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I am trying to automate my work flow. I have a script that opens individual window in screen for each IP in a list. Imagine setupscreen.sh <IP1> <IP2> .... After all windows are open, each sshs to the proper server and sets the title to hostname on that particular server. I keep window 0 as my utility window from where I execute other scripts. For example I send commands to all windows, loop over each window with 1 second interval, and so on. This is all good, but the problem is, I get the window count from my script when I create them. If I close a window, this is no longer accurate. The question is how can I get (through scripting) my window count and if possible the remaining windows indexes.

p.s. All clusters I need to login and perform tasks have screen and almost non of them have tmux and it's hustle to get it there.

  • Screen is no longer being actively developed, tmux offers a better solution and is still receiving updates. – Joe Sep 25 '15 at 17:31
  • The closest thing I'm aware of would be the windowlist command (Control-A w) – Jeff Schaller Sep 25 '15 at 17:36
  • @Joe I know this but it's not up to me. This is why I have the note on the bottom. – Lyubo Sep 25 '15 at 19:22
  • @JeffSchaller if I can only catch somehow the output of ctrl-a-w ( or better ctrl-a-") I'll be happy. – Lyubo Sep 25 '15 at 19:24
4

screen -Q windows

will print out your active screen windows with index & title.

  • This is pipe-able but you still would catch a pause in the shell script before it would output. Seems very strange to me. – Joe Sep 26 '15 at 3:05
  • On the machines I work with, screen is not compiled with -Q. – Lyubo Oct 29 '15 at 1:45
  • It is useful, but will not work in all cases. From documentation of the "windows" command: "If this list is too long to fit on the terminal's status line only the portion around the current window is displayed." So, you are not guaranteed the full list. – jwd Mar 23 '18 at 23:48

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