title: What is the best way to search a large file for hexadecimal and export readable results to a file? (OS Agnostic)
body: <p>My goal is to search a 500Gb file for a series of hexadecimal characters and to export the results into a text file. I need to automate this, as there are many patterns to be searched.</p>
  <p>The results need to include: the location in the file, the 100 preceding hex characters values (represented in both hex and ascii).</p>
  <p>As noted, this is OS agnostic (and language agnostic, if anyone suggests scripts or code).</p>