how can i be certain that a file has copied exactly?

[Gary Kline]

On Fri, Dec 26, 2008 at 05:30:46PM -0800, Corey Chandler wrote:
> Gary Kline wrote:
> >	folks,
> >
> >	is there a way i can be sure that my little C program has copied a
> >	dos/win file named, say, foo.htm\;7 to simply foo.htm?
> >
> >	my program uses fopen/fgets/fputs to copy the markup files.  of
> >	the several i have copied, no problem.  unless i hack cmp or diff, 
> >	i have to avoid the shell.
> >
> >	any ideas? in other words, does anybody have a prefab cmp(oldfile, 
> >	newfile)
> >	fn?
> >
> >	gary
> >
> >
> >  
> http://www.daemonology.net/bsdiff/ seems to maybe do what you want-- 
> essentially diff should solve your problem, although I'm not too clear 
> on how that works on differently compiled binaries.
> 
> I also seem to recall there was a test function that returned different 
> results based on if the two files mentioned as arguments were identical, 
> but I can't recall offhand quite what it was.
> 
> -- CJC


	ugh, i just founf both gif's and jpeg's with that same suffix.
	have to use something like

	while (n = read...)>0
		write(fd2, buf,n)

	if i want to copy these binary files.  ... maybe not: who needs
	graphics? :-)



-- 
 Gary Kline  kline at thought.org  http://www.thought.org  Public Service Unix
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