mac 生成 ssh key

一、检查当前mac是否已存在ssh key

输入以下命令：

ls -al ~/.ssh

二、命令生成 ssh key

ssh-keygen -t rsa -C "you_email@.com(你的邮箱，用于gitlab的邮箱)"

后面的提示直接敲回车，一路完成，使用默认值即可，因为这个Key仅仅用于简单的服务，所以也无需设置密码。

Enter passphrase (empty for no passphrase): 
Enter same passphrase again: 
Your identification has been saved in /Users/你的电脑用户名/.ssh/id_rsa.
Your public key has been saved in /Users/你的电脑用户名/.ssh/id_rsa.pub.
The key fingerprint is:
SHA256:******************************** 邮箱

如果服务器端需要公钥, 直接把.ssh目录下的id_rsa.pub配置即可,id_rsa为私钥要保密

打开 id_rsa.pub
cat ~/.ssh/id_rsa.pub