UNIX for Beginners Questions & Answers

awk -F'"' '         {nf += gsub(/,/, ",") + 1          for(i = 2; i <= NF; i += 2)          nf -= gsub(/,/, ",", $i)         } END     {printf("result:%d\n", nf)         } ' file result:12

if [ 'expr $nf  % 19 ' -gt 0]
then 
  'echo "file is invalid"
please suggest.!

awk -F'"' '
	{nf += gsub(/,/, ",") + 1
	 for(i = 2; i <= NF; i += 2)
	 nf -= gsub(/,/, ",", $i)
	}
END	{printf("result:%d\n", nf)
	 if(nf % 19)
		print FILENAME, "is invalid"
	}' file

  'echo "file is invalid"

if [ 'expr $nf  % 19 ' -gt 0]

RES=$(awk '...' ...)