| # which column | |
| if [ $# -ne 2 ]; then | |
| echo "tell me file name and col number" | |
| exit 1 | |
| fi | |
| k=$2 | |
| file=$1 | |
| # sort it | |
| sort --key $k -n $file > $file-sort | |
| # now we generate CDF | |
| totalLines=$(cat $file-sort | wc -l) | |
| echo "total line numbers: $totalLines" | |
| rm ./xx | |
| for i in `seq 1 100`; | |
| do | |
| lx=$(( $i * $totalLines )) | |
| lxx=$(( $lx / 100 )) # you get the line number here | |
| sed -n "${lxx}p" $file-sort >> ./xx | |
| done | |
| cat ./xx | awk '{print $1,"\t",NR}' > cdf-$file |