<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN"> <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <META NAME="Generator" CONTENT="MS Exchange Server version 6.5.7036.0"> <TITLE>OT: grep for hex characters</TITLE> </HEAD> <BODY>  Can anybody tell me how in general to grep files for hex characters 00 to ff inclusive? I can do the 26 characters 01 to 1a (being ^A to ^Z respectively) and also 20 to 7e (being <space>, punct, 0-9, A-Z, more punct, a-z, more punct) but am stuck for everything else: 00, 1b to 1f and 7f to ff. Dunno, I thought it might be something like find . | xargs grep -l "\x8f" but it's obviously not that. Thanks. (Maybe I can use sed just to find stuff, not replace it?) Fergus </BODY> </HTML>