in reply to Efficient trimming of trailing whitespace from array elements?

perldoc has a few answers to this too, you should check them out. This should work for you though. 
s/(\s+)$//;

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Re: Re: RegEx needed
by Juerd (Abbot) on Dec 31, 2002 at 15:53 UTC

    s/(\s+)$//;

    You can leave out the parentheses. (Unless you need $1, but you don't, in this case) 

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