<p>问题描述：</p><p>执行</p><p>git push origin master</p><p>提示 ：</p><p>Permission denied (publickey).</p><p>fatal: Could not read from remote respository.</p><p>查到资料http://stackoverflow.com/questions/19660744/git-push-permission-denied-public-key，按照Eric Leschinski的步骤往下走。但是有依旧报错。究其原因，是最后两步cat ~/.ssh/id_rsa.pub和ssh -T git@github.com没有生效。</p><p>解决办法：</p><p>1，将连接方式从http更换为ssh。注意，github.com后面一定有(冒号):</p><p>git remote rm origin</p><p>git remote add origingit@github.com:username/respository.git</p><p>2，生成新的ssh key。这里会提示要不要rewrite，键入y，还有提示输入passPhrase，输入空格即可。</p><p>cd ~/.ssh</p><p>ssh-keygen </p><p>3，测试一下连接。</p><p>ssh -T -v git@github.com</p><p>不出意外的话这里会报错，最后几行提示信息如下：</p><p>debug1: Offering RSA public key: yourpath/.ssh/id_rsa</p><p>debug1: Authentications that can continue: publickey</p><p>debug1: Trying private key:yourpath/.ssh/id_dsa</p><p>debug1: Trying private key:yourpath/.ssh/id_ecdsa</p><p>debug1: Trying private key:yourpath/.ssh/id_ed25519</p><p>debug1: No more authentication methods to try.</p><p>Permission denied (publickey).</p><p>提示信息表明路径 yourpath/.ssh下id_rsa文件存在，并且提供public key，然而无法和网站中的ssh-key匹配上。于是程序转而寻找yourpath/.ssh路径下的id_dsa文件，id_ecdsa文件，id_ed25519文件，看它们是不是能提供新的public key。</p><p>查看一下yourpath/.ssh，会发现下面根本不存在id_dsa，id_ecdsa，id_ed25519文件。 出错的原因其实在于步骤4更新了本地的ssh key，然而网站上的ssh key还为旧值，所以匹配不上，就报错Permission denied (publickey)</p><p>4，打开yourpath/.ssh/id_rsa.pub（.pub为公钥文件，id_rsa为私钥文件），复制里面的内容。</p><p>5，打开https://github.com/settings/profile，在SSH key那栏选择New SSH Key，并将复制内容拷贝到其中，选择保存。</p><p>6，再次测试$ ssh -T git@github.com，提示</p><p>You've successfully authenticated, but GitHub does not provide shell access.</p>