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I'm looking for a method of reporting display resolution. I want to set up scripts to launch rdesktop, and I want to launch it on several machines with different resolutions, so I want a way to dynamically determine it.

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3 Answers

up vote 8 down vote accepted

Use the command xrandr. Without any argument it displays the available resolutions and the current one (with an asterisk).

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Could you append some sample output to the answer? And I'm guessing xrandr |g grep \* does the trick? – shurane Apr 26 at 19:38
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Alternative solution: xdpyinfo | grep dimensions. xdpyinfo is older than xrandr, so might be more portable if you happen to use a very old distribution or some different X server.

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up vote 4 down vote

I should have looked a little harder before posting. xrandr will echo the current display settings, if not given any other arguments.

By default, this will dump all possible display settings, this can be filtered as follows:

xrandr | egrep '^[^ ]|[0-9]\*\+'
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