Gfilui

I have xrandr output as follows

HDMI1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm
 1920x1080 60.00*+ 50.00 59.94 
 1920x1080i 60.00 50.00 59.94 
 1680x1050 59.88 
 1400x1050 59.95 
 1600x900 60.00 
 1280x1024 75.02 60.02 
 1440x900 59.90 
 1280x800 59.91 
 1152x864 75.00 
 1280x720 60.00 50.00 59.94 
 1024x768 75.03 60.00 
 800x600 75.00 60.32 
 720x576 50.00 
 720x480 60.00 59.94 
 640x480 75.00 60.00 59.94 
 720x400 70.08 
HDMI2 disconnected (normal left inverted right x axis y axis)
VGA1 connected 1600x900+1920+0 (normal left inverted right x axis y axis) 440mm x 250mm
 1600x900 60.00*+
 1440x900 59.89 
 1280x800 59.81 
 1152x864 75.00 
 1280x720 60.00 
 1024x768 75.03 60.00 
 832x624 74.55 
 800x600 75.00 60.32 56.25 
 640x480 75.00 59.94 
 720x400 70.08 

How can compose a bash script to get the available resolutions from xrandr result above.

for example
the-script HDMI1 will output only

HDMI1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 480mm x 270mm
 1920x1080 60.00*+ 50.00 59.94 
 1920x1080i 60.00 50.00 59.94 
 1680x1050 59.88 
 1400x1050 59.95 
 1600x900 60.00 
 1280x1024 75.02 60.02 
 1440x900 59.90 
 1280x800 59.91 
 1152x864 75.00 
 1280x720 60.00 50.00 59.94 
 1024x768 75.03 60.00 
 800x600 75.00 60.32 
 720x576 50.00 
 720x480 60.00 59.94 
 640x480 75.00 60.00 59.94 
 720x400 70.08 

I have tried

xrandr | awk '/HDMI1.*?/,/.*connected [0-9].*/'

while the result is close to what I want, but using

xrandr | awk '/VGA1.*?/,/.*connected [0-9].*/'

does not list the resolutions under VGA1 output.

Any help appreciated, thank you.

A simpler version of the awk command for the script:

xrandr |
 awk -v monitor="^$MONITOR connected" '/connected/ p = 0
 $0 ~ monitor p = 1
 p'

Bottom to top:

• 
  p tells awk to run the default action (printing) depending on whether it's true or false)


• if the line matches the monitor and is connected we set p to true


• for all other monitor lines we set p to false

Well, figure it out,

#!/bin/bash
#usage the-script XRANDR_OUTPUT_NAME
#e.g the-script HDMI1
MONITOR=$1;
xrandr | grep -v disconnected | 
awk ' 
 if(/^'$MONITOR' connected/) 
 print $0; 
 m="t"; 
 else if(m == "t") 
 if (/^[a-zA-Z]/)
 exit 
 else 
 print $0
 
 
'

Hope this will help some one.

With GNU awk:

#!/bin/sh

xrandr --query | gawk -v monitor="$1" '
 $0 ~ monitor && $0 !~ /disconnected/ 
 do print
 while (getline > -1 && $0 ~ /^[[:blank:]]/)
 
'

Usage:

$ ./the_script LVDS-1
LVDS-1 connected primary 1440x900+0+0 (normal left inverted right x axis y axis) 303mm x 190mm
 1440x900 60.00*+ 59.89 50.00 
 1360x768 59.80 59.96 
 1152x864 60.00 
 1024x768 60.04 60.00 
 960x720 60.00 
 928x696 60.05 
 896x672 60.01 
 960x600 60.00 
 960x540 59.99 
 800x600 60.00 60.32 56.25 
 840x525 60.01 59.88 
 800x512 60.17 
 700x525 59.98 
 640x512 60.02 
 720x450 59.89 
 640x480 60.00 59.94 
 680x384 59.80 59.96 
 576x432 60.06 
 512x384 60.00 
 400x300 60.32 56.34 
 320x240 60.05 

If you don't have GNU awk, you may need to replace [[:blank:]] with [ t]