$ perl -ne '$l=$_ if /received/; END{print $l}' /var/log/rsync.log
2017/04/20 10:50:24 [26050] sent 25 bytes  received 326 bytes  total size 52165551

##</code><code>##

 perl -ne '$l=$_ if /received/; END{print $l}; ($date) = $1 =~ m/^(\d+\/\d+\/\/d+) .*/g ; print $date, " \n" ' /var/log/rsync.log