Conditionally setting DISPLAY variables in bash

A tiny snippet of useful bash shell code today, to help with setting your DISPLAY variable if integrating Cygwin/X into your Windows environment, add it to a .bashrc for effect.

Launching X apps from the ‘Cygwin Terminal’ is smoothed as a result.

#RT Check for XWin and set DISPLAY if present.

ps -a | grep -v grep | grep /usr/bin/XWin > /dev/null


if [ “${result}” -eq “0” ] ; then

 export DISPLAY=localhost:0.0


echo “No server running, DISPLAY not set.”


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