解决使用Git遇到的：Enter passphrase for key '/Users/zhangxiaoxue/.ssh/id_rsa'问题

创建SSH Key

ssh-keygen -t rsa -C "youremail@example.com"

在生成SSH Key时，如果不小心设置了passphrase，使用SSH协议克隆远程仓库时，在每次git pull和git push时都会提示Enter passphrase for key '/Users/zhangxiaoxue/.ssh/id_rsa'，每次都要手动输入密码才能继续操作，可以在命令行输入sh-keygen -p进行重新设置，直接回车输入为空，就没有密码了。

zhangxiaoxue@MacBook-Pro learn-git % ssh-keygen -p
Enter file in which the key is (/Users/zhangxiaoxue/.ssh/id_rsa): 
Enter old passphrase: 
Key has comment 'sybil3904@163.com'
Enter new passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved with the new passphrase.