command screen

info

1. screen manager with vt100/ansi terminal emulation

demo

1. create

   1. create with name

       $ ssh root@demo
       $ screen -S gree2
       $ # do sth
       $ ls
       ...
       $ mkdir demo
       ...
       $ ls
       ...
      

   2. detach running session

       $ ^a d
      

2. list all sesstions and reattach

   1. list

       $ screen -ls
       There are screens on:
           13494.gree2 (Detached)
           11576.pts-0.node4   (Detached)
       2 Sockets in /var/run/screen/S-root.
      

   2. reattach

       $ screen -r gree2
       $ # or
       $ screen -r 13494
      
       $ # do sth
       $ ls
       ...
       $ mkdir demo
       ...
       $ ls
       ...
      

3. share session multi display mode

   1. attach to a not detached screen session

       $ # on a different host
       $ ssh root@demo
       $ screen -ls
       There are screens on:
           13494.gree2 (Attached)
           11576.pts-0.node4   (Detached)
       2 Sockets in /var/run/screen/S-root.
      
       $ screen -x gree2
       $ # do sth
       $ ls
       ...
       $ mkdir demo
       ...
       $ ls
       ...
      

4. destroy current window

   1. use ^a k

       $ ^a k
      
       Really kill this window [y/n]
       [screen is terminating]
      
       $ screen -ls
       There is a screen on:
           11576.pts-0.node4   (Detached)
       1 Socket in /var/run/screen/S-root.
      

5. download docker image from screen session

   1. start a new sesstion

       $ screen -S mssql
       $ docker pull microsoft/mssql-server-linux:2017-CU8
       2017-CU8: Pulling from microsoft/mssql-server-linux
       f6fa9a861b90: Pull complete
       da7318603015: Pull complete
       6a8bd10c9278: Pull complete
       ...
      
       $ ^a d
      

   2. wait

   3. reattach mssql session

       $ screen -r mssql
       docker pull microsoft/mssql-server-linux:2017-CU8
       2017-CU8: Pulling from microsoft/mssql-server-linux
       f6fa9a861b90: Pull complete
       da7318603015: Pull complete
       6a8bd10c9278: Pull complete
       d5a40291440f: Pull complete
       bbdd8a83c0f1: Pull complete
       3a52205d40a6: Pull complete
       6192691706e8: Pull complete
       1a658a9035fb: Pull complete
       655776156720: Pull complete
       0c695ca332a2: Pull complete
       Digest: sha256:70e2a80e516935701ca109c57fa2aede152460d2da6f20d349afce8a93156a28
       Status: Downloaded newer image for microsoft/mssql-server-linux:2017-CU8
      
       $ docker images
       REPOSITORY                      TAG                 IMAGE ID            CREATED             SIZE
       microsoft/mssql-server-linux    2017-CU8            229d30f7b467        2 weeks ago         1.43 GB
      

   4. kill mssql session

       $ ^a k
       [screen is terminating]
       $ screen -ls
       No Sockets found in /var/run/screen/S-root.
      

references

1. https://www.computerhope.com/unix/screen.htm