Set single SSH key & multi-SSH keys for GitHub

GitHubSSHkeys.md

Set single SSH key & multi-SSH keys for GitHub

Date : 2017/08/30.

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Steps

1. Create GitHub account.
2. Generate SSH key.

   ssh-keygen -t rsa -b 4096 -C "name@xxx.com" -f github

3. Look and copy SSH public key.

   cat ~/.ssh/github.pub

4. Import SSH public key on GitHub.
   1. copy the public key(plain text)
   2. paste the public key on Github settings page.
5. Checking SSH connection.

   # base syntax
   ssh -T user@hostname
   # example
   ssh -T git@github.com
   # self-defined host name
   ssh -T git@github.com-hello

   If connection is ok, you can see Hi (your name)! You've successfully authenticated, but GitHub does not provide shell access.
6. If you need to set multi SSH keys, you can try to add config file.

   touch ~/.ssh/config
   vi ~/.ssh/config

   And then you can add below configure into the config file.

   Host git@github.com-hello
   HostName github.com
   User git
   IdentityFile ~/.ssh/github

Reference

1. GitHub設定指引
2. SSH Keys for GitHub
3. 多重 SSH Keys 與 Github 帳號