Git notify permission denies when pushing

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When wer are using git push, and got:

git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

There are two causes reasones:

1. Haven't set up git
2. Haven't set up SSH connection

Setting up Git

Method One：

Using git config to config Git

$ git config --global user.name "Username"
$ git config --global user.email email@example.com

These two commands are used for config user name and email information. --global represents it is a global configuration.

Method Two：

You can use editor to config Git

1. If you want to config git globally，open /etc/gitconfig，and add:

[user]
    name = Username
    email = YourEmail

2. If you only want to change one user's setting, just edit~/.gitconfig.

If you want to know more about git, please check Git Official Website (opens new window)。

Setting up GitHub SSH connection

1. You need to generate a SSH key. Open terminal and type:

$ ssh-keygen -t rsa -C "YourEmail"

You can use all settings as default.

1. After that, you could get a SSH public key and private key。（Default under:~/.ssh/. Then，copy fileid_rsa.pub that is under that folder.
2. Click GitHub avatar，click "Settings"
3. On the side bar，click “SSH and GPG keys” -> "Add SSH key"
4. Paste the public key file and save。

笔记

If it's still not working, or it's not working after reboot. Run ssh-add [private_key_file_path]. If you got error Could not open a connection to your authentication agent., please check this article (opens new window).

Environment：

                 -/+:.          
                :++++.          OS: 64bit Mac OS X 10.14.5 18F132
               /+++/.           Kernel: x86_64 Darwin 18.6.0
       .:-::- .+/:-``.::-       Uptime: 3d 16h 35m
    .:/++++++/::::/++++++/:`    Packages: 48
  .:///////////////////////:`   Shell: zsh 5.6.2
  ////////////////////////`     Resolution: 2880x1800
 -+++++++++++++++++++++++`      DE: Aqua
 /++++++++++++++++++++++/       WM: Quartz Compositor
 /sssssssssssssssssssssss.      WM Theme: Blue
 :ssssssssssssssssssssssss-     CPU: Intel Core i7-4770HQ @ 2.20GHz
  osssssssssssssssssssssssso/`  GPU: Intel Iris Pro
  `syyyyyyyyyyyyyyyyyyyyyyyy+`  RAM: 8462MiB / 16384MiB
   `ossssssssssssssssssssss/
     :ooooooooooooooooooo+.
      `:+oo+/:-..-:/+o+/-

Reference： - [GitHub Guide](https://help.github.com/en/enterprise/2.15/user/articles/adding-a-new-ssh-key-to-your-github-account)

• CSDN (opens new window)

• Git (opens new window)