#!/bin/csh -f
# hexdiff
# -----------------------------------------------------------------------------
# Shell script to compare the hex dumps of 2 files.
# -----------------------------------------------------------------------------
# Usage:  See Usage section below or run with -h or --help option to see usage.
# Assumptions:
# Effects:
# Notes:
# Implementation Notes:
# Portability Issues:
# Revision History:
#   $Log$
# -----------------------------------------------------------------------------

if ($#argv < 2 || "$1" == "-h" || "$1" == "--help") then
   echo "Usage: $0:t file1 file2"
   exit 1
endif

set timestamp = `date "+%Y_%m_%d__%H_%M_%S"`
set tempfile1  = "/tmp/$0:t_$$_file1_$timestamp"
set tempfile2  = "/tmp/$0:t_$$_file2_$timestamp"

# -v = Verbose.  Don't show * instead of one or more lines that are identical 
#      to the previous line.
#?? Perhaps look into xxd as an alternative to hexdump?  Just discovered it,
#?? and have not yet investigated at all.  --Fred 3/25/2020
#?? Or perhaps od
hexdump -v $1:q > $tempfile1:q
hexdump -v $2:q > $tempfile2:q

windiff $tempfile1:q $tempfile2:q

rm $tempfile1:q $tempfile2:q