![]() Rather, it will invoke the reboot(2) system call (used for reboot, poweroff & halt) to power off the computer instantly. You can customize this command a little further. This will shut down your Mac as soon as you hit the enter button in Terminal to execute it. Now what if you want to shut down forcefully, i.e., you don't want to wait for processes to close normally? In that case you can use: sudo poweroff -f Use the shutdown command in Terminal on Mac Shutdown immediately. The command sudo init 0 will take you to the runlevel 0 ( shutdown). sudo poweroff and sudo halt -p are exactly like sudo shutdown -P now. The poweroff and halt commands basically invoke shutdown (except for the poweroff -f). Normally shutting down a linux machine from command line requires a root user access and of obviously we don’t want to give our Home Assistant full root access in case of e.g. You should also know the IP and MAC addresses of your Remote PC. To summarize, here are the commands available to poweroff ( not halt) a computer: sudo shutdown -h now The shut down procedure is a bit more complicated than the start up. That is one of the most simple uses of pmset, which is a full featured power management utility. Hit return and the Mac is instantly put to sleep. The first trick uses pmset and the following command syntax: pmset sleepnow. Remember there is no warning, sleep is immediate. If you want to shut down the target computer type '/s' one space after the computer name. To try this yourself, launch Terminal and use one of the following commands. Type /s or /r one space after the computer name. Replace ' computername ' with the actual name of the target computer. To be sure of that, you can use the -P switch with shutdown to poweroff the computer. Type this one space after 'shutdown' on the same line. The -h switch of shutdown will either halt or poweroff the computer, the decision will be taken by the system although in Ubuntu I have seen that it would normally poweroff the machine. One thing to note here is that halt will close all the processes, turn off the CPUs and return the control to a ROM monitor of the mainboard needing the user to press the power button to get the power supply turned off, whereas poweroff after turning off the CPUs will simply turn off the power supply resulting in a proper shutdown. To get what you want, i.e., to shut down the computer properly, you need to give the -h switch to shutdown. Hibernate: (if enabled on your system) /usr/bin/dbus-send -system -print-reply -dest="" /org/freedesktop/UPower, the command sudo shutdown now will take you to the runlevel 1 (recovery mode) this will happen for both Upstart and SysV init. Suspend: /usr/bin/dbus-send -system -print-reply -dest="" /org/freedesktop/UPower Restart: /usr/bin/dbus-send -system -print-reply -dest="" /org/freedesktop/ConsoleKit/Manager .Restart Shutdown: /usr/bin/dbus-send -system -print-reply -dest="" /org/freedesktop/ConsoleKit/Manager .Stop Since hibernate is normally disabled by default in Ubuntu systems, you can enable this by checking this answer. This will report back ‘assessments disabled’ to indicate that Gatekeeper has been. Since youd want to restart, heres the way to open it from the command line: open -a Docker. If you feel like confirming this, you can do so with the status flag and the same command, like so: spctl -status. Specifically for Docker for Mac, because its a 'GUI' app, theres a workaround: osascript -e quit app 'Docker'. This is due to Ubuntu's shift in using systemd instead of Upstart systemctl poweroff Hit return and enter the admin password as usually required by sudo, and Gatekeeper will instantly be disabled. Hate passwords ( sudo) and love one-liners? For Ubuntu 15.04 and later
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