OT: Need Unix tech in Springfield, Missouri area

[Chuck Guzis]

On 8/2/2006 at 11:32 AM Don Y wrote:

>Unfortunately, you then need *one* box with hardware suitable
>to capture the incoming bytestream (i.e. *not* an SPP).

I know this is a vintage list, but at a minimum, PS/2-style bidirectional
parallel ports have been around for a very long time, so this shouldn't be
a problem.  Even if you had an old XT, printer and monochrome adapter cards
can usually be modified to operate in bi-directional mode.

After that, it's just the cable and a bit of software on the receiving
side.

>Ideally, the source box would have MD5 or some other hash
>available so you could gain some reassurance that the
>received image agreed with the sent image.

CRC-32 would probably do if MD5 wasn't available, and it's short enough
that if you had to key the C source in (assuming that the SCO box has a C
compiler), it wouldn't be an onerous job.   You could probably do that
while the transfer was running.

Failing that, you could transfer the tarball twice and compare the two
files.  A miscompare wouldn't tell you which was bad, but it would at least
indicate that something had gone wrong. 

Cheers,
Chuck