Solved

Run a command via cmd

Posted on 2010-11-29
1
1,223 Views
Last Modified: 2016-09-29
I'm trying to run cmd.exe with admin privilege and use flushdns on it, how can i do it though ? and catch the output to a TMemo, the attached code is what i'm using but it doesn't seem to flush the DNS cache, where do i put "/flushdhsn" in ?


procedure RunDosInMemo( DosApp: String; AMemo: TMemo ) ;
const
  ReadBuffer = 2400;
var
  Security : TSecurityAttributes;
  ReadPipe, WritePipe : THandle;
  si : TStartUpInfo;
  pi : TProcessInformation;
  Buffer : PAnsiChar;
  BytesRead : DWord;
  Apprunning : DWord;
begin
  With Security do
   begin
    nlength := SizeOf(TSecurityAttributes) ;
    binherithandle := true;
    lpsecuritydescriptor := nil;
   end;
  if Createpipe(ReadPipe, WritePipe, @Security, 0) then
   begin
    Buffer := AllocMem(ReadBuffer + 1);
    FillChar( si, Sizeof(si), #0 );
    si.cb := SizeOf( si );
    si.hStdOutput := WritePipe;
    si.hStdInput := ReadPipe;
    si.dwFlags := STARTF_USESTDHANDLES + STARTF_USESHOWWINDOW;
    si.wShowWindow := SW_HIDE;

    if CreateProcess( PChar(DosApp), '-flushdns', @Security, @Security,
                            TRUE, NORMAL_PRIORITY_CLASS, nil, nil, si, pi)
    then
    begin
     repeat
      Apprunning := WaitForSingleObject( pi.hProcess, 100 );
      Application.ProcessMessages;
     until (Apprunning <> WAIT_TIMEOUT);
      Repeat
        BytesRead := 0;
        ReadFile(ReadPipe, Buffer[0], ReadBuffer, BytesRead, nil);
        Buffer[BytesRead] := #0;
        OemToAnsi( Buffer, Buffer );
        AMemo.Text := AMemo.Text + String(Buffer) ;
         Application.ProcessMessages;
      until (BytesRead < ReadBuffer);
   end;
   FreeMem( Buffer ) ;
   CloseHandle( pi.hProcess ) ;
   CloseHandle( pi.hThread ) ;
   CloseHandle( ReadPipe ) ;
   CloseHandle( WritePipe ) ;
   end;
end;

Open in new window

0
Comment
Question by:rotem156
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 32

Accepted Solution

by:
Ephraim Wangoya earned 500 total points
ID: 34232195
if you are flushing the dns then should be

RunDosInMemo( 'cmd.exe /c ipconfig /flushdns', Memo1 );
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Convert MS Word document to a PDF file 9 114
What .NET URL re-routing tool did I use? 2 84
MS Access from Delphi 31 78
Why use this lambda? 12 60
After several hours of googling I could not gather any information on this topic. There are several ways of controlling the USB port connected to any storage device. The best example of that is by changing the registry value of "HKEY_LOCAL_MACHINE\S…
Whether you've completed a degree in computer sciences or you're a self-taught programmer, writing your first lines of code in the real world is always a challenge. Here are some of the most common pitfalls for new programmers.
This is Part 3 in a 3-part series on Experts Exchange to discuss error handling in VBA code written for Excel. Part 1 of this series discussed basic error handling code using VBA. http://www.experts-exchange.com/videos/1478/Excel-Error-Handlin…
A short tutorial showing how to set up an email signature in Outlook on the Web (previously known as OWA). For free email signatures designs, visit https://www.mail-signatures.com/articles/signature-templates/?sts=6651 If you want to manage em…

740 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question