ruby-on-rails – 无法推送到github,ssh：无法解析主机名

我不能通过这个,多次重建存储库,使ssh密钥结束

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demo_app <username>$git remote add origin git@github.com:<username>/demo_app.git

fatal: remote origin already exists.

$git push -u origin master
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ssh: Could not resolve hostname git: nodename nor servname provided, or not known
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fatal: Could not read from remote repository.
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Please make sure you have the correct access rights
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and the repository exists.
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Checked ssh keys

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$ssh -T git@github.com

Hi <username>! You've successfully authenticated, but GitHub does not provide shell access.

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仍然收到相同的消息.

而不是添加一个新的远程,请尝试使用以下命令更改现有的远程：

git remote set-url origin git@github.com:<username>/demo_app.git

编辑：所以,这里是使它的工作,而不会丢失你的代码的命令.

> rm -rf .git

> git init

git remote add origin git@github.com：<username> /demo_app.git

> git commit –allow-empty -m’首先提交’

> git push origin master