informative. thanks.
--- On Thu, 3/8/12, Viesturs Lācis wrote:
> From: Viesturs Lācis
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: "Enhanced Machine Controller (EMC)"
> Date: Thursday, March 8, 2012, 7:21 AM
> 2012/3/8 charles green :
&g
like jay-leno-people-on-the-street-survey-well-understood, right? "excuse me
sir, would you like to take a shot at describing a 'multivibrator'?"
--- On Thu, 3/8/12, Jon Elson wrote:
> From: Jon Elson
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe
charles green wrote:
> cnczone - ive seen that before somehow.
>
> the task manager of winxp has a process priority setting, with one of the
> choices being 'realtime'. never tried it for anything. but the realtime
> mode of operation in linux is still a general hardware timeshare approach,
>
Mark Wendt wrote:
> You don't really have much of an understanding about computers,
> operating systems, and the things done inside the OS. If you want an
> understanding of what multi-tasking really is, do a search on operating
> system schedulers. You're talking about multi-processing, not
charles green wrote:
>> And why should anyone of us use TurboCNC anyway, if LinuxCNC
>> provides
>> more features and better performance?
>>
>
> that was my question. is such claim true? it is a bit like speaking english
> and wondering if any other language is as effective for a particular
On Thu, Mar 8, 2012 at 5:08 AM, Mark Wendt wrote:
> Depends on where you are and what you are doing. Almost all the
> machines here at the Lab have a Class C address. TCP wrappers keeps
> unwanted hosts out of my pants, and has worked well for doing that for a
> long time. The Lab owns all the
2012/3/8 charles green :
> cnczone - ive seen that before somehow.
Probably You saw it mentioned in other discussion, where I posted it,
but did You read it? I had a link in there that explains Your next
question.
> the task manager of winxp has a process priority setting, with one of the
> choi
e:
> From: Viesturs Lācis
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: "Enhanced Machine Controller (EMC)"
> Date: Thursday, March 8, 2012, 6:01 AM
> 2012/3/8 charles green :
> > the machines i work with only have tape drives and
> serial
Wendt
>> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
>> To: "Enhanced Machine Controller (EMC)"
>> Date: Thursday, March 8, 2012, 6:01 AM
>> On 03/08/2012 08:55 AM, charles green
>> wrote:
>>>> It's true if all you want i
that is certain to require a fresh clock battery and some floppy drive
cleaning. and $60? does shareware run without registration fees?
--- On Thu, 3/8/12, Mark Wendt wrote:
> From: Mark Wendt
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: "En
gt; Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: "Enhanced Machine Controller (EMC)"
> Date: Thursday, March 8, 2012, 6:06 AM
> 2012/3/8 charles green :
> >> It's true if all you want is a machine controller
> and
> >> noth
On 03/08/2012 09:26 AM, charles green wrote:
> the comp i'm on right now, i dont think i could find if i went shopping for
> used. it's still pluggin along. not hefty enough for penguin ubuntu 6 tho -
> that was my first try, and 667MHz + 256Mbyte ram couldn't do it. admittedly,
> i never spe
; Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: emc-users@lists.sourceforge.net
> Date: Thursday, March 8, 2012, 4:46 AM
> On 03/08/2012 07:17 AM, charles green
> wrote:
> > the overcapacity problem is a problem of going to
> unnecessary lengths to accompl
2012/3/8 charles green :
>> It's true if all you want is a machine controller and
>> nothing else.
>
> so, again, strictly in the capacity of a machine controller, turbo cnc vs
> linuxcnc, the comparison and contrast results are what? have you a basis for
> comparison? do not limit your scrutin
2012/3/8 charles green :
> the machines i work with only have tape drives and serial ports, so all cam
> files are sent over serial lines as text (ascii i think). failed controller
> component replacement is a problem because the hardware platform does not
> have long term stability. it seems
On 03/08/2012 08:55 AM, charles green wrote:
>> It's true if all you want is a machine controller and
>> nothing else.
>>
> so, again, strictly in the capacity of a machine controller, turbo cnc vs
> linuxcnc, the comparison and contrast results are what? have you a basis for
> comparison?
s.
--- On Thu, 3/8/12, Mark Wendt wrote:
> From: Mark Wendt
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: emc-users@lists.sourceforge.net
> Date: Thursday, March 8, 2012, 5:36 AM
> On 03/08/2012 08:24 AM, charles green
> wrote:
> > that was my q
the pc realm -
it is goverened by fashion and fleeting lust for market fads.
who knows, maybe cartesian coordinates will eventually go out of style.
--- On Thu, 3/8/12, Viesturs Lācis wrote:
> From: Viesturs Lācis
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install
On 03/08/2012 08:24 AM, charles green wrote:
> that was my question. is such claim true? it is a bit like speaking english
> and wondering if any other language is as effective for a particular purpose.
> of course the answer is that english is the best language.
>
It's true if all you wan
om: Viesturs Lācis
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: "Enhanced Machine Controller (EMC)"
> Date: Wednesday, March 7, 2012, 8:34 AM
> 2012/3/7 charles green :
> > hmm. has anyone else tried turbo cnc?
> >
>
> I guess th
2012/3/8 charles green :
>
> the disposal liabilty pcs of a decade vintage have plenty of capacity to
> function as machine controllers, so why not repurpose them to that task
> rather than a dumpsite?
Ok, I totally agree with the point on nature-responsible (hopefully I
spelled the term correct
On 03/08/2012 07:17 AM, charles green wrote:
> the overcapacity problem is a problem of going to unnecessary lengths to
> accomplish a defined task, a problem of applying the most extreme measures in
> straigtforward cases.
>
Who said anything about going to unnecessary lengths? The capacity
suitable devices for every application, but they are useful, well defined, and
behave in predictable and consistant ways. tools that have such traits are
desireable. continuous retooling is a drag.
--- On Wed, 3/7/12, Dave wrote:
> From: Dave
> Subject: Re: [Emc-users] EMC2/Ubuntu updates
On 03/07/2012 01:35 PM, Jon Elson wrote:
> Mark Wendt wrote:
>
>> I've found it's easier to put ALL: ALL in /etc/hosts.deny, then
>> selectively put the hosts I want allowed in /etc/hosts.allow. You can
>> even get more granular by specifying what you want the hosts to be able
>> to access. T
On 03/07/2012 01:35 PM, Jon Elson wrote:
> Mark Wendt wrote:
>> I've found it's easier to put ALL: ALL in /etc/hosts.deny, then
>> selectively put the hosts I want allowed in /etc/hosts.allow. You
>> can even get more granular by specifying what you want the hosts to
>> be able to access. Tcpd
Kirk Wallace wrote:
> Recently, I had a shortage of PC's around here and wanted to get a
> LinuxCNC to work on whatever I could scrape together. I needed a
> LinuxCNC PC to experiment with but it wasn't important enough to spend
> any money on. In dusting off my retired PC's, it became clear that t
Mark Wendt wrote:
> I've found it's easier to put ALL: ALL in /etc/hosts.deny, then
> selectively put the hosts I want allowed in /etc/hosts.allow. You can
> even get more granular by specifying what you want the hosts to be able
> to access. Tcpd is a wunnerful thang.
>
I'm running a prima
On Wed, 2012-03-07 at 11:58 -0500, Dave wrote:
> I'm not understanding the "overcapacity problem"?? If your car can go
> 80 mph, do you trade it in and get a crappier one that can only go 70?
>
> There is a reason why old Windows 95/98 PCs are dirt cheap.
>
> I threw out a bunch of Windows 98
one else tried turbo cnc?
>
>
> --- On Wed, 3/7/12, Mark Wendt wrote:
>
>
>> From: Mark Wendt
>> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
>> To: emc-users@lists.sourceforge.net
>> Date: Wednesday, March 7, 2012, 7:17 AM
>> O
2012/3/7 charles green :
> hmm. has anyone else tried turbo cnc?
>
I guess that this is not the right place to ask this question - we are
LinuxCNC users here :))
And why should anyone of us use TurboCNC anyway, if LinuxCNC provides
more features and better performance?
With regards of modern PCs
hmm. has anyone else tried turbo cnc?
--- On Wed, 3/7/12, Mark Wendt wrote:
> From: Mark Wendt
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: emc-users@lists.sourceforge.net
> Date: Wednesday, March 7, 2012, 7:17 AM
> On 03/07/2012 10:11 AM, charle
On 03/07/2012 10:11 AM, charles green wrote:
> turbo cnc? interesting. ..nice - $60 to register the shareware. but that is
> significantly less than the cost and tortuous hours of overcapacity
> investment. i do have a win 98 cd and a 486 box in the closet, but then i've
> already put in the
for a parport switch box.
did you use turbo cnc? how, strictly in its function as a machine control,
does it compare to linuxcnc?
--- On Wed, 3/7/12, Mark Wendt wrote:
> From: Mark Wendt
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: emc-users@lists.sourcefo
On 03/07/2012 09:01 AM, charles green wrote:
> excess capacity is great if you are into excess capacity. i junked at least
> three pc boxes before i found something that could support all that capacity.
> my intention was to control three or four stepper motors, and shuffle a few
> simple text
really looked for any eight bit
machines, because they have trouble with the gig or three of ram for enhanced
machine capacity requirements.
--- On Tue, 3/6/12, Mark Wendt wrote:
> From: Mark Wendt
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To:
On 03/06/2012 11:41 PM, Jon Elson wrote:
> Eric Keller wrote:
>
>>OTOH, I seem to remember that
>> anonymous got into someone's home router somehow, probably by guessing the
>> person's password.
>>
>>
> One GREAT tool that can be used on Linux nodes that are used as
> router/firewall
Eric Keller wrote:
> OTOH, I seem to remember that
> anonymous got into someone's home router somehow, probably by guessing the
> person's password.
>
One GREAT tool that can be used on Linux nodes that are used as
router/firewalls
is denyhosts. It checks the login failures, and if a thresho
On Tue, Mar 6, 2012 at 1:03 PM, Jon Elson wrote:
>
> Well, it would be a bad idea to have a CNC machine directly on the net with
> a wide-area network address. However, if you have a router for a private
> net, a hacker would have to break into the public node and then use that
> to attack the p
charles green wrote:
>> Not that there are linux viruses, but there are
>> vulnerabilities if
>> your machine doesn't stay 'patched' with security patches.
>> And not networking helps keep it safe.
>>
Well, it would be a bad idea to have a CNC machine directly on the net with
a wide-area netwo
On Tuesday, March 06, 2012 09:44:51 AM Tony Zampini did opine:
> Thanks guys for your replies.
>
> Chris, FYI, I installed the 10.04 live CD
>
> Jack, my linux box is on the network because I use DropBox
> to be able to access the NC files I create in Eagle on my
> windows laptop.
>
> Gene, I'm
2012/3/6 Tony Zampini :
>
> Is there a way to prevent Ubuntu from checking for updates?
Yes, in Update manager settings automatic checking for updates can be
turned off.
But then it after few weeks will display an icon, which will tell that
update information is outdated, so what I do for that is
On 03/06/2012 07:13 AM, charles green wrote:
> another argument if favor of the dedicated operation of machine controller
> pc's.
>
I've been allowing updates for the last five years and have yet to have
any issues. I don't do kernel updates. I also have additional software
loaded on my ma
"EMC"
Sent: Tuesday, March 06, 2012 12:50 AM
Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
>
>
>
>> From: ghesk...@wdtv.com
>> To: emc-users@lists.sourceforge.net
>> Date: Tue, 6 Mar 2012 00:27:08 -0500
>> Subject: Re: [Emc-users] EM
another argument if favor of the dedicated operation of machine controller pc's.
--- On Mon, 3/5/12, Jack Coats wrote:
> From: Jack Coats
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
> To: "Enhanced Machine Controller (EMC)"
> Date: Mon
> From: ghesk...@wdtv.com
> To: emc-users@lists.sourceforge.net
> Date: Tue, 6 Mar 2012 00:27:08 -0500
> Subject: Re: [Emc-users] EMC2/Ubuntu updates - safe to install?
>
> On Tuesday, March 06, 2012 12:15:08 AM Tony Zampini did opine:
>
> > Hi all,
> >
>
On Tuesday, March 06, 2012 12:15:08 AM Tony Zampini did opine:
> Hi all,
>
> I installed EMC2/Ubuntu from the Live CD about a year ago,
> but haven't used it much until now. Now, when I start Ubuntu,
> I'm presented with a dialog box listing a bunch of updates.
>
> Is it safe to install these up
Unless you want to go to lots of pain, don't install them. Also,
don't keep your LinuxCNC machine on the 'net.
Why? Keeps updates from being installed, and keeps the internet
'boogiemen' from getting to an otherwise
unprotected machine. Computer viruses have trouble jumping an airgap
in networki
Hi all,
I installed EMC2/Ubuntu from the Live CD about a year ago,
but haven't used it much until now. Now, when I start Ubuntu,
I'm presented with a dialog box listing a bunch of updates.
Is it safe to install these updates? I thought I remember
reading somewhere that these updates should not
be
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