Hi,
I have an ascii file with recurring lines (the file is 36mb so lots of lines) which look like this:
-2.5 -66.324-68.138 935.2 1.953 -0.664 272.617 73.684 -2.428 269.998 0.000
Every 14 lines there is a blank line.
I would like to, for each non-blank line, introduce a space at the 15th character space in the line (i.e. in the above between the '4' and the '-' so I separate the two numbers to give -66.324 -68.138 rather than -66.324-68.138). I want this applying to the first 13 lines, but not the 14th, the next 13 lines but not the 25th, and so on.
Is a short shell script best to sort this? Any help is much appreciated.
Thanks Andy