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1、配置vpn，Android源码被墙了
2、
mkdir android
cd android
curl https://storage.googleapis.com/git-repo-downloads/repo > repo
chmod a+x repo

向Google获取验证，（官方说话：防止匿名链接过多）
https://android.googlesource.com/new-password

初始化仓库
./repo init -u https://android.googlesource.com/platform/manifest #不启动Google验证

./repo init -u https://android.googlesource.com/a/platform/manifest #启动了Google验证

./repo init -u https://android.googlesource.com/mirror/manifest --mirror #做镜像


增加下面内容，设置dns

$ vim /etc/hosts
74.125.31.82         www.googlesource.com
74.125.31.82         android.googlesource.com
203.208.46.172    cache.pack.google.com
59.24.3.173           cache.pack.google.com


开始同步（启动4个进程）
./repo sync -j4