解决Agent admitted failure to sign using the key的方法

这两天没事瞎折腾ruby的heroku，把~/.ssh/id_rsa搞乱了，结果直接导致我在github上的项目没法管理了！对于刚接触git不久的我来说算是遇到一个不大不小的麻烦了！

$git push origin master 
Agent admitted failure to sign using the key.
Permission denied (publickey).
fatal: Could not read from remote repository.

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

解决方法

$ssh-add
Identity added: /home/user/.ssh/id_rsa (/home/user/.ssh/id_rsa)