Restart the computer you are logged on to immediately, forcing all applications to close: shutdown.exe /r /t 0 /f
The same for a remote computer: shutdown.exe /r /t 0 /f /m \<computer>
Add someone to the local Administrators groups: net localgroup Administrators /add <user or group>
Enable Remote Desktop on a remote system: reg add “\<computername>HKLMSYSTEMCurrentControlSetControlTerminal Server” /v fDenyTSConnections /d 0 /t REG_DWORD /f
Schedule a reboot of the system you are logged on to (works on Windows Server 2003): schtasks.exe /Create /RU “NT AUTHORITYSYSTEM” /SC ONCE /TN “Restart” /TR “%systemroot%system32shutdown.exe /r /t 0 /f” /ST 22:00 /Z
Schedule a reboot of the system you are logged on to (works on Windows Server 2008 and later): schtasks.exe /create /TN “Restart” /SC Once /ST 23:00 /TR “%windir%system32shutdown.exe /r /t 0 /f” /RU “SYSTEM”