The listed examples didn't indicate to me that we need to worry about anything other than the first number, and adding 2000 to a 1 digit number definitely results in a 4 digit one. :-)

But if that's your spec, then try s/(\d?\d)-(\d?\d)-(\d?\d)/sprintf("20%02d-%02d-%02d", $1, $2, $3)/eg

In reply to Re^3: need regular expression by tilly
in thread need regular expression by jesuashok

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