GitHub 多账户 SSH 配置指南

# 进入SSH配置目录
cd ~/.ssh
# 查看目录内容（示例输出）
ls
config      id_rsa_account1.pub      id_rsa_account2.pub
id_rsa_account1  id_rsa_account2      known_hosts

# 为account1生成密钥
ssh-keygen -t rsa -b 4096 -C "account1@example.com"
# 文件名: id_rsa_account1
# 为account2生成密钥
ssh-keygen -t rsa -b 4096 -C "account2@example.com"
# 文件名: id_rsa_account2

nano ~/.ssh/config

# account1配置（默认）
Host github.com-account1
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa_account1
# account2配置
Host github.com-account2
  HostName github.com
  User git
  IdentityFile ~/.ssh/id_rsa_account2

# 显示account1的公钥（复制此内容）
cat ~/.ssh/id_rsa_account1.pub
# 显示account2的公钥（复制此内容）
cat ~/.ssh/id_rsa_account2.pub

# 测试account1连接
ssh -T git@github.com-account1
# 预期输出: Hi account1! ...
# 测试account2连接
ssh -T git@github.com-account2
# 预期输出: Hi account2! ...

# 设置全局默认用户为account1
git config --global user.name "Account One"
git config --global user.email "account1@example.com"

# 创建account1工作区
mkdir -p ~/workspace/account1
cd ~/workspace/account1
# 创建account2工作区
mkdir -p ~/workspace/account2
cd ~/workspace/account2

# 使用account1克隆（默认）
git clone git@github.com-account1:account1/repo1.git
# 使用account2克隆（显式指定）
git clone git@github.com-account2:account2/repo2.git

# 进入account2的仓库
cd ~/workspace/account2/repo2
# 设置仓库级用户信息（覆盖全局配置）
git config user.name "Account Two"
git config user.email "account2@example.com"
# 验证配置
git config user.name     # 输出: Account Two
git config user.email    # 输出: account2@example.com

# 在account1工作区提交
cd ~/workspace/account1/repo1
touch test1.txt
git add .
git commit -m "Test by Account One"
git push origin master
# 在account2工作区提交
cd ~/workspace/account2/repo2
touch test2.txt
git add .
git commit -m "Test by Account Two"
git push origin master