ssh-copy-id使用方法

1.默认端口是22的情况下

ssh-copy-id -i ~/.ssh/id_rsa.pub user@server

2.端口为xxx

ssh-copy-id -i ~/.ssh/id_rsa.pub -p xxx user@server

如果在.ssh目录下，可以省略~/.ssh/id_rsa.pub

下面这条命令也可以实现相同的效果

cat ~/.ssh/id_rsa.pub | ssh user@server "cat - >> ~/.ssh/authorized_keys"

如果端口不是22就是下面的命令

cat
~/.ssh/id_rsa.pub | ssh user@server -p xxxx
"cat - >> ~/.ssh/authorized_keys"