I have to (scriptly) take screenshots of windows, some of which may be partially or fully hidden by other windows. Of course, in such a case the screenshot is useless, and I'd rather print a warning. ...
Using Xvfb I can launch an application and take a screenshot. What I'm wondering about is how to capture from an existing (dormant) X session. Say from tty or over ssh. From what I understand ...
How can I record all activity on the screen for a certain amount of time? I know about tools like xwd that capture a still image; can they be extended to record video? I'd prefer not using any fancy ...