Running a program in the background as sudo

Question

I am on a linux virtual machine and I'm trying to run the command sudo synaptic & which should start synaptic in the background. However, it doesn't ask for the password and the program doesn't seem to start. I have not typed my password earlier, as running any other command withouth the & at the end ask for my password. What is the problem?

Answer 1

You can run sudo bash -c 'synaptic &'

Answer 2

sudo --help says about option -b

-b, --background              run command in the background

This worked for me

sudo -b su -c "command what you want to run"