linux免密码SSH和SCP

生成密钥

ssh-keygen -t rsa

把公钥传到服务器

scp .ssh\id_rsa.pub ubuntu@139.199.72.xxx: ubuntu

写入到认证文件

cat id_rsa.pub >> .ssh/authorized_keys

PS:注意权限问题,权限也有可能致使要输入密码

chmod 700 /home/you_name/.ssh 
chmod 600 /home/you_name/.ssh/authorized_keys​​​​​​​