Mac restart ssh3/27/2023 Which should be more graceful than the direct Once you’re connected by ssh to a sick Mac, the choices continue too: if you can, restart it using That is extremely simple to do, and will be available when you next want to connect. If you’re going to do this much, it’s worth setting up an easy connection using the New Remote Connection… command in Terminal’s Shell menu. Try a couple of commands like ls to confirm that everything is good, and then type You’re then prompted for that user’s password on the remote system, and you’re in and running as that user at the top level of the Home folder. The first time that you do this, ssh will obtain and save the remote system’s fingerprint, so you’ll need to type yes to its request to continue the connection. Ssh you give your username on the Mac which you’re connecting to, and its IP address. This is where it’s handy to have configured its Network settings using a fixed IP address, as you will already know what to use. Next, I check that ssh is working correctly by typing in the basic command to connect to that Mac from another system. Whilst you’re about those, if you have any doubts about the resilience of your firewall to block all incoming connections, or suspect that your password could usefully be stronger, now is the time to do something about them, before you enable sharing services which could otherwise be the jackpot for an intruder. I also enable Remote Management, and restrict these services to myself, as the admin user. One of the first things that I normally do when I get a Mac is to switch this on and configure it, in the Sharing pane. There’s one crucial step you must take before you can make ssh or anything based on it happen: you have to enable it on the target Mac, the one that you’re going to connect to. Prior to High Sierra, you could use plain old telnet, but ssh is far better, and 10.13 has done away with both telnet and the insecure ftp tool for transferring files. It may seem daunting at first, but this is one of the best practical uses of the command line for regular users who see no good reason to go near it otherwise. The way to do this is using the secure shell, ssh, in Terminal. Because this command-based control doesn’t rely on the great majority of macOS running properly – it has no GUI, for instance – you can often do this successfully even when that Mac appears to be frozen and unresponsive. For client systems this is valuable for servers it is often essential. You can then try restarting key systems, copying files off in case they get blown away during the restart, and so on. It’s much smarter to connect to the sick Mac from another Mac, or indeed another computer, and take control remotely. Although that’s normally reliable, it’s quite a blunt instrument and doesn’t give you any options as to what happens before your Mac restarts or shuts down. If that doesn’t help, and your Mac appears to have frozen, most users head for the Power button next. If your Bluetooth mouse/trackpad isn’t playing, you can connect it using its charging lead and see if it works over USB. You will normally reach for the Restart… command in the Apple menu. When your Mac gets into trouble, the fact that it has multiple options for restarting or shutting down is important. One well-established method of building fault-tolerant systems is to provide several alternative ways of doing things.
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