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I'm trying to drive a command prompt by sending instructions via a NamedPipe.
This way you can (should) be able to send commands to the command prompt and at the same time "view" the result in the same window.
This is not allowed if you run a command prompt with "opt_flag" parameters (redirected streams) because this will disable StdOut on the cmd itself.
This small (trivial) snippet works for the first command sent to the cmd, but further submissions will fail.
Maybe the problem is in how I use the run () command to start a new cmd with the StdIn redirect from the NamedPipe. It seems that the generated cmd will close automatically after the first reception of the command via NamedPipe.
suggestions on how to make it work are welcome
#include <NamedPipes.au3> #include <WinAPI.au3> ; Creates an instance of a named pipe Global $sPipeName = "\\.\pipe\pipename" Global $hPipe = _NamedPipes_CreateNamedPipe($sPipeName, 1, 1) MsgBox(0, "Debug", "Pipe created. Now open a CMD") ; run a cmd with only StdIn redirected (StdIn data incoming from a pipe) Global $hCMD = Run(@ComSpec & " /K cmd < " & $sPipeName & @CRLF, "c:\") ; ok? MsgBox(0, "Debug", "now Send a command to the cmd via a NamedPipe") _StdInPipeWrite("dir" & @CRLF) MsgBox(0, 'Debug', "further commands will fail" & @CRLF & "now send command 'dir c:\windows'") $sMessage = "Dir c:\windows" & @CRLF _StdInPipeWrite($sMessage) MsgBox(0, 'Debug', "send another command (will also fail)" & @CRLF & "now send command 'echo Hello'") _StdInPipeWrite("echo Hello" & @CRLF) MsgBox(0, "Debug", "end of test") ProcessClose($hCMD) Func _StdInPipeWrite($sMessage) ; =============================================================================================================================== ; This function writes a message to the pipe ; =============================================================================================================================== Local $iWritten, $iBuffer, $pBuffer, $tBuffer $iBuffer = StringLen($sMessage) + 1 $tBuffer = DllStructCreate("char Text[" & $iBuffer & "]") $pBuffer = DllStructGetPtr($tBuffer) DllStructSetData($tBuffer, "Text", $sMessage) If Not _WinAPI_WriteFile( _ $hPipe, _ ; ...... Handle to the file to be written $pBuffer, _ ; .... Pointer to the buffer containing the data to be written $iBuffer, _ ; .... Number of bytes to be written to the file $iWritten, _ ; ... The number of bytes written 0 _ ; ............ [optional] A $tagOVERLAPPED structure or a pointer to it ) Then ConsoleWrite("WriteMsg: _WinAPI_WriteFile failed" & @CRLF & _WinAPI_GetLastErrorMessage()) Else ConsoleWrite("WriteMsg: write OK" & @CRLF & _WinAPI_GetLastErrorMessage() & @CRLF) EndIf EndFunc ;==>_StdInPipeWrite
I would like to be able to write a script to send commands to the console for creation of Gstreamer pipelines. I was thinking of something similar to this:
Local $iPID = Run("C:\Windows\System32\cmd", "", @SW_MAXIMIZE) ;THIS OPENS THE CONSOLE...!!! if $iPID == 0 Then ConsoleWrite(@CRLF & "I DID NOT OPEN CMD...error: " & @error & @CRLF) if $iPID <> 0 Then ConsoleWrite(@CRLF & "I OPENED CMD...!!!" & @CRLF) $hCmd = WinGetHandle("C:\WINDOWS\system32\cmd.exe") if $hCmd <> 0 Then WinActivate($hCmd) ;ensure command console is active... $sOutput = Send("cd C:\gstreamer\1.0\x86_64\bin" & @CRLF, $SEND_RAW) $sOutput = Send("gst-launch-1.0 videotestsrc ! autovideosink" & @CRLF, $SEND_RAW) Sleep(3000) ControlSend($hCmd, "", "", "exit" & @CR) EndIf ;$hCmd NOT "0"... I don't really know if this is the best way to open the console and send commands into it. I'm also not sure about how to best catch any errors that may occur...likely this needs to be accomplished with the STDOUTREAD command however I've not had experience using it before and therefore would appreciate some advice that anybody may offer.
Basically I'm seeking guidance on how to best automate the opening of the console, sending lines of commands to be executed, and handling any potential errors in the execution of those commands...I thank you in advance. Regards.
Script to get input from user ,check in csv file and read corresponding values and pass that value to cmdBy MadhaN
I have a csv file as below, I wand to find srno from csv and send corresponding ip and pass to commend cmd prompt.
Please guide me to create script .
With this script you can print Unicode text in the CMD screen
the script is easy to use
just you write the text that contains Unicode in the first input
and the script automatically reflect the code in the second input
you can copy the text to the clipboard
or you can try printing the text in the CMD window
I apologize to everyone for colors and shape if not appropriate
I'm a blind man and I do not see
Thank you for your understanding
Greetings to all of youCmdUtM.au3
Thanks to this post (https://www.autoitscript.com/forum/topic/189553-writing-to-cmd/?do=findComment&comment=1361142) I can now write a helpfile to the cmd when for instance passing parameter -h or -help at cmd. But then cmd is blocked by the script (I had to free it with CTRL+BREAK):
#include <WinAPI.au3> _WinAPI_AttachConsole() $hConsole = _WinAPI_GetStdHandle(1) _WinAPI_WriteConsole($hConsole, "Print helpfile................" & @CRLF) Inside MSDN Library then I found this sentence: A process can use the FreeConsole function to detach itself from its console.
But I don't find something like _WinAPI_FreeConsole(). How can I do it in another way?