使用 ssh 制作应用程序以关闭 macbook

Question

I have been trying to create an app that can shutdown my mac using ssh. I've tried ssh-copy-id -i ~/.ssh./id_rsa.pub ssh "my computer" | sudo shutdown -h now ssh-copy-id -i ~/.ssh./id_rsa.pub ssh "my computer" | sudo shutdown -h now but I get an error message saying zsh:exit 1 and zsh: suspended (tty output) sudo shutdown -h now and I don't know what to do.

Answer 1

There are several issues with your command:

ssh-copy-id -i ~/.ssh./id_rsa.pub ssh "my computer" | sudo shutdown -h now

1. That's two commands without any separation. You need a semicolon or a line break between them.
2. ssh-copy-id needs the private key, but you've provided the public key
3. That key looks like it has an extra dot in the key path
4. You're running sudo shutdown -h now locally rather than remotely

Run this just one time. It will prompt you for your user's password on mycomputer :

ssh-copy-id -i ~/.ssh/id_rsa mycomputer

Then you can run this:

ssh -t mycomputer "sudo shutdown -h now"

This will be interactive since you need to enter your user password for sudo , but at least the key prevents you from needing to enter it a second time to gain access to the system.

You could reduce this by allowing your user to run that command without a password. From a shell on that computer ( ssh mycomputer ), run visudo (if the last line of that file looks like @includedir /etc/sudoers.d , quit and run something like visudo -f /etc/sudoers.d/local ) and add this to the end:

gjwlsdnd224  ALL=(root) NOPASSWD: /sbin/shutdown -h now

where gjwlsdnd224 is your username. If you do this, you don't need -t passed to ssh .