awk related question

[blessedgirl]

hey sir,

i have a question regarding how to sum and get average of records of files using awk programming

i have several output files like this

file 1
year col1 col2 col3 col4
1 0.4 0.1 0.3 0.8
1 0.3 0.2 0.9 2
2 0.1 0.3 0.8 0.7
2 0.2 0.4 0.9 0.7
3 0.4 0.3 0.8 0.3
3 0.2 0.4 0.4 0.2
4 0.8 0.4 0.8 0.3
4 0.5 0.4 0.5 0.5

file 2
year col1 col2 col3 col4;
1 0.4 0.1 0.3 0.8
1 0.3 0.2 0.9 2
2 0.1 0.3 0.8 0.7
2 0.2 0.4 0.9 0.7
3 0.4 0.3 0.8 0.3
3 0.2 0.4 0.4 0.2
4 0.8 0.4 0.8 0.3
4 0.5 0.4 0.5 0.5

file 3
year col1 col2 col3 col4
1 0.4 0.1 0.3 0.8
1 0.3 0.2 0.9 2
2 0.1 0.3 0.8 0.7
2 0.2 0.4 0.9 0.7
3 0.4 0.3 0.8 0.3
3 0.2 0.4 0.4 0.2
4 0.8 0.4 0.8 0.3
4 0.5 0.4 0.5 0.5

and i want the average out puts of all the records of a files to be summed and averaged in to one file and looks like this

year col1 col2 col3 col4
1
1
2
2
3
3
4
4
5
5

[numberwhun]

I am moving this to the Unix forum as this is the Perl forum. Please choose the best appropriate forum next time.

Regards,

Jeff

[ashitpro]

#!/bin/bash
file1=$1
file2=$2
file3=$3

total_lines=`cat $file1 |wc -l`
num_lines=`expr $total_lines - 1`
for (( j=2; $j <= $num_lines; j++ ))
do
        l_file1=`head -n $j $file1 | tail -1`
        l_file2=`head -n $j $file2 | tail -1`
        l_file3=`head -n $j $file3 | tail -1`

        echo $l_file1 > /tmp/tmp.txt
        echo $l_file2 >> /tmp/tmp.txt
        echo $l_file3 >> /tmp/tmp.txt

        year_num=`echo $l_file1 | awk {'print $1'}`

        col1_sum=`awk '{s+=$2}END{print s}' /tmp/tmp.txt`
        col1_avg=`calc $col1_sum / 4`

        col2_sum=`awk '{s+=$3}END{print s}' /tmp/tmp.txt`
        col2_avg=`calc $col2_sum / 4`

        col3_sum=`awk '{s+=$4}END{print s}' /tmp/tmp.txt`
        col3_avg=`calc $col3_sum / 4`

        col4_sum=`awk '{s+=$5}END{print s}' /tmp/tmp.txt`
        col4_avg=`calc $col4_sum / 4`

        echo $year_num $col1_avg $col2_avg $col3_avg $col4_avg
done

This script accepts three cmd parameters i.e. three file names.
Its is tested for three files with four columns..
e.g.
./a.sh file1 file2 file2

You will need calc command to get this script run.
If it is not install, use following command to install..

[UBUNTU]
apt-get install apcalc

[RED HAT/FEDORA]
yum install apcalc