NAME

       opmhash - Hasher for summary keywords in Eclipse files

SYNOPSIS

       opmhash [OPTIONS] ECL_DECK_FILENAME [ECL_DECK_FILENAME_2] [ECL_DECK_FILENAME_3] ...

DESCRIPTION

       The  purpose of the opmhash program is to load a deck and create a summary, by diffing two
       such summaries it is simple to determine if two decks are similar.   For  each  keyword  a
       hash  of  the  normalized  content is calculated. The output of the program will look like
       this:

       RUNSPEC
              : 13167205945009276792

       TITLE  : 16047371705964514902

       DIMENS : 1264233216877515756

       NONNC  : 10052807539267647959

       OIL    : 6013609912232720008

       WATER  : 14106203893673265964

       Total  : 7362809723723482303

       Where the 'random' integer following each keyword is the  hash  of  the  content  of  that
       keyword.  The  hashing  is  insensitive  to  changes  in white-space and comments and file
       location. At the bottom comes a total hash of the  complete  content.  The  hash  of  each
       keyword is insensitive to shuffling of keywords, but the total hash depends on the keyword
       order.

OPTIONS

       -l : Add filename and linenumber information to each keyword.

       -s : Short form - only print the hash of the complete deck.

       -S : Silent form - will not print any deck output.

       It is possible to add multiple deck arguments, they are then scanned repeatedly,  and  the
       decks  are compared. In the case of multiple deck arguments the exit status of the program
       will be zero if all are equal and nonzero in case of differences.