How to enable Wireshark without running as root in Trusty 14.04

I found that after running:

sudo dpkg-reconfigure wireshark-common

a wireshark group been created in /etc/gshadow. So I just wrote:

sudo gpasswd -a $USER wireshark

and logout/login and now it works fine!

Yes, you did correct. But some thing is missing.If you see the error message like couldn't run /usr/bin/dumpcap in child process: Permission Denied.Go to terminal and

sudo dpkg-reconfigure wireshark-common

choose answer as "YES" .Then add user to the group by

sudo adduser $USER wireshark

Then restart your machine and open wireshark. It works.

sudo setcap 'CAP_NET_RAW+eip CAP_NET_ADMIN+eip' /usr/bin/dumpcap

Check this question