Shell Programming and Scripting

if <whatever your condition is>
then
   ((i=`cat statusfile`+1))
   echo $i > statusfile
   if [ $i -le 5 ]
   then
       sendmail commands here
   fi
else
   echo 0 > statusfile     # Make sure there is a space after the zero
fi

if <whatever your condition is>
then
   ((i=`cat statusfile`+1))
   echo $i > statusfile
   if [ $i -le 5 ]
   then
       if [ `date +%H` -ge 8 -a `date +%H` -lt 18 ]
       then
          sendtolist="aaa@abc.com; bbb@abc.com; ccc@abc.com"
       else
          sendtolist="xxx@abc.com; yyy@abc.com; zzz@abc.com"
       fi
       sendmail commands here using $sendtolist
   fi
else
   echo 0 > statusfile     # Make sure there is a space after the zero
fi