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I would like to, every 30 seconds or so, copy all text of a certain terminal or terminal emulator to a file, and display it in conky. I'm not talking about simple redirection (command > file), which doesn't work for ncurses programs or games such as NetHack.

How could I go about doing this?

  • if it's a console terminal, you can get the contents from /dev/vcs* – Jasen Nov 9 '15 at 8:57
  • That'll work! Is it possible to open more than the default 6 (or whatever your distro uses)? – IBPX Nov 9 '15 at 17:53
  • You want text, so the accepted screen answer is indeed right. But for others who land here looking for a graphic screenshot of a Linux console running without X or any GUI, there is fbgrab as suggested in askubuntu.com/a/558588/8822 – mivk Jan 9 '18 at 12:25
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There is no portable way to ask a terminal emulator to do screen dumps. You can work around this by running your application in GNU screen or tmux and using them to carry out the screen-dumps.

GNU screen can do this:

Likewise, there is a plugin for tmux to do screen captures.

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