linux screen 问题

Question

shenjianlin@newdev:~(spider)$ screen -ls
There are screens on:
    400.pts-4.newdev    (Detached)
    14148.pts-6.newdev    (Attached)
    7747.pts-7.newdev    (Detached)
    540.pts-4.newdev    (Detached)
    23163.pts-1.newdev    (Detached)
    868.pts-1.newdev    (Detached)
    9526.pts-1.newdev    (Detached)
    3955.pts-2.newdev    (Detached)
8 Sockets in /var/run/screen/S-shenjianlin.

shenjianlin@newdev:~(spider)$ screen -r 14148.pts-6.newdev
There is a screen on:
    14148.pts-6.newdev    (Attached)
There is no screen to be resumed matching 14148.pts-6.newdev.
shenjianlin@newdev:~(spider)

为啥有时候screen 挂着，我后来起不来呢？

Answer 1

screen -D -r 14148.pts-6.newdev