grep ACC remd_dfa.out_GB000 |tail -7
exchange=`grep ACC remd_dfa.out_GB000 |tail -7|awk '{a=a+$4}END{print a/NR}'`
echo "average exchange = ${exchange}"
grep ACC remd_dfa.out_GB000 |tail -7
exchange=`grep ACC remd_dfa.out_GB000 |tail -7|awk '{a=a+$4}END{print a/NR}'`
echo "average exchange = ${exchange}"