在软件开发过程中，我们经常需要将源代码上传到代码托管平台，如GitHub、GitLab等，这些平台可以帮助我们管理代码版本，方便团队协作，本文将介绍如何使用Git工具上传源码到GitHub。

1. 安装Git

我们需要在本地计算机上安装Git，访问Git官网（https://gitscm.com/）下载适合自己操作系统的安装包，按照提示进行安装即可。

2. 创建SSH密钥

为了让GitHub识别你的身份，你需要创建一个SSH密钥，打开命令行，输入以下命令：

sshkeygen t rsa b 4096 C "your_email@example.com"

按照提示操作，密钥会生成在你电脑的用户目录下的.ssh文件夹中，默认情况下，公钥文件名为id_rsa.pub，私钥文件名为id_rsa。

3. 添加SSH密钥到GitHub

登录GitHub账号，点击右上角的头像，选择“Settings”，在左侧菜单栏中选择“SSH and GPG keys”，然后点击“New SSH key”，将刚才生成的公钥内容复制粘贴到“Key”文本框中，给密钥起一个名字，最后点击“Add SSH key”。

4. 克隆远程仓库

现在，你可以开始克隆远程仓库了，在GitHub上找到你想要克隆的项目，点击项目右上角的绿色按钮“Code”，选择“Clone with SSH”，将地址复制到本地命令行，执行以下命令：

git clone git@github.com:username/repository.git

username是GitHub用户名，repository是仓库名，这将会在本地生成一个与远程仓库同名的文件夹。

5. 添加和提交代码

进入项目文件夹，使用文本编辑器或IDE编辑代码，修改完成后，使用以下命令将修改添加到暂存区：

git add .

或者指定某个文件：

git add file_name

提交修改：

git commit m "commit message"

将修改推送到远程仓库：

git push origin master

至此，你已经成功将源码上传到GitHub了，接下来，你可以邀请团队成员加入项目，共同协作开发。

常见问题解答

Q1：为什么无法将代码推送到远程仓库？

A1：请检查以下几点：

1、确保已经安装了Git并正确配置了SSH密钥；

2、确保已经将SSH密钥添加到GitHub账户；

3、确保本地分支与远程分支同步；

4、如果使用的是HTTPS方式克隆仓库，请确保已经将SSH密钥添加到GitHub账户的SSH和GPG keys中。

Q2：如何查看本地分支与远程分支的关系？

A2：在命令行中输入以下命令：

git status uno b porcelain | grep e 'ahead' e 'behind' e 'diverged' e 'no branch' e 'no tracking branch' e 'up to date' e 'fast forward' e 'merge' e 'rebase' e 'stash' e 'working tree clean' e 'Your branch is up to date with ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e 'Your branch is behind ' e 'Your branch is ahead of ' e