Yo Eric! Serious progress!
On Tue, 24 May 2016 10:46:32 -0400
"Eric S. Raymond" <e...@thyrsus.com> wrote:
> Gary E. Miller <g...@rellim.com>:
> > Great progress, but...
> >
> > It could use some photos, got a smart phone with camera?
>
> There is now one photo, of the blue-wire mod required for the Chinese
> board. What others would you suggest?
Maybe one that shows 'North Up" ?
> > Typo:
> >
> > "Uputronics board snugs ino an on-board fitting and"
> >
> > ino -> into
>
> Already fixed.
Yeah, since you took so long to get to my email. :-)
> Note: your host may automount the card if it has been set up for
> Linux before - whether this happens depends on what distribution
> and desktop environment you are using. If your window manger pops
> up a file-browser view of the device, you should unmount it
> through that GUI.
A common case, but not definitive. Why do you avoid directly telling the
user to check df and mount commands?
> > ddimage could unzip to stdout and save some disk space:
> >
> > unzip -c 2016-03-18-raspbian-jessie-lite.zip | ddfldd bs=4M
> > of=/dev/sdd
>
> Disk space is cheap. Waiting is expensive. I'd ratther conditionally
> unzip if the img file isn't already present.
Which increases waiting. Uncompressing and dumping a zip file is
usually faster than dumping the same file uncompressed. You are limited
by disk speed, not unzip speed.
But not a big deal either way. I was in a space contrained environment
so it mattered to me.
> > "You should see NMEA0183 sentences issuing in bursts once per
> > second"
> >
> > example?
>
> I didn't try because you can't really convey the burst timing in
> print.
True, but the newbie may not know wheat NMEA looks like.
> I don't want to wire in assumptions about the GPS type here,
> especially since we're supporting three different types. There should
> be an Advanced Topics section - not yet written - about computing a
> fudge.
Fair enough.
> That's in the config --install stage. Remember, one goal of this
> procedure is minimizing reversibility effort until we know the
> software works.
One can always reinstall ntpd classic. But not a big deal either way.
> > # gpsd/gpsd /dev/gpsd0
>
> I did not. It's forced in the timeserver build.
Ah, OK. Maybe we can get it in all gpsd buids soon? :-)
> > "Install the pinup script:"
> >
> > Uh, I don't have that??
>
> You do. clocmaker --build copies it in. If it doesn't, update your
> copy.
You linked to it later in the doc, prolly should be linked in the
first usage.
> > "On the SBC, create an account for "me" (whatever username you like)
> > using adduser run as root."
> >
> > I have seen windows hosts hacked in minutes after going live. Do
> > this WAY earlier in the process.
>
> I think this is over-paranoid. Your Pi is not an Internet-facing
> machine;
Uh, mine are internet facing. And for those lucky to have IPv6, even if
they have NATed IPv4 they have public IPv6! This surprises many people.
I what my logs carefully, even the NSA warns me not to. :-)
Many times a day I see people trying the default pi login. Three times
in the last hour!
> Again, the reason I moved this to late in the sequence is to minimize
> user hand-work before the point where we know the build would work.
> I consider that important.
And I consider getting hacked more important. Seen it happen too many
times. This is "NTPsec" right? Or am I in the wrong place?
> > "Don’t be overly concerned if ntpq -p initially shows large jitter.
> > "
> >
> > Examples of good and bad?
>
> Please supply and explain them. I'm still not sure of my ability to
> tell the difference.
I'll ponder some good ones.
> > I find perple get "pstree -paul" a lot quicker.
>
> Good point. Now says "as you can verify by running "pstree -paul" (or
> the older-school "ps ax")"
Or maybe "pstree -paul | less"
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
g...@rellim.com Tel:+1 541 382 8588
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