这个答案是给初学者的(非git大师)。我最近遇到了这个问题，也许这只是我的问题，但大多数答案似乎需要对git有相当深入的了解。在阅读了包括这个线程在内的几个堆栈溢出的答案后，下面是我需要采取的步骤，以便在GitHub帐户之间轻松切换(例如，假设有两个GitHub帐户，github.com/personal和gitHub.com/work):

Check for existing ssh keys: Open Terminal and run this command to see/list existing ssh keys ls -al ~/.ssh files with extension .pub are your ssh keys so you should have two for the personal and work accounts. If there is only one or none, its time to generate other wise skip this.- Generating ssh key: login to github (either the personal or work acc.), navigate to Settings and copy the associated email.now go back to Terminal and run ssh-keygen -t rsa -C "the copied email", you'll see:Generating public/private rsa key pair. Enter file in which to save the key (/.../.ssh/id_rsa): id_rsa is the default name for the soon to be generated ssh key so copy the path and rename the default, e.g. /.../.ssh/id_rsa_work if generating for work account. provide a password or just enter to ignore and, you'll read something like The key's randomart image is: and the image. done.Repeat this step once more for your second github account. Make sure you use the right email address and a different ssh key name (e.g. id_rsa_personal) to avoid overwriting. At this stage, you should see two ssh keys when running ls -al ~/.ssh again. Associate ssh key with gitHub account: Next step is to copy one of the ssh keys, run this but replacing your own ssh key name: pbcopy < ~/.ssh/id_rsa_work.pub, replace id_rsa_work.pub with what you called yours.Now that our ssh key is copied to clipboard, go back to github account [Make sure you're logged in to work account if the ssh key you copied is id_rsa_work] and navigate toSettings - SSH and GPG Keys and click on New SSH key button (not New GPG key btw :D) give some title for this key, paste the key and click on Add SSH key. You've now either successfully added the ssh key or noticed it has been there all along which is fine (or you got an error because you selected New GPG key instead of New SSH key :D). Associate ssh key with gitHub account: Repeat the above step for your second account. Edit the global git configuration: Last step is to make sure the global configuration file is aware of all github accounts (so to say). Run git config --global --edit to edit this global file, if this opens vim and you don't know how to use it, press i to enter Insert mode, edit the file as below, and press esc followed by :wq to exit insert mode: [inside this square brackets give a name to the followed acc.] name = github_username email = github_emailaddress [any other name] name = github_username email = github_email [credential] helper = osxkeychain useHttpPath = true

完成了!现在，当尝试从一个回购中推或拉，你会被问到哪个GitHub账户应该与这个回购链接，它只被问到一次，本地配置将记住这个链接，而不是全局配置，所以你可以在不同的回购上工作，链接到不同的账户，而不必每次编辑全局配置。

导航到要将更改推到另一个GitHub帐户的目录。 在终端/命令行中创建一个新的SSH密钥。 ssh-keygen -t rsa -C " your-email-address " 下面将显示: 生成rsa公私钥对。 输入保存密钥的文件(/home/your_username/.ssh/id_rsa):

复制并粘贴路径，后面跟着一个可识别的文件名:

/home/your_username/.ssh/id_rsa_personal

4)然后它会问你以下问题:

Enter passphrase (empty for no passphrase):
Enter same passphrase again:

5)您现在可以输入以下命令查看您在本地机器上拥有的所有SSH密钥:

ls -al ~/.ssh

您应该能够看到新的SSH密钥文件。正如你可以看到在我的一个，我有id_rsa_test和id_rsa_personal.pub。

drwx------  2 gmadmin gmadmin 4096 Nov 16 22:20 .
drwxr-xr-x 42 gmadmin gmadmin 4096 Nov 16 21:03 ..
-rw-------  1 gmadmin gmadmin 1766 Nov 16 22:20 id_rsa_personal
-rw-r--r--  1 gmadmin gmadmin  414 Nov 16 22:20 id_rsa_personal.pub
-rw-r--r--  1 gmadmin gmadmin  444 Nov  6 11:32 known_hosts

6)接下来需要复制存储在id_rsa_personal中的SSH密钥。酒吧文件。您可以在您选择的文本编辑器中打开此文件。我目前正在使用atom，所以我使用以下命令打开文件:

atom ~/.ssh/id_rsa_personal.pub

然后你会得到类似这样的结果:

ssh-rsa AAB3HKJLKC1yc2EAAAADAQABAAAAQCgU5+ELtwsKkmcoeF3hNd7d6CjW+dWut83R/DC01E/YzLc5ZFri18doOwuQoeTPpmIRVDGuQQsZshjDrTkFy8rwKWMlXl7va5olnGICcpg4qydEtsW+MELDmayW1HHsi2xHMMGHlNv

7)复制并导航到您的GitHub帐户→设置→SSH和GPG密钥 8)单击“新建SSH密钥”。复制键，给它一个标题并添加它。 9)从终端添加密钥

ssh-add ~/.ssh/id_rsa_personal
Enter passphrase for /home/your_username/.ssh/id_rsa_personal: 

10)配置用户和密码。

git config --global user.name "gitusername"
git config --global user.email "gitemail"

11)我们已经做好了承诺和推进的准备。

git init
git add .
git commit 
git push

Go to ~/.ssh Create a file named config(have no extension ) Open config file & add below codes. (change according to your account) Account 1 # account_1 Host gitlab.com-account_1 HostName gitlab.com User git PreferredAuthentications publickey IdentityFile ~/.ssh/id_rsa_account_1 Account 2 # Account2 Host gitlab.com-Account2 HostName gitlab.com User git PreferredAuthentications publickey IdentityFile ~/.ssh/id_rsa_Account2 Account 3 # Account_3 Host github.com-Account3 HostName github.com User git PreferredAuthentications publickey IdentityFile ~/.ssh/id_rsa_Account_3 Add remote url as follows Account 1 git remote add origin git@gitlab.com-account_1:group_name/repo_name.git Account 2 git remote add origin git@gitlab.com-Account2:group_name/repo_name.git Account 3 git remote add origin github.com-Account3:github_username/repo_name.git

确保IdentityFile名称与您在ssh密钥生成过程中创建的名称相同。

可以有多种方法来做到这一点，但以下解决方案为我工作，非常简单。 我不是试图用SSH，我的步骤和解决方案是基于HTTPS。

Create your project DIR on your local machine. Example d:\test_git_multiple_account go to the folder "test_git_multiple_account" Add few files here into the DIR Open Git bash here and run following command a. git init // initialization b. git add , // add c. git commit -m "initial commit" you will get following output : in my case i use to add one python file created from code. **[master (root-commit) d4defd9] initial commit 2 files changed, 4 insertions(+) create mode 100644 .vscode/settings.json create mode 100644 Hello.py** d. git remote add origin <HTTPS repo link> e. git remote -v // check the repo version f. git push origin master it will ask your git hub user name and password via popup screen. you will get the following output Counting objects: 100% (5/5), done. Delta compression using up to 4 threads Compressing objects: 100% (3/3), done. Writing objects: 100% (5/5), 411 bytes | 31.00 KiB/s, done. Total 5 (delta 0), reused 0 (delta 0), pack-reused 0 remote: remote: Create a pull request for 'master' on GitHub by visiting: remote: https://github.com/vishvadeepaktripathi/Hello_Py/pull/new/master remote: To https://github.com/vishvadeepaktripathi/Hello_Py.git * [new branch] master -> master

这将创建一个名为master的新分支。 你可以提交到主分支一旦你改变了分支，在这种情况下，你现有的文件将被删除。所以我建议签入主分支到第一步，然后继续为每个命令，如果你想直接签入主分支。 在第一次登录时，它可能会给你一个错误消息，并再次要求登录名和密码，然后它会将您的更改发布到Git中心。

一旦这样做，你会得到消息到新的拉请求到你的github帐户。 您可以将您的更改从主分支合并到主分支。

我在这里创建了主分支，根据你的选择命名你的分支。 还要附加屏幕截图。 在这里输入图像描述

您应该也不应该使用一些常见凭证推送到项目。在新机器上启动后，按照以下步骤正确设置和使用gitlab凭证:

在计算机上创建公共/私有SSH密钥 复制粘贴公钥到gitlab/github UI界面(任何通过CMD行提示如何操作的人都可以获得免费啤酒…) 请确保您通过git而不是HTTP url克隆回购 设置git别名，以避免git命令经常输入相同的前缀 在git提交期间，总是使用author和e-mail标记 使用git正常你会这样做

这一切如下:

 # create the public / private key credentials on that specific machine
 ssh-keygen -t rsa -b 4096 -C "<<you>>@org.net" -f ~/.ssh/id_rsa.<<you>>.`hostname -s`

 # setup your public key in the gitlab ui 
 cat ~/.ssh/id_rsa.<<you>>.`hostname -s`

 # make sure you clone the repo via the git and not http url
 git clone git@git.in.org.net:org/some-repo.git

 # set the git alias to avoid constant typing of the repeating prefix to the git cmd
 alias git='GIT_SSH_COMMAND="ssh -i ~/.ssh/id_rsa.<<you>>.`hostname -s`" git'

 # during git commit ALWAYS use the author and e-mail flags
 git add --all ; git commit -nm "$git_msg" --author "YourFirstName YourLastName <you@phz.fi>"

 # use git as normal
 git fetch --all; git pull --all 

mishaba链接到http://net.tutsplus.com/tutorials/tools-and-tips/how-to-work-with-github-and-multiple-accounts/上的详细信息对我来说非常有用。

从那一页开始:

$ touch ~/.ssh/config

然后编辑该文件如下所示(每个帐户一个条目):

#Default GitHub
Host github.com
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa

Host github-COMPANY
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa_COMPANY