popctrl(1)                          CLIX                          popctrl(1)



  NAME

    popctrl - Controls parallel output port

  SYNOPSIS

    popctrl [-t count]

  FLAGS

    -t count
           Changes the timeout for writes to the device.  The count variable
           specifies the new timeout value in seconds.

  DESCRIPTION

    The popctrl command changes characteristics of the parallel output port
    when accessed through /dev/vop* or /dev/cop*.  Currently the only
    supported flag is -t.  If a MUX device is used, changing the timeout for
    writes will not change the MUX timeout.

  EXAMPLES

    The following command will change the timeout to 30 minutes for writes to
    /dev/vop* or /dev/cop*:

    popctrl -t 1800


  FILES

    /dev/vop*

    /dev/cop*

  NOTES

    Raster Operation Processor (ROP) graphics-based machines do not support
    this command.

  DIAGNOSTICS

    popctrl: Error opening /dev/vop:
           The /dev/vop file could not be opened to perform the ioctl().

    popctrl -t count failed:
           The ioctl() failed

  EXIT VALUES

    The popctrl command exits with a 1 if an error occurs.



  2/94 - Intergraph Corporation                                              1

  popctrl(1)                          CLIX                          popctrl(1)



  RELATED INFORMATION

    Files: pop(7)

    Functions:  ioctl(2)

















































  2                                              Intergraph Corporation - 2/94