Search for a value in a file

hexdumpSearch.sh

#!/bin/bash

FILE_TO_SEARCH_IN=$1
STRING_TO_SEARCH_FOR=$2
VALUE_TO_INSERT=$3
#TODO: figure out how to get only the address PLUS OFFSET
ADDRESS_TO_INSERT=`hexdump -C $FILE_TO_SEARCH_IN | grep $STRING_TO_SEARCH_FOR`

function printAddress {
 	echo $ADDRESS_TO_INSERT
 	exit 0
}

function replaceAtAddress {
	# TODO: use value from above to determine address to replace
	#ADDRESS_TO_INSERT_AT=0x0000
	
	echo -n $VALUE_TO_INSERT | dd conv=notrunc of=$FILE_TO_SEARCH_IN bs=1 seek=$(($ADDRESS_TO_INSERT))
	exit 0
}

if [ !$ADDRESS_TO_INSERT ]; then
	printAddress
else
	echo "Sorry. Not ready yet. TODO though"
	exit 1
	# replaceAtAddress
fi

exit $?