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once you collect all these values into a file.


You can use AWK
to compare the values on the reqd column
and if the new value of date != old value of date then
you can print the old value...

Steps to be done.
------------------

1). First get the list of all the values for ex

Priya , Prakash etc into a file.

using

cat file_name | cut -d ' ' -f4-4 | sort -u > temp_file.
...

I know that we can call system command to execute shell script in awk.

but it does not return the result of the command executed , but only returns
the value of the command executoin status (...

echo "A,B,C,D" | awk -F, '{print NF}'

Here NF signifies number of fields.

Each field of the line will be marked as $1, $2 etc

you can use a loop , if condition to print the required fields.

You need to initialise the variables num and sum

#!/bin/ksh

a=12346
b=`expr length $a`
echo " length : $b"
typeset -i i=1
num=0
sum=0
while (( i <= $b ))
do
((num=$(echo "${a}" | cut -c...