xtd(ADM)                        19 June 1992                        xtd(ADM)


 Name

    xtd - extract and print xt driver link structure

 Syntax

    xtd [ -f ] [ -n ... ]

 Description

    The xtd command is a debugging tool for the xt(HW) driver.  It performs
    an XTIOCDATA ioctl(S) call on its standard input file to extract the link
    data structure for the attached group of channels.  This call will fail
    if data extraction has not been configured in the driver or the standard
    input is not attached to an xt(HW) channel.  The data is printed one item
    per line on the standard output.  The output should probably be formatted
    via pr -3.

    The optional flags affect output as follows:

    -n   n is a number in the range 0 to 7.  Channel n is included in the
         list of channels to be printed.  The default prints all channels,
         whereas the occurrence of one or more channel numbers implies a sub-
         set.

    -f   Causes a ``formfeed'' character to be put out at the end of the out-
         put for the benefit of page-display programs.

 Diagnostics

    Returns 0 upon successful completion; 1 otherwise.

 See also

    ioctl(S), pr(C), xt(HW), xts(ADM), xtt(ADM), xtproto(M)