display: unable to open X server

问题

I am running ImageMagick on my Mac which runs on Yosemite. I have just downloaded ImageMagick and I am trying to open the logo display by running this on the command line:

display logo.gif

after executing the above command, I am getting the following error:

display: unable to open X server `:0.0' @ error/display.c/DisplayImageCommand/426.

I've implemented all the steps to install ImageMagick, including executing the following command:

export DISPLAY=:0.0

and I am still not getting the display to show up. When I echo $DISPLAY, my console shows 0.0.

How can I fix this error? Any help is appreciated.

回答1:

Do not attempt to export the $DISPLAY environment variable, as this will be set when X11 (XQuartz) is launched. On OS X, this is usually a unique unix path. Something like:

 echo $DISPLAY
 #=> /private/tmp/com.apple.launchd.CWOgR6ULcX/org.macosforge.xquartz:0 

The best way to start X sever (IMHO) is to use Spotlight

1. ⌘ + space
2. Search for "X11" followed by ↩
3. Open new terminal window & run your display command

来源：https://stackoverflow.com/questions/36251754/display-unable-to-open-x-server