Opens a pipe to a system shell command and returns file descriptors that you can pass to subsequent Pipes VIs.

クローズ・パイプ VIを使用して、返されたファイル記述子をすべてクローズする必要があります。


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入力/出力

  • cstr.png command line —

    command line indicates which command for LabVIEW to call to run your program.

  • cenum.png mode —

    mode determines whether you want to read and/or write data.

    0
    Read
    1
    Write
    2
    Read & Write
  • cbool.png return standard error fd? —

    return standard error fd? sets the VI to return error file descriptor when set to TRUE. The default is FALSE.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • ii32.png process ID —

    process ID returns the process ID.

  • ii32.png read file descriptor —

    read file descriptor returns a file descriptor if you set mode to Read or Read + Write.

  • ii32.png write file descriptor —

    write file descriptor returns a file descriptor if you set mode to Write or Read + Write.

  • ii32.png error file descriptor —

    error file descriptor returns a file descriptor you can pass to the Read From Pipe and Close Pipe VIs if you set return standard error fd? to TRUE.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.