I have a program that runs when the Pi is booted.
The print statements are not displaying on additional terminal sessions.
I can only get the print statements when I kill the auto-booted process and restart the program.
Is there a method to broadcast print messages to all users - like the message displayed then typing 'Halt'?
Thx
You are looking for the wall BSD function.

NAME
       wall -- write a message to users
SYNOPSIS
       wall [-g group] [file]
DESCRIPTION
       The wall utility displays the contents of file or, by default, its standard input, on the terminals of all currently logged in users.
Raspberry Pi & Python 2.7 - trying to print to all users