First thing, add repositories
open the /etc/apt/sources.list file in your favourite text editor as rootIn the terminal:
@ nano /etc/apt/sources.list
Paste the following lines ONLY the one missing from your source list :
deb http://http.kali.org/kali kali main non-free contrib
deb http://security.kali.org/kali-security kali/updates main contrib non-free
SAVE and then UPDATE your system
@ apt-get update
@ apt-get update
@ apt-get install startupmanager
