Re: Q: FILE* popen command shell calls

Jens.Toerring_at_physik.fu-berlin.de
Date: 12/12/04

  • Next message: James Lehman: "Re: Q: FILE* popen command shell calls" 
    Date: 12 Dec 2004 20:55:34 GMT

    James Lehman <james[remove]@akrobiz.com> wrote:
    > What's the short answer to get the output of dd,
    > good or bad, into a string?

    It depends. If you don't mind having standard output and standard
    error intermixed in the output then simple run you command with
    standard error redirected to stdout (i.e. with "2>&1" appended to
    the command). Otherwise you need, as the others already pointed
    out, to write your own version of popen(), creating a pipe, fork(),
    redirect the stderr of the command to the pipe (with dup() or
    dup2()) and then use one of the exec-functions to invoke the
    command. Then start reading on the pipe.

                                      Regards, Jens 

    -- 
  \   Jens Thoms Toerring  ___  Jens.Toerring@physik.fu-berlin.de
   \__________________________  http://www.toerring.de
  • Next message: James Lehman: "Re: Q: FILE* popen command shell calls"

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