From 50ab8d2bd165587173b3853fe5e4155e3299315e Mon Sep 17 00:00:00 2001
From: bin456789 <bin456789@gmail.com>
Date: Sat, 15 Jul 2023 23:39:45 +0800
Subject: [PATCH] =?UTF-8?q?ubuntu:=20=E6=B7=BB=E5=8A=A0=20dig=20=E6=B3=A8?=
 =?UTF-8?q?=E9=87=8A?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 user-data | 1 +
 1 file changed, 1 insertion(+)

diff --git a/user-data b/user-data
index 1a7ca76..8e485c1 100644
--- a/user-data
+++ b/user-data
@@ -27,6 +27,7 @@ autoinstall:
 
       # 禁用 DNS  强制离线安装内核和跳过最后的更新
       # 但安装器会配置时区和写入最近的mirror到/etc/apt/sources.list 所以要提前解析
+      # dig会显示cname结果，cname会以.结尾，grep -v '\.$' 表示去除 cname 结果
       echo $(dig +short geoip.ubuntu.com | grep -v '\.$' | head -1) geoip.ubuntu.com >>/etc/hosts
       sed -i -E 's/(^nameserver )/#\1/' /etc/resolv.conf
   late-commands: