I have a systemd service file that runs a java program in another tty
[Unit] Description=java program After=network-online.target [Service] Type=simple ExecStart=/usr/bin/java -cp "/home/user/someclass.jar" Restart=always RestartSec=10 StandardInput=tty-force StandardOutput=inherit StandardError=inherit TTYPath=/dev/tty10 TTYVTDisallocate=yes TTYReset=yes TTYVHangup=yes [Install] WantedBy=multi-user.target
The program waits for input in the tty, I can change to that tty by using Ctrl+Alt+F10 or using
chvt 10 and I'm able to interact with the program.
Now I want to send input and get output from that tty without changing my current tty.
I tried using
screen and all I get is a blank screen and. I tried using
script which succeeded if I run bash in that tty but fails If i run a java program