Update update_dev.sh

scripts/update_dev.sh

@@ -69,7 +69,14 @@ if [ -f /bin/cp ];then
 		CP_CMD=/bin/cp
 fi
 echo "update panel code start"
-$CP_CMD -rf /tmp/mdserver-web-dev/* /www/server/mdserver-web
+if [ -f /usr/bin/cp ];then
+	/usr/bin/cp -rf /tmp/mdserver-web-dev/* /www/server/mdserver-web
+elif [ -f /bin/cp ];then
+	/bin/cp -rf /tmp/mdserver-web-dev/* /www/server/mdserver-web
+else
+	/usr/bin/cp -rf /tmp/mdserver-web-dev/* /www/server/mdserver-web
+fi
+
 echo "update panel code end"
 
 rm -rf /tmp/dev.zip