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Combining two files

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Top Forums Shell Programming and Scripting Combining two files
# 8  
Old 06-13-2007
Sure, and if they do contain tabs, then it's simple to specify a unique delimiter.
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LEARN ABOUT OPENSOLARIS

rawtoppm

rawtoppm(1)                                                   General Commands Manual                                                  rawtoppm(1)

NAME

       rawtoppm - convert raw RGB bytes into a portable pixmap

SYNOPSIS

       rawtoppm [-headerskip N] [-rowskip N] [-rgb|-rbg|-grb |-gbr|-brg|-bgr ] [-interpixel|-interrow] width height [imagedata]

DESCRIPTION

       Reads  raw RGB bytes as input.  Produces a portable pixmap as output.  The input file is just RGB bytes.  You have to specify the width and
       height on the command line, since the program obviously can't get them from the file.  The maxval is assumed to be 255.  If  the  resulting
       image is upside down, run it through pnmflip -tb .

OPTIONS

       -headerskip
              If the file has a header, you can use this flag to skip over it.

       -rowskip
              If there is padding at the ends of the rows, you can skip it with this flag.

       -rgb -rbg -grb -gbr -brg -bgr
              These flags let you specify alternate color orders.  The default is -rgb.

       -interpixel -interrow
              These  flags  let  you specify how the colors are interleaved.  The default is -interpixel, meaning interleaved by pixel.  A byte of
              red, a byte of green, and a byte of blue, or whatever color order you specified.  -interrow means interleaved by row - a row of red,
              a  row  of  green, a row of blue, assuming standard rgb color order.  An -interplane flag  - all the red pixels, then all the green,
              then all the blue - would be an obvious extension, but is not implemented.  You could get the same effect by splitting the file into
              three parts (perhaps using dd), turning each part into a PGM file with rawtopgm, and then combining them with rgb3toppm.

SEE ALSO

       ppm(5), rawtopgm(1), rgb3toppm(1), pnmflip(1)

AUTHOR

       Copyright (C) 1991 by Jef Poskanzer.

                                                                 06 February 1991                                                      rawtoppm(1)