From: bde@runx.oz.au (Bruce Evans)
Subject: Re: Check_crc.c revisited
Organization: RUNX Un*x Timeshare.  Sydney, Australia.
Date: Thu, 21 Jan 93 06:14:21 GMT

In article <1993Jan20.014415.2360@crash> cwr@crash.cts.com (Will Rose) writes:
>
>Wim van Dorst's check_crc is pretty much essential for updating Minix,
>but it's a long time since I've used it and I keep forgetting that the
>script file is on standard input.  This is a repost with minor changes
>to parse the arguments so that the script can be either an ordinary
>argument, or on stdin as before.  This means that a parent directory
>name must be preceeded by -d.

Here is a later version of the program (now named checkcrc.c).  The
differences are almost as old as the program but are quite large and
useful.

Experience using this program shows that the feature of searching
several directories is harmful.  Someday we will need `checkcksum'.

 * Version 2.3 (24 April 1990)
 *	Fixed sscanf trying to read an unsigned short with %u, by
 *	replacing it with smaller, faster strtoul.  Beware that strtoul
 *	is broken in Minix 1.5.10.
 *	Fixed leading digits being stripped from file names.
 *	Fixed calls to the isspace macro so negative characters don't
 *	violate the domain of the macro.
 *	Delimited file names by spaces at the end too, to support
 *	trailing comments.
 *	Changed the output format to the same as the input format:
 *		crc count filename comment
 *	where crc and count are strings of decimal digits (perhaps
 *	with a leading sign), filename is a string of non-spaces, and
 *	comment is the rest.  When this program is used as a filter,
 *	the crc and count are not changed in value (unless they are
 *	out of bounds) and leading directories are stripped from the
 *	file name if that helps to find it.  Input comments are always
 *	discarded and output comments are always made.
 *	Printed usage message to stderr, so all stdout has nice format.
 * 	by Bruce Evans (evans@ditsyda.oz.au)
 * Version 2.4 (28 April 1990)
 *	Search distribution subdirectory.
 *	Fixed harmless bugs with cptr < file during file lookup.
 * 	by Bruce Evans (evans@ditsyda.oz.au)
 * Version 2.5 (13 May 1990)
 *	Use getopt.
 *	Search /usr/include for include/any and /usr/lib for lib/any.
 * 	by Bruce Evans (evans@ditsyda.oz.au)

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end
-- 
Bruce Evans  (bde@runx.oz.au)
Newsgroups: comp.os.minix