When running long-running batch processes or aggregation tasks, using screen might make you happy.

So I’ve summarized common patterns for using screen in order of workflow.

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Running Commands That Take Some Time

1. SSH login
2. Start screen with a session name

   screen -S samplename
   

3. Check if screen is running (OK if it shows Attached)

   % screen -ls
   There is a screen on:
           15117.samplename  (Attached)
   1 Socket in /var/run/screen/S-ec2-user.
   

4. Execute the command!!
5. Temporarily detach from the screen session

   Ctrl-a Ctrl-d

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Checking if Command Execution is Complete

1. SSH login
2. Check session list

   $ screen -ls
   There is a screen on:
     15117.samplename  (Detached)
   1 Socket in /var/run/screen/S-ec2-user.
   

3. Resume by specifying session name (Attached)

   screen -r 14418.samplename

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Reference Information

・screenコマンドを使う - インテグレイテッドシステムズ

・screenに名前をつけて管理する方法。まとめ - それマグで！

・デタッチされているscreenを削除する | Linuxで自宅サーバ構築

That’s all from the Gemba.