bashshellcsplit

Split file after n number of non consecutivempty lines

I am trying to split a big text files after n number of empty lines. The text file contains exactly one empty line as data separator. Like below:

Lorem ipsum
Lorem ipsum
Lorem ipsum

Lorem ipsum
Lorem ipsum

Lorem ipsum

Lorem ipsum
Lorem ipsum

Lorem
Lorem

...

I have tried to use csplit

csplit data.txt /^$/ {3}

My expectation is that after 3 empty lines (not consecutive, but after cursor processes 3 empty lines) it split file and continue to do so. But it actualy splits file in each empty line.

My expected files: xx00

Lorem ipsum
Lorem ipsum
Lorem ipsum

Lorem ipsum
Lorem ipsum

Lorem ipsum

xx01

Lorem ipsum
Lorem ipsum

Lorem
Lorem

Any suggestion?

Solution

  • With awk (tested with GNU and BSD awk):

    awk -v max=3 '{print > sprintf("xx%02d", int(n/max))} /^$/ {n += 1}' file