Use a username with admin privileges.

You will need the samba-common package installed for Ubuntu.

• sudo apt-get install samba-common

net rpc shutdown -r -f -I xxx.xxx.xxx.xxx -U username

Reboot the local machine now:

shutdown -r -t 0

Shutdown now showing a dialog box with a timer (in seconds):

shutdown -s -t 60

With a timer and a message:

shutdown -s -t 120 -c "Please save your work immediately because the server is being rebooted!"

Shutdown another computer in your domain:

shutdown -s -m \\computername -t 10

Cancel a shutdown:

shutdown -a

Download and extract the PsTools package from SysInternals (now Microsoft). We extract the zip archive into C:\Support\PsTools\ as a convention.

Use the 'at' command to schedule a one-off reboot:

at 2:00am c:\support\pstools\psshutdown.exe -r -f -c -t 10

or shutdown:

at 2:00am c:\support\pstools\psshutdown.exe -s -f -c -t 10

Where:

-s: Shutdown windows server
-r: Reboot windows server
-f: Forces all running application to exit
-c: Allow the shutdown to be canceled user
-t: Specifies the countdown in seconds until the shutdown

http://www.itbox4vn.com/2011/05/how-to-schedule-windows-server-20032008.html

http://www.wegotserved.com/2011/11/04/set-automatic-scheduled-reboots-windows-home-server-2011/

Task Scheduler → Action → Create Task → General

1. Name the task Scheduled Reboot
2. Use the SYSTEM user account
3. Select Run with highest privileges
4. Configure for Windows 2008 R2

Task Scheduler → Action → Create Task → Triggers

1. On a schedule
2. One time

We add two actions, one to warn users and the other to reboot the server.

Task Scheduler → Action → Create Task → Actions

1. Set the Action to Start a program
2. Set the Program to C:\Windows\System32\msg.exe
3. Set the Arguments to * “Please log out now. This server is rebooting in 5 minutes!”

Task Scheduler → Action → Create Task → Actions

1. Set the Action to Start a program
2. Set the Program to C:\Windows\System32\shutdown.exe
3. Set the Arguments to /r /f /t 300 /c “Scheduled Reboot” /d p:4:1
4. Set Start in to c:\windows\system32
5. Set the Comments to Reboot in 5 minutes with reason as 'Application: Maintenance (Planned)'

Task Scheduler → Action → Create Task → General

1. Name the task Scheduled Reboot
2. Use the SYSTEM user account
3. Select Run with highest privileges
4. Configure for Windows 2012 R2

Task Scheduler → Action → Create Task → Triggers

1. New
2. On a schedule
3. One time
4. Set the date and time of the desired reboot
5. Stop task if it runs longer than 30 minutes
6. OK

We add two actions, one to warn users and the other to reboot the server.

Task Scheduler → Action → Create Task → Actions

1. New
2. Set the Action to Start a program
3. Set the Program to C:\Windows\System32\msg.exe
4. Set the Arguments to * “Please log out now. This server is rebooting in 5 minutes!”
5. OK

Task Scheduler → Action → Create Task → Actions

1. New
2. Set the Action to Start a program
3. Set the Program to C:\Windows\System32\shutdown.exe
4. Set the Arguments to /r /f /t 300 /c “Scheduled Reboot” /d p:4:1
5. Set Start in to c:\windows\system32
6. OK

You can easily export saved tasks to be imported to other machines.