calculate transfer out from wowza logs

xfer-wowza-logs.sh

#  To calculate the bandwidth usage per session, subtract sc-bytes in the “connect” event by sc-bytes in the “disconnect” event
connect=`grep $'\tconnect' wowzastreamingengine_access.log.????-??-?? | cut -f22 |  awk '{total = total + $1}END{print total}' `
disconnect=`grep $'\tdisconnect' wowzastreamingengine_access.log.????-??-?? | cut -f22 |  awk '{total = total + $1}END{print total}' `
SESSION=`expr $connect - $disconnect`
echo -e "Bandwidth usage per session, subtract sc-bytes in the *connect* event by sc-bytes in the *disconnect* event\n"
echo -e " $SESSION bytes"
#  To calculate the bandwidth usage per stream, subtract sc-stream-bytes in the “play” event from sc-stream-bytes in the “stop” event.
play=`grep $'\tplay' wowzastreamingengine_access.log.????-??-?? | cut -f27 |  awk '{total = total + $1}END{print total}' `
stops=`grep $'\tstop' wowzastreamingengine_access.log.????-??-?? | cut -f27 |  awk '{total = total + $1}END{print total}' `

PERSTREAM=`expr $stops - $play`
echo -e "Bandwidth usage per stream, subtract sc-stream-bytes in the *play* event from sc-stream-bytes in the *stop* event.\n"
echo " $PERSTREAM bytes"