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Date: Thu, 2 Mar 2023 15:16:39 +1100
From: Jonathan Gray <jsg@jsg.id.au>
To: Noel Chiappa <jnc@mercury.lcs.mit.edu>
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Subject: [TUHS] Re: Unix v7 icheck dup problem
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On Wed, Mar 01, 2023 at 04:29:16PM -0500, Noel Chiappa wrote:
>     > I'm not sure if 'fsck' would fix these
> 
> Turns out it was called 'fcheck' when we had it.
> 
>     > I have a V6 one
> 
> I'd already put it on my Web site, here:
> 
>   http://ana-3.lcs.mit.edu/~jnc/tech/unix/s1/fcheck.c
> 
> if anyone wants it.

That is close, but slightly different to the PWB fcheck.c
https://www.tuhs.org/cgi-bin/utree.pl?file=PWB1/sys/source/s8/fcheck.c

UNSW also had

/*
 *	chk: fast combination of icheck+dcheck
 *
 *	Original from Vrije Universiteit, Amsterdam.
 *	Modified by Kevin Hill, University of NSW.
 */ 

https://www.tuhs.org/cgi-bin/utree.pl?file=AUSAM/source/S/chk.c