Hi there --

I have a Fedora-like system running a medical application that has two monitors attached to it. I am using the xwd utility to get the screen-captures. The command syntax that is in use is the following:

The above syntax enables captures on the first, or left, screen. I would like to do the same on the second, or right, screen. Is this possible, and if so, what would the command syntax be to use? Thanks.

Personally I would use the import command instead, since you can save it in your favourite format, and has more options, eg:
A quick test with my own root window gave more than 90% reduction in image size, and png is probably more portable than xwd. I suppose you could use xwdtopnm and then pnmtopng but that seems unnecessary.

I'm assuming that since you can't grab images from the second screen that you're using Xinerama. You would have to initiate the xwd command above from a terminal open on the second screen. If you're using an NVidia video card, I understand that TwinView doesn't have this limitation and is faster to boot.