vncserver :1 -xstartup "xfce4-session" starts up a program afaik I did not specify to run anywhere.vncserver :1 -xstartup "nice" which doesn't exist then checking ps shows me the program doesn't run there but when I run DISPLAY=:1 xfce4-session it appears.termux-x11 -xstartup "xfce4-session".