В комманде вы указываете или путь к зарегистрированному классу, или его алиас. Аласы есть не для всех классов. Список достпных алиасов можно получить по команде: wmic /?. Остальные пути (path) можно узнать, скачав и запустив утилиту WMI Explorer:

Вы можете написать как полный путь wmic path Win32_computersystem get model, так и используя alias wmic computersystem get model, эти записи равноценны.

На языке WQL запрос будет выглядеть так:

SELECT * FROM Win32_ComputerSystem WHERE Name=’pc_name’

При написании скриптов на Powershell следует использовать команделт Get-WmiObject:

$computer = $env:COMPUTERNAME $namespace = «ROOT\cimv2» $classname = «Win32_ComputerSystem» Write-Output «=====================================» Write-Output «COMPUTER : $computer » Write-Output «CLASS : $classname » Write-Output «=====================================» Get-WmiObject -Class $classname -ComputerName $computer -Namespace $namespace | Select-Object * -ExcludeProperty PSComputerName, Scope, Path, Options, ClassPath, Properties, SystemProperties, Qualifiers, Site, Container | Format-List -Property [a-z]*

Вы можете писать и более сложные запросы, используя условие Where:

WMIC Path Win32_NetworkAdapter Where ( Manufacturer = «Realtek» And PhysicalAdapter = TRUE ) Get .

Вы можете вывести не одно, а несколько значений свойств сразу. Тогда они будут выводиться в виде таблицы со столбцами:

System Information. Computer Name Свойство

Определение

Возвращает имя NetBIOS локального компьютера. Gets the NetBIOS computer name of the local computer.

Значение свойства

Имя этого компьютера. The name of this computer.

Примеры

В следующем примере кода перечисляются все свойства SystemInformation класса в ListBox и отображается текущее значение свойства в, TextBox когда выбран элемент списка. The following code example lists all properties of the SystemInformation class in a ListBox and displays the current value of the property in a TextBox when a list item selected.

Комментарии

ComputerNameСвойство получает NetBIOS-имя локального компьютера. The ComputerName property retrieves the NetBIOS name of the local computer. Это достигается при вызове встроенной функции системной информации GetComputerName. This is accomplished with a call into the native System Information function GetComputerName. Это имя устанавливается при запуске системы, когда система считывает его из реестра. This name is established at system startup, when the system reads it from the registry. Если локальный компьютер является узлом кластера, ComputerName возвращает имя виртуального сервера кластера. If the local computer is a node in a cluster, ComputerName returns the name of the cluster virtual server.

С помощью метода можно ComputerName определить имя компьютера, который отображается для других пользователей в сети. You can use the ComputerName method to determine the name of the computer that is displayed to other users on a network.

GetComputerNameA function (winbase.h)

Retrieves the NetBIOS name of the local computer. This name is established at system startup, when the system reads it from the registry.

GetComputerName retrieves only the NetBIOS name of the local computer. To retrieve the DNS host name, DNS domain name, or the fully qualified DNS name, call the GetComputerNameEx function. Additional information is provided by the IADsADSystemInfo interface.

The behavior of this function can be affected if the local computer is a node in a cluster. For more information, see ResUtilGetEnvironmentWithNetName and UseNetworkName.

Syntax

Parameters

A pointer to a buffer that receives the computer name or the cluster virtual server name. The buffer size should be large enough to contain MAX_COMPUTERNAME_LENGTH + 1 characters.

On input, specifies the size of the buffer, in TCHARs. On output, the number of TCHARs copied to the destination buffer, not including the terminating null character.

If the buffer is too small, the function fails and GetLastError returns ERROR_BUFFER_OVERFLOW. The lpnSize parameter specifies the size of the buffer required, including the terminating null character.

Return value

If the function succeeds, the return value is a nonzero value.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The GetComputerName function retrieves the NetBIOS name established at system startup. Name changes made by the SetComputerName or SetComputerNameEx functions do not take effect until the user restarts the computer.

If the caller is running under a client session, this function returns the server name. To retrieve the client name, use the WTSQuerySessionInformation function.

Examples

The winbase.h header defines GetComputerName as an alias which automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

How can I get the active user name in a SYSTEM process using C++?

I have used GetUserName() METHOD , but the username it returned is ‘SYSTEM’ in a SYSTEM process.How can I get the active username in a SYSTEM process? THIS IS MY CODE:

5 Answers 5

You need to enumerate through all the running processes using EnumProcesses

Then see this answer to get the username from the process:

If you want to know who is logged onto the physical console, you can call WTSGetActiveConsoleSessionId to get the terminal services (aka «fast user switching» aka «remote desktop») session ID that is currently active.

You can then call WTSQuerySessionInformation with WTSUserName to get the username.

(If the user you’re interested in might be logged on via Remote Desktop, this approach will not work.)

The approach below will work for both physical console and virtual (remote desktop) console sessions.

Enumerating all processes is a way to do it, regardless of whether user is on the physical console or logged in via remote session, but it has certain issues:

1) You can’t enumerate both x86 and x64 processes in the same service process using documented Windows APIs. An x86 service can only enumerate x86 processes and an x64 service can only enumerate x64 processes. A way to circumvent that is to have an x86 service launch an x64 helper process (and vice versa) to do the rest of the enumeration task.

2) The only process that is always present for a logged on user across different Windows versions (e.g. Vista to Windows 10) is explorer.exe however that process is x64 on x64 OS platforms and x32 on x32 OS platforms and its presence does not mean that the user is actively logged in.

A better way is to enumerate sessions, find the active interactive session or sessions that is also connected and then get the user name of that session.

The code below does much more than that, including impersonation of that user and running a process as that user all from a windows service, but if you are just interested in the user name please look for the second instance the WTSQuerySessionInformation() function is called.