NAME

       GRFDiff — A tool to create a binary GRF diff from to GRFs.

SYNOPSIS

       grfdiff [-hnxyv] [-l numbers] [-o GRF‐File] Original‐GRF‐file New‐GRF‐file

               Compare the two GRF files and produce a GRD file containing only the sprites from the second file
               that are different from the first file.

               GRFDiff makes a .GRD file with the same basename as the new GRF file.

OPTIONS

       -h      Display the help message.

       -l numbers
               Save  the  sprites  with these numbers in the .GRD instead of finding the modified sprites.  With
               this option, the first GRF file can be omitted.

               Format  of  the  numbers:  <from1>[‐<to1>][,<from2>[‐<to2>]]...   e.g.   1‐5,8,20‐31   (must   be
               increasing numbers).

       -n      Only show a list of modified sprites, don't make a .GRF file.

       -x      Make a self‐extracting (.EXE) file instead of a .GRD.

       -y      Answer 'y' to all questions.

       -v      Display the version.

       You  can  specify several sets of GRF files along with their -l options by separating them with a double‐
       dash `--'.  The result will be written to a single .GRD file.  Only -l is valid after the first set.

SEE ALSO

       The documentation in /usr/share/doc/grfcodec/

AUTHOR

       GRFDiff was written by Josef Drexler.

       This manual page was written by Remko Bijker.

COPYRIGHT

       GRFDiff is Copyright (C) 2003 by Josef Drexler <jdrexler@uwo.ca>

                                                 August 05, 2010                                      GRFDiff(1)