安装iperf3

iperf3_version=3.2
iperf3_url=https://github.com/esnet/iperf/archive/$iperf3_version.tar.gz
wget $iperf3_url
tar xf $iperf3_version.tar.gz
pushd iperf-$iperf3_version
./configure; make; make install
ldconfig
popd
PATH="$PATH:/usr/local/bin"
iperf3 -v > /dev/null 2>&1