Code: awk ' { a[NR]=$1 } END { for(i=1;i<=NR;i++) printf "%1.11f\n", a[i] } ' 1.csv > test
awk ' { a[NR]=$1 } END { for(i=1;i<=NR;i++) printf "%1.11f\n", a[i] } ' 1.csv > test
awk '{ printf "%1.11f\n", $1 }' 1.csv > test