Action
Use screen command to prevent "Broken Pipe" messages and terminal session timeouts
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| When connecting to our systems (head, headnode7, lmm, etc.) via PuTTY, or terminal in mac when there is a disruption in the ssh connection, you will see a "Broken Pipe" error and loose access to any programs that were running, without being able to recover them. Screen and tmux allow you to "detatch" a session (i.e. keep it running in the background), and move on to another task in the same terminal window, or disconnect from the machine and let your code keep running. |
Instructions
Basic Linux Screen Usage
After connecting to a machine from PuTTY, terminal, etc., type
Code Block language bash screen
- Run the desired program
Use the key sequence
Ctrl-a + Ctrl-dctrl ad to detach from the screen session, this will keep it running in the background and return to your main shell
- Note, if you do not detach the session, you can restore if the connection drops by reconnecting and running screen -r
To see a list of active screen sessions, type
Code Block language bash screen -ls
Reattach to the screen session by typing
Code Block language bash screen -r [your session id here]
There are many useful tutorials for using screen to preserve terminal sessions, here is one: https://linuxize.com/post/how-to-use-linux-screen/#starting-linux-screen
Basic tmux usage
After connecting to a machine from PuTTY, terminal, etc., type
Code Block language bash tmux
- Run the desired program
- Use the key sequence Ctrl+b d to detatch the session
To see a list of active tmux sessions
Code Block tmux -ls
To reattach a tmux session type
Code Block language bash tmux attach-session -t [your session id here]
There are many useful tutorials for using tmux to preserve terminal sessions, here is one: https://linuxize.com/post/getting-started-with-tmux/#starting-your-first-tmux-session
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