运行git push时出错，提示Permission denied (publickey)

错误：  在终端（terminal）下

                      执行git clone [email protected]:accountName/repository.git命令时不出错，

                      运行git push时出错，提示如下

                      Permission denied(publickey).

                      fatal: Could not read from remote repository.

                      Please make sure you have the correct access rights and the repository exists.

 

    原因：  可能是没有与github上的账号成功建立密钥对。

 

    解决：  

                  【1】ssh-keygen -t rsa -C "[email protected]"

                            注意，上述[email protected]是指github账户的注册邮箱

                  【2】ssh -v [email protected]

                            上述命令执行后，出现的提示最后两句是

                                  No more authentication methods to try.

                                  Permission denied (publickey).

                  【3】ssh-agent  -s

                            上述命令执行后，出现的提示最后两句是

                                  SSH_AUTH_SOCK=/tmp/ssh-GTpABX1a05qH/agent.404; export SSH_AUTH_SOCK;

                                  SSH_AGENT_PID=13144; export SSH_AGENT_PID;

                                  echo Agent pid 13144;

                  【4】ssh-add ~/.ssh/id_rsa   

                            上述命令执行后，出现提示 

                                  Identity added: . . . (这里是一些ssh key 文件路径)

                                  Could not open a connection to your authentication agent.

                  【5】若【4】中出现上述提示，则执行此步骤，否则执行【6】

                           eval `ssh-agent  -s`       回车

                           ssh-add ~/.ssh/id_rsa        回车

                  【6】cat  ~/.ssh/id_rsa.pub   (也可以用其他方式打开)   

                            上述命令执行后id_rsa.pub文件内容将输出到终端，复制里面的密钥（内容一般是以ssh-rsa 开头，以github账号的注册邮箱结尾的，全部复制下来）

                  【7】进入github账号，在settings下，选SSH and GPG keys, 点击new SSH key

图1. 添加密钥

 

                           点击new SSH key后，在title栏里自定义名字，然后将上一步复制的密钥（以ssh-rsa 开头，以github账号的注册邮箱结尾的）粘贴到此处。

                           然后点击Add SSH Key

                  【8】ssh -T [email protected]      回车

                            提示： Hi ---! You've successfully authenticated, but GitHub does not provide shell access.