Question : How to avoid sudo password prompt ?
Answer :
First
Assign the permissions to the sudoers file, by running the following command:
chmod 740 /etc/sudoers
Second:
Edit file /etc/sudoes with Vi or gedit or nano
nano /etc/sudoers
and replace
%admin ALL=(ALL) ALL
with
%admin ALL=(ALL) NOPASSWD: ALL
Save and exit
Enjoy