Using command line '-X' to send commands to multiuser session

[Rod Nussbaumer]

Screen Gnurus:

I can attach to an existing multiuser session that is owned by onother 
user and type input to the shell or other application running in the 
screen session. This, of course, is according to spec, and is exactly 
how it is intended.

What I would really like to do is send input to that same multiuser 
session using the '-X stuff ....' command line. Have I overlooked a key 
configuration or other switch that allows me to do this?

Here is a simple example of what I mean...


$ screen -v
Screen version 4.00.02 (FAU) 5-Dec-03
$ screen -S test01/ -list
There is a suitable screen on:
        21614.pts-88.edevel23pc (Multi, attached)
1 Socket in /tmp/screens/S-test01.

$ screen -S test01/21614 -x
[detached]
$ screen -S test01/21614 -X 'stuff ls -al'
Cannot opendir /tmp/screens/S-test01: Permission denied



This sounds, on the surface, to be fairly easy to 'fix'. Any pointers? 
Anyone already done this?

   ---   rod.