--quit doesn't actually quit
$ rpm -q gnome-software
gnome-software-3.32.4-3.fc30.x86_64
$ ps aux | grep gnome-software
hadess 2305 0.0 4.9 1553016 812836 tty2 Sl+ Oct31 5:43 /usr/bin/gnome-software --gapplication-service
hadess 17084 0.0 0.0 215744 888 pts/5 S+ 11:53 0:00 grep --color=auto gnome-software
$ gnome-software --quit
$ ps aux | grep gnome-software
hadess 2305 0.0 4.9 1553016 812836 tty2 Sl+ Oct31 5:43 /usr/bin/gnome-software --gapplication-service
hadess 17103 0.0 0.0 215744 824 pts/5 S+ 11:53 0:00 grep --color=auto gnome-software
$ gnome-software --help | grep quit
--quit Quit the running instance
Does it just close the window? If so, could you please fix the help and the man page to say this, it was very confusing when I actually wanted "the running instance of gnome-software" to quit.
Edited by Bastien Nocera