Install Screen: brew install screen

Enter a new Screen Session: screen or screen -S <name>

Detach from current screen session: Ctrl + a + d

List screen sessions: screen -ls

List the processes: ps -e | grep PID_OF_SCREEN_SESSION

Reattach to a screen session: screen -r PID_OF_SCREEN_SESSION

Execute a command in a screen session: screen -X -S PID_OF_SCREEN_SESSION <cmd>