HOW TO GIVE SUDO ACCESS TO USER RUN TCPDUMP

make a backup of /etc/sudoers file

cp /etc/sudoers /tmp/sudoers.date

Then edit the /etc/sudoers file  here we can edit in 2 ways

1:- vi sudoers
or
2:- visudo

visudo is the recomandded to edit the sudoers file
here you go

# visudo
add below enterie  ( " suppose you need to give sudo access to ramesh" ) here what you need to add

ramesh ALL=(root) NOPASSWD: /usr/sbin/tcpdump

:wq!

Now user can run tcpdumps using below command

#sudo tcpdump**********************