[nylug-talk] watch a file (realtime) on remote machine

[Marco Romeny]

On 5/2/07, wdg3rd at comcast.net <wdg3rd at comcast.net> wrote:
> Believe it or not, guys, Alex is a pretty cool dude when you have a beer with him in person.  He just seems like a jerk on-line.  The same way most people do.  I know I usually come across as an asshole.
> --

I am not as evil and annoying as I seem either ( sure, there are some
political issues that can tick me off -- I do lean left, Swedish
socialist as I am ).  I rather fight off any tail/inotify issues over
beer as well, I look funny when I have to admit being wrong:) (but I
swear I WASN'T)


> Ward Griffiths    wdg3rd at comcast.net
>
> The reason folks don't think of installing Windows as a painful experience is roughly the same reason men don't think of childbirth as a painful experience.      Mike, http://www.theregister.co.uk/2007/03/30/letters_3003/
>
>  -------------- Original message ----------------------
> From: "Marco Romeny" <marco.romeny at gmail.com>
> > On 4/28/07, Gary Mort <gmlug at saplings.us> wrote:
> > > Marco Romeny wrote:
> > > > On 4/27/07, alex at pilosoft.com <alex at pilosoft.com> wrote:
> > > >
> > > >> not realtime enough,
> > > >>
> > > > no? is yours?
>
> > > Actually, at the risk of validating Alex, I must say that his solution
> > > was the best one I could see.
> >
> > My solution had a bunch of problems and his was probably the least bad,
> > but what I objected against was his assertion that his was the correct. Being
> > the best out a few bad is not the same as being correct.
> >
> > >
> > > Looking up dnotify and inotify, it appears they hook into the file
> > > system directly(or the file system hooks into them) so that whenever any
> > > relevant change is made, they will be triggered.
> >
> > Now I have no idea what you are logging and how often something gets
> > logged, but many of my logs change faster than the return time of a
> > rsync-process, meaning I would easily run in to problems with that
> > solution.
> >
> > Peter's last response about reusing the ssh-channel seemed pretty interesting
> > to deal with this.
> >
> > >
> > > By hooking an rsync call into them, the files would be mirrored
> > > automatically whenever changes were made.  Since the requestor was using
> > > rsync already and his major objection was having to run it every few
> > > minutes, this would eliminate that problem and bring him down to just
> > > having to deal with network transit time and the system setup.
> > >
> > > Furthermore, if he likes any of the other solutions, dnotify/inotify
> > > could be used to trigger any of them to do the same thing(process the
> > > data upon change).
> > >
> > > So I've got to say that this solution is clearly superior to the others
> > > and well worth knowing about.
> > >
> > > Does it bother me that I didn't know about it?  Nope.  I don't try to
> > > claim to be an expert, just willing to do my best in whatever situation
> > > I'm in.  If others wish to sneer at my best advice at any given point in
> > > time, that's their choice.
> > >
> > > -Gary
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-- 
+++++++++++++++++++++++
Marco ter Haar Romeny
Email:marco.romeny at gmail.com
Tel: +1 917 945 2978