How to resume screen?

Question

Let's say I have many screens open, and I would like to resume to a particular screen session using 'screen -r ' this is wahat i get when I execute screen -r There are several suitable screens on:

12670.pts-8.b-dev03 (Detached) 23662.pts-9.b-dev03 (Detached) 502.pts-1.b-dev03   (Attached) 19972.pts-1.b-dev03 (Detached) 9414.pts-24.b-dev03 (Attached) 16607.pts-1.p-dev03 (Detached) 3015.pts-2.b-dev03  (Detached) 14313.pts-18.b-dev03    (Attached)  Type "screen [-d] -r [pid.]tty.host" to resume one of them. 

How do I resume one of them, lets say the last one which is attached. I have tried -

screen -r 14313.pts-18.b-dev03  There is a screen on: 14313.pts-18.b-dev03    (Attached) There is no screen to be resumed matching 14313.pts-18.b-dev03. 

Answer 1

The wording is a little unlucky - this happens because there still is a screen session attached to 14313.pts-18.b-dev03 and you cannot simply "resume" a non-detached session. You need to use the -x option in addition to attaching to this session with a second screen instance (or, alternatively, detach the existing session first):

-x

  Attach to a not detached screen session. (Multi display mode). 

$ screen -xr 14313 

If you wish to detach the first session instead:

-d -r

  Reattach a session and if necessary detach it first. 

$ screen -dr 14313