user name is unknown to sudo ??

[ramaswamyps]

root@ubuntu:/home/ramaswamy# synaptic
No protocol specified

(synaptic:1564): Gtk-WARNING **: cannot open display: :0
root@ubuntu:/home/ramaswamy#
if i use menu to invoke synaptic or adept it says

your username is unknown to sudo
message comes up

how to correct this?
i am on kde-3.5.12

[sgosnell]

Why are you running as root? Are running from a liveCD? If so, you can't install anything.

[ramaswamyps]

it is already installed ubuntu-10.10 desktop
i cannot use aynaptic from my user login.
it says i am not sudo er
thats why trying as su
anyways i cannot invoke synaptic

[sgosnell]

Add yourself to sudoers. Let me google that for you (http://lmgtfy.com/?q=add+user+to+sudoers+ubuntu)