My Dream

 unix script for parsing the table:  1,2,3,4,5,6,7,8,0,0,0,0  0,1,2,3,4,5,6,7,8,0,0,0  0,0,1,2,3,4,5,6,7,8,0,0  0,0,0,1,2,3,4,5,6,7,8,0  0,0,0,0,1,2,3,4,5,6,7,8 display: start r2 c4 end   r5 c4 start r2 c6 end r5 c6 start r2 c8 end r5 c8 command: cat a.txt |awk -F "," 'NR>=2 && NR <=5'|awk -F "," '{print $4" "$6" "$8;}' result: 3 5 7 2 4 6 1 3 5 0 2 4