start X.org on windows with cygwin.

cygwin-startx.sh

#/bin/bash

# create a LNK file:
# C:\cygwin64\bin\mintty.exe -w hide -h error -e /bin/env /usr/local/bin/startx.sh
#      ^ cygwin install path                                          ^ this file path in cygwin root

set -x
set -e

export PATH="/bin:/usr/bin:/usr/local/bin:/sbin:/usr/sbin"

LIST="$(screen -list 2>&1 || true)"
RET=$?

function alert {
	[ ! -e /tmp/msgbox.js ] || echo "WScript.Echo(WScript.Arguments.Item(0));" > /tmp/msgbox.js
	/cygdrive/c/WINDOWS/system32/wscript "$(cygpath --mixed /tmp/msgbox.js)" "$@"
}

if [ $RET -eq 0 ] ; then
	if echo "$LIST" | grep -q 'xorg' ; then
		if echo "$LIST" | grep 'xorg' | grep -q 'Dead' ; then
			alert "process died..."
			screen -wipe || true
		else
			alert "server already started."
			exit 0
		fi
	fi
else # may be no screen, and may be error
	if echo "$LIST" | grep -q 'No Sockets found in' ; then
		echo "no screen. start new."
	else
		alert 'something worng...'
		exit 1
	fi
fi

cat << START_X > /tmp/start-xwin.sh
#!/bin/sh
X :${1-0} -ac +bs -wm -listen tcp -reset +xinerama -clipboard \
	-compositealpha -compositewm -noemulate3buttons -keyhook -lesspointer \
	-wgl -nounixkill -nowinkill -logverbose 0 -logfile xorg.log -silent-dup-error \
	-multiwindow -primary -multimonitors # -screen 0 @1 -screen 1 @2
START_X


cd /home
rm -f xorg.log.old xorg.log
screen -L -dmS xorg sh "/tmp/start-xwin.sh"
screen -list

echo "debug: exit end."