When you wish to run any sort of commands in Ubuntu, you’ll be prompted to provide your Ubuntu password for authentication. But if you are a regular user then you might not have permission to alter any changes. So in this kind of situation, you can allow any normal user to run programs by having root user privileges
Always keep in mind not to authenticate any unknown user prior to your knowledge because they may harm your system easily. Just have a glance at this article to find out about how to allow users to Run Programs as a Root user in Ubuntu 14.04.
Step 1: First open your terminal by using “Ctrl+ALT+T” key combination and then type: “sudo visudo”and then press enter.
Step 2: You’ll be prompted to provide your Ubuntu password. Just type your password and hit enter.
Step 3: Now, you may see “/etc/sudoers.tmp” file. Here you have to place a code which is used to authenticate specific users as a root user.
Step 4: Just traverse to the bottom of that file and then type “username ALL = NOPASSWD: /usr/bin/apt-get”and then press “Ctrl+X” to exit the file.
Step 5: Now press “y”(yes) in order to save the modified buffer.
Step 6: You can also rename your file, but it is recommended to press enter and not to alter your file name.
Step 8: Now you’ll not be prompted to provide your Ubuntu password as you are now acting as the root user.
That’s all friends. Keep reading.