files=`ls ./*txt`
for i in $files
do
   awk -v OFS="\t" '{printf($1"\t"$2"\t"$3"\t"$4"\t"$5"\t"$6"\t"$7"\t"); printf("%.2f",$8); printf("\t"$9"\t"); printf("%.8f\n", $10)}' $i > $i.new
   mv $i.new $i
done
