I would like a regex to replace leading zeroes in a number. For example, a ten-digit number string has 5 leading (leftmost) zeroes. I would like to replace each leading zero with a space, i.e. 5 leading zeroes with 5 leading spaces. I tried s/^0+/ /g but it replaced all leading zeroes with only one space character. How may I accomplish this?

Originally posted as a Categorized Question.