Find screen resolution in X11

VlnChemE · 09-14-2006, 03:36 PM

I would like to create a script that will create xterms of a certain size depending on the screen resolution. I have not been able to find a way to get the screen resolution (other than by setting it in xorg.conf, etc...). Any suggestions?

Thank you in advance.

Leisy · 09-14-2006, 04:39 PM

gnome-display-properties from gnome control center are showing that but in its own window...but sources can give a clue

Leisy · 09-14-2006, 05:07 PM

Or you can try something like this:

# grep "Virtual size" /var/log/Xorg.0.log | awk '{ print $6; };'
1400x1050

theNbomr · 09-14-2006, 05:33 PM

That only tells you the size of an X server running on the computer your shell is running on. This will tell you about the X server you are actually viewing (which is more likely what you want).

Code:

xdpyinfo | grep dimensions | awk '{print $2;}'

--- rod.

JrLz · 09-14-2006, 08:18 PM

try to use xrandr command

VlnChemE · 09-14-2006, 08:20 PM

Thank you Rod (theNbomr). The xdpyinfo worked. I did not know of that command and my searches with man -k did not bring it up as screen and/or resolution are not in the man description. Thank you again.

VlnChemE · 09-19-2006, 06:38 PM

Here are the lines of a shell script (sh) that allowed me to calculate the ratio of the screen width:height and then use that ratio to decide the height of an xterm that will be created.

Thanks again for all your help.

# get ratio of width to height of screen
res=`xdpyinfo | grep dimensions | awk '{print $2}' | sed -e 's/x/\//'`
RATIO=`echo scale=4';' $res | bc`
if [ $RATIO > 1.5 ]; then
XTERMH=20;
else
XTERMH=30;
fi