[tlug] binary search of binary data

[Edward Wright <edw@example.com>]

Feels like there should be a simple answer to this, but it eludes me.

I want to search for a sequence of bytes in a binary file - kinda
like "grep -a -b" with a binary input "string". I've even tried

grep -a -b ` perl -e 'print "\xec\xa5\xc1\x01"'` <input file>

which works sometimes - depending on the hex values, I suppose.

Can anyone point me in the right direction?

Much thanks,
Ed