when i type 'Sudo su' - "User not in the sudoers file.This incident will be reported"
I am very new to the Ubuntu 12.10, I am facing a 2 basic problems,
1.when i type 'sudo su' in the command prompt, i am getting a Error Message as "User not in the sudoers file.This incident will be reported"
2. when i type 'visudo' i am getting "visudo: etc/sududoersermission Denied"
I tried lot of things to solve this issue but not succesfull
Could you anyone please help me out in this issue?