UNIX for Advanced & Expert Users

for i in `cat users.dat | awk '{print $2}'
total=0 
do
  for j in `grep $i mailuse.dat | awk '{sum+=$2}'
  do
  total=`expr $total + $j`
  echo $total, $j
  done
done

#! /usr/bin/ksh

firsttime=1

sort mailuse.dat | while read user count date ; do
        if ((firsttime)) ; then
                firsttime=0
                olduser=$user
                sum=0
        fi

        if [[ $user != $olduser ]] ; then
                echo $olduser $sum
                olduser=$user
                sum=0
        fi
        ((sum=sum+count))

done

echo $olduser $sum

exit 0

#!/bin/sh
rm /tmp/mails.log  # remove old logs
for i in `cat walusers.dat | awk '{print $1}'`
do
 total=0;
 echo $i; # shows which users have gone by!!
 for j in `grep $i maildeli.final | awk '{print $2}'`
  do 
  echo $j;
  total=$total+$j;
  done;
 echo $i " " $total >>/tmp/mails.log;
done