powershell get uptime remote computer

To get the uptime of a remote computer using PowerShell in C++, you can follow these steps:

  1. Import the necessary headers:
  2. #include <iostream>: This header provides the input/output stream functionality.

  3. #include <windows.h>: This header provides functions and macros for Windows API.

  4. Declare the function prototype:

  5. BOOL WINAPI GetSystemTimePreciseAsFileTime(LPFILETIME lpSystemTimeAsFileTime);: This is the function prototype for getting the current system time as a precise file time.

  6. Define the main function:

  7. int main(): This is the entry point of the program.

  8. Declare the variables:

  9. HANDLE hToken;: This variable is used to store the access token handle.
  10. BOOL bResult;: This variable is used to store the result of the function call.
  11. LUID luid;: This variable is used to store the locally unique identifier.
  12. TOKEN_PRIVILEGES tp;: This variable is used to store the token privileges.
  13. LARGE_INTEGER li;: This variable is used to store the large integer value.

  14. ULONGLONG ullUptime;: This variable is used to store the uptime value.

  15. Open the access token:

  16. bResult = OpenProcessToken(GetCurrentProcess(), TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken);: This function is used to open the access token of the current process.

  17. Lookup privilege value:

  18. bResult = LookupPrivilegeValue(NULL, SE_SYSTEMTIME_NAME, &luid);: This function is used to look up the privilege value associated with the specified privilege name.

  19. Set privileges:

  20. tp.PrivilegeCount = 1;: This line sets the number of privileges to 1.
  21. tp.Privileges[0].Luid = luid;: This line sets the locally unique identifier of the privilege.
  22. tp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;: This line sets the privilege attributes.

  23. bResult = AdjustTokenPrivileges(hToken, FALSE, &tp, sizeof(TOKEN_PRIVILEGES), (PTOKEN_PRIVILEGES)NULL, (PDWORD)NULL);: This function is used to enable or disable privileges in an access token.

  24. Get system time:

  25. GetSystemTimePreciseAsFileTime((LPFILETIME)&li);: This function is used to retrieve the current system time as a precise file time.

  26. Calculate uptime:

  27. ullUptime = GetTickCount64() / 1000;: This line calculates the uptime in seconds using the GetTickCount64() function.

  28. Print the uptime:

    • std::cout << "Uptime: " << ullUptime << " seconds";: This line prints the uptime value in seconds.

Note: Make sure to link the necessary libraries when compiling the C++ code, such as Kernel32.lib for Windows API functions.