nohup gnome-calculatorĪnd for the longer-term processes, there are things like screen and other virtual terminal-muxers that keep sessions alive between connections. If you rely on that, it might be for you. I'm not wild about nohup because it has a tendency to write to ~/nohup.out without me asking it to. This simple method works: (gnome-calculator &)Īnd of course there's nohup as you mentioned. I also just learnt about spawning subshells with parenthesis. You use it in conjunction with the backgrounding ampersand: gnome-calculator & disown I'm also quite partial to disown which can be used to separate a process from the current tree. This is because the command actually forks out and while the input comes through to the current terminal, it's owned by a completely different parent (that remains alive after you close the terminal). It starts off looking like you're just running something from the terminal but you can disconnect (close the terminal) and it just keeps going. What special privileges “/system/xbin/su” does have w.r.t.I've recently come to like setsid.However the app itself is still running with its own UID (assigned at the time of installation). The special su binary (the one provided by rooting solutions like Magisk) connects to a background daemon to get a root shell for the requesting app, where the app can execute commands with root privileges. This is not possible on Android due to certain restrictions. The usual su binary (like on any UNIX-like OS) makes a transition to UID 0 by making setuid syscall to kernel. To grant root access to apps you need a special su binary which is not shipped with Android. So all commands which you run through adb have root privileges.

by executing adb root or adb shell su) it runs adbd process on device as root (UID 0) user. When you get root privileges on adb (e.g. In order to let apps request root privileges, you need to root your device using e.g.

It's the developer of the app who decides if the app would perform some tasks with root privileges or not.

You don't give certain apps root permission, but certain apps ask for root permission by executing su binary.

Su binary occupied