Output separators

The output field separator and record separator are held in the built-in variables OFS and ORS. Initially, OFS is set to a single blank and ORS to a single newline, but these values can be changed at any time. For example, the following program prints the first and second fields of each record with a colon between the fields and two newlines after the second field:

   BEGIN  { OFS = ":"; ORS = "\n\n" }
          { print $1, $2 }

   	{ print $1 $2 }