awk 'BEGIN{sum=0}{
     k=0;
     for(i=1;i<=length($0);i++){
         c=substr($0,i,1);
         if(c<6 && c>0){
             k++;
             sum++;
         }
     }
     print "line"NR" number:"k 
     }END{print "sum is " sum}' $1