# macptopbm(1) - man - phpMan

[macptopbm(1)](https://www.chedong.com/phpMan.php/man/macptopbm/1/markdown)                           General Commands Manual                          [macptopbm(1)](https://www.chedong.com/phpMan.php/man/macptopbm/1/markdown)



## NAME
       macptopbm - convert a MacPaint file into a portable bitmap

## SYNOPSIS
       **macptopbm** [**-extraskip** _N_] [_macpfile_]

## DESCRIPTION
       Reads a MacPaint file as input.  Produces a portable bitmap as output.

## OPTIONS
### -extraskip
              This  flag is to get around a problem with some methods of transferring files from the
              Mac world to the Unix world.  Most of these methods leave the Mac files alone,  but  a
              few  of them add the "finderinfo" data onto the front of the Unix file.  This means an
              extra 128 bytes to skip over when reading the file.  The symptom to watch for is  that
              the  resulting  PBM  file  looks shifted to one side.  If you get this, try **-extraskip**
              128, and if that still doesn't look right try another value.

       All flags can be abbreviated to their shortest unique prefix.

## SEE ALSO
       [picttoppm(1)](https://www.chedong.com/phpMan.php/man/picttoppm/1/markdown), [pbmtomacp(1)](https://www.chedong.com/phpMan.php/man/pbmtomacp/1/markdown), [pbm(5)](https://www.chedong.com/phpMan.php/man/pbm/5/markdown)

## AUTHOR
       Copyright (C) 1988 by Jef Poskanzer.  The MacPaint-reading code  is  copyright  (c)  1987  by
       Patrick J. Naughton (<naughton@wind.sun.com>).



                                            29 March 1989                               [macptopbm(1)](https://www.chedong.com/phpMan.php/man/macptopbm/1/markdown)