Issue
How do you block unix/linux wall
messaging?
Example:
SSH somemachine
WALL annoy the s*** out of people on machine
Desired goal: deny wall on owned machine
Solution
mesg n
From the man page
DESCRIPTION
Mesg controls the access to your terminal by others. It's typically used to allow or disallow other users to write to your terminal (see write(1)).
Edit:
This will not prevent root
from sending wall messages
Answered By - Alex Answer Checked By - Candace Johnson (WPSolving Volunteer)