和之前一样，最后一步执行git push origin master，这时候提示失败：
Permission denied (publickey).
fatal: Could not read from remote repository.

然后重新设了ssh秘钥，并且ssh -T git@github.com是可以的，返回：
Hi xxxxxx! You've successfully authenticated, but GitHub does not provide shell access.Connection to github.com closed.
但是，git push的时候，总是失败，提示是：
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.

在网上看到好多答案，比如在 .ssh 文件夹中执行 ssh-add id_rsa，返回是：
Could not open a connection to your authentication agent.
又比如，git/config设置的仓库url地址和github使用的链接地址是否一致（注：这个不明白在哪里执行，就去找到想要push的文件执行了），

cat .git/config，返回是：
[core]

    repositoryformatversion = 0
    filemode = false
    bare = false
    logallrefupdates = true
    symlinks = false
    ignorecase = true
    hideDotFiles = dotGitOnly
    这个返回跟网上看到的返回不一样，不知道怎么改。
    各位大神赐教啊！！！