git 我没有 ~/.ssh/config 文件但多个 GitHub 帐户有效，如何？
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I don't have ~/.ssh/config file but multiple GitHub accounts works, how?
提问by Marian Pa?dzioch
I'm trying to configure another GitHub account to be able work from my machine. I started to looking around and I found:
我正在尝试配置另一个 GitHub 帐户以便能够在我的机器上工作。我开始环顾四周，发现：
Set up multiple ssh profiles by creating/modifying ~/.ssh/config. Note the slightly differing 'Host' values:
通过创建/修改 ~/.ssh/config 来设置多个 ssh 配置文件。请注意略有不同的“主机”值：
So as I (already) have multiple accounts working (I don't remember how and when I did that) I wanted to just add another entry in ~/.ssh/config. But it appears that I don't have such file. Maybe it is located somewhere else? Or maybe my machine is configured in some other way? Where to start searching?
因此，由于我（已经）有多个帐户在工作（我不记得我是如何以及何时这样做的），因此我只想在~/.ssh/config. 但似乎我没有这样的文件。也许它位于其他地方？或者也许我的机器以其他方式配置？从哪里开始搜索？
回答by Timothy Truckle
This is behavior of sshrather than git.
这是ssh而不是 git 的行为。
In your ~/.sshfolder you have your private key. The name of the file for your private key is id_rsaby default. When ever your ssh client has to login to a ssh server it reads the key from that file.
在您的~/.ssh文件夹中，您有您的私钥。id_rsa默认情况下，您的私钥文件的名称是。当您的 ssh 客户端必须登录到 ssh 服务器时，它会从该文件中读取密钥。
But in some cases you may want to use a different private key for authentication. In that case you create the file ~/.ssh/configand you add a section with an alias (the host name you write at the command line) the real host name and the path to he alternative key file on your local system:
但在某些情况下，您可能希望使用不同的私钥进行身份验证。在这种情况下，您创建文件~/.ssh/config并添加一个部分，其中包含别名（您在命令行中写入的主机名）、真实主机名和本地系统上备用密钥文件的路径：
# ~/.ssh/config
Host alternative-github
HostName github.com
User MyOtherGithubUser
IdentityFile /media/me/MyUsbThumbDrive/.ssh/MyOtherGithubUsers-id_rsa
Whit this configuration sshlooks on my UBS thumb drive for the private key when I clone the repo like this:
当我像这样克隆 repo 时，这个配置ssh在我的 UBS 拇指驱动器上查找私钥：
git clone git@alternative-github:/MyOtherGithubUser/someRepositoty.git
conclusion
结论
As long as you use the same public/private key pair with your git projects and the private key is available as ~/.ssh/id_rsayou don't need the file ~/.ssh/config.
只要您在 git 项目中使用相同的公钥/私钥对，并且私钥可用，因为~/.ssh/id_rsa您不需要文件~/.ssh/config.
回答by VonC
I wanted to just add another entry in
~/.ssh/config
我只想添加另一个条目
~/.ssh/config
You can create it, but:
您可以创建它，但是：
you need to have generate public/private keys with a different name
ssh-keygen -q -P "" -t rsa -f ~/.ssh/key2you need to have registered
~/.ssh/key2.pubon your remote server second accountyou need to have a config file with:
Host github2 HostName github.com User git IdentityFile /home/me/.ssh/key2
您需要生成具有不同名称的公钥/私钥
ssh-keygen -q -P "" -t rsa -f ~/.ssh/key2您需要
~/.ssh/key2.pub在远程服务器上注册第二个帐户你需要有一个配置文件：
Host github2 HostName github.com User git IdentityFile /home/me/.ssh/key2
Note the User here: 'git', not'another GitHub account'
请注意此处的用户：“ git”，而不是“ another GitHub account”
you need to change the origin remote URL to use that entry:
git remote set-url origin github2:MySecondAccount/MyRepo.git
您需要更改源远程 URL 以使用该条目：
git remote set-url origin github2:MySecondAccount/MyRepo.git
