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WMI to see result of remote command

Posted on 2008-06-10
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Last Modified: 2013-12-17
I am trying to use WMI to execute a command on a remote computer (which I found out how to do), but what I need now is to see the actual result of the command. For example, if I run the ipconfig command I would like to see the result come back to my remote station. Is there any way to do this?
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Question by:invisiblekhaos2
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8 Comments
 
LVL 41

Expert Comment

by:graye
ID: 21752865
No, not really....

You *could* redirect the output of the command into a local text file, wait a few miliseconds for the file to close, and then read the contents of the file.
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Author Comment

by:invisiblekhaos2
ID: 21753056
When I try that I get an unrecognized or incomplete command error...
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LVL 41

Expert Comment

by:graye
ID: 21755666
Since the redirection actually uses the Command Shell, you'd have to modify your command to look like this:

        wmi = New ManagementClass("\\" & PC & "\root\cimv2:Win32_Process")
        wmi_in = wmi.GetMethodParameters("Create")
        wmi_in("CommandLine") = "cmd /c C:\SomeCommand.exe > C:\Temp\Output.txt"
        wmi_out = wmi.InvokeMethod("Create", wmi_in, Nothing)
        ret = Convert.ToInt32(wmi_out("returnValue"))
        If ret <> 0 Then
            Throw New ApplicationException("Create method error " & ret)
        End If
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Author Comment

by:invisiblekhaos2
ID: 21803002
None of these answers worked... I found out a solution that works for me...
0
 

Author Comment

by:invisiblekhaos2
ID: 21816113

public String ExecuteRemoteCommands(String computerName, String command)
        {
            String line = null;
            String result = null;
            ConnectionOptions connOptions = new ConnectionOptions();
            ObjectGetOptions objectGetOptions = new ObjectGetOptions();
            ManagementPath managementPath = new ManagementPath("Win32_Process");
            connOptions.Impersonation = ImpersonationLevel.Impersonate;
            connOptions.EnablePrivileges = true;
            try
            {
                ManagementScope manScope = new ManagementScope(String.Format(@"\\{0}\ROOT\CIMV2", computerName), connOptions);
                manScope.Connect();
                ManagementClass processClass = new ManagementClass(manScope, managementPath, objectGetOptions);
                ManagementBaseObject inParams = processClass.GetMethodParameters("Create");
                inParams["CommandLine"] = "cmd /c " + command + " > c:\\tmp.txt";
                ManagementBaseObject outParams = processClass.InvokeMethod("Create", inParams, null);
                Thread.Sleep(5000);
                StreamReader sr = new StreamReader("\\\\" + computerName + "\\c$\\tmp.txt");
                line = sr.ReadLine();
                while (line != null)
                {
                    result += line;
                    line = sr.ReadLine();
                }
                sr.Close();
            }
            catch (Exception exception)
            {
                exception.Message.ToString();
            }
            return result;
        }

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LVL 41

Accepted Solution

by:
graye earned 250 total points
ID: 21821113
Isn't that solution exactly what I had suggested?    Namely, to redirect the output to a file, wait a while, and then read the contents of the file
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Author Closing Comment

by:invisiblekhaos2
ID: 31465704
Thanks, I never saw your message though... found the answer on another website...
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