13 Sep
2019
13 Sep
'19
11:54 a.m.
On Thu, 12 Sep 2019, Larry McVoy wrote:
But here is an SCCS win. SCCS has a 16 bit ignore the
carry bit
checksum over the whole file. RCS has none of that.
Giggle... I found I could actually *edit* an SCCS file, provided I reset
the checksum to zero (it was then recalculated).
B) NFS errors. So all NFS implementations, Suns
included, had a bad
habit of returning a block of nulls. I dunno why but that is a thing.
The SCCS checksum would detect that. RCS and CVS did not have a
checksum so when NFS returned garbage, they were happy to return that to
you.
I believe that NFS is much more reliable now (yes, it used to be awful).
-- Dave