在ubuntu上安装wireshark之后提示Couldn‘t run /usr/bin/dumpcap in child process:权限不够

sudo apt-get install libcap2-bin wireshark
sudo chgrp xxxxxxx /usr/bin/dumpcap
sudo chmod 750 /usr/bin/dumpcap
sudo setcap cap_net_raw,cap_net_admin+eip /usr/bin/dumpcap

xxxxxxx    替换成自己的用户名