sending an arbitary command to a detached session

[Faheem Mitha]

Hi,

> From the screen documentation, it looks like something similar to the 
following should work, but it doesn't. If it is not already clear from the 
commands below, I want to send an arbitrary command to run in a detached 
screen instance. Any recipe that works would be appreciated. Please CC me 
on any reply.

                                                      Regards, Faheem

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# create detached foo screen instance
address@hidden:~$ screen -dmS foo
address@hidden:~$ screen -ls
There is a screen on:
        30938.foo       (02/12/2010 06:39:33 PM)        (Detached)
1 Socket in /var/run/screen/S-faheem.

address@hidden:~$ screen -S foo -X emacs -nw somefile
address@hidden:~$ screen -r foo
# attaching to the foo screen session but nothing there