Launch program on startup in background

Question

I'm running AutoKey on Ubuntu 18.04, I added it to the startup applications, but I don't want its window pops up after starting my computer, can I make it launch in the background?

Solution

To start an application at start up and put it in the background simply append & to the command you wish to execute.

An example using AutoKey:

Comments

[singrium]

Thank you for posting the correct answer, I'll delete my wrong answer.

[GrayedFox]

That's quite nice of you, and I think a good example of SO ideals :) some people just abandon answers that were not accurate or in some cases even introduce security flaws, so, thank you too