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Fwd: Making a pipe or socket look like a file.
by J. R. Mauro July 1, 2009

July 1, 2009

Damn phone didn't let me reply all Begin forwarded message: > From: "J. R. Mauro" <jrm8005(a)gmail.com> > Date: July 1, 2009 10:00:44 EDT > To: Mike Frysinger <vapier(a)gentoo.org> > Subject: Re: [Wlug] Making a pipe or socket look like a file. > > > > > > On Jul 1, 2009, at 9:33, Mike Frysinger <vapier(a)gentoo.org> wrote: > >> On Tuesday 30 June 2009 22:35:44 J. R. Mauro wrote: >>> On Jun 30, 2009, at 22:24, Mike Frysinger wrote: >>>> On Tuesday 30 June 2009 21:47:18 J. R. Mauro wrote: >>>> >>>> please dont top post >>> >>> Who did? >> >> i'm guessing you made this comment ironically > > Actually, I was probably drunk, and I was definitely typing on my > phone both times, so forgive me if I wasn't an ml-etiquette zealot. > > Moving things is a worse sin than top posting. > >> >> >>>>> On Jun 30, 2009, at 21:42, Alex Camilo <alex.camilo(a)gmail.com> >>>>> wrote: >>>>>> I'm trying to extend the functionality of a piece of CAD software >>>>>> i'm using. The software package is called eagle and it has a >>>>>> custom >>>>>> in application scripting language that allows you to access an >>>>>> open >>>>>> CAD document by manipulating a tree of objects. The scripting >>>>>> language is fairly limited when it comes to talking to the >>>>>> outside >>>>>> world and only offers rudimentary file IO. I was wondering if >>>>>> any of >>>>>> you know how to make one end of a unix socket look like a file? >>>>> >>>>> Unfortunately, you can't. It's one of the design flaws of Unix. >>>>> You >>>>> might be able to wrap it with a FUSE filesystem. But sockets and >>>>> FIFOs >>>>> are unfortunately "special" >>>> >>>> i imagine you could use netcat to redirect from a named pipe so >>>> that >>>> you can >>> >>> FIFOs are kind of a hack. >> >> no one said otherwise. the fun thing about *nix is you can >> leverage these >> kind of hacks quickly. > > And then go through the pain of hacking on top of them and > supporting them. The *real* unix mindset was careful, elegantly > minimal design, not ad-hackery. That started outside Bell Labs. > > c.f. most perl programs > >> >> >>> Make a fuse filesystem in 20 lines of python >>> and you get something more robust and specialized, plus network >>> transparency for free >> >> if you say so, i havent done fuse work myself >> -mike > > It's laughably easy. I had a filesystem written to expose stuff from > the x server (mouse coordinates, snarf buffer, etc) in about four > hours. The hard part was dealing with how crappy x11 is (400 lines > to r/w the snarf buffer?! Gag me with a spoon! X is the epitome of > bad design and bad APIs) The fuse part was a joy, and probably all > of it was fewer lines than the snarf buffer. > > It seems like the OP wants a permanent solution, and maybe one that > involves biderectional communication and separation of roles into > multiple channels (he didn't say the last bit, but I've got five > bucks that says he'll want to once he thinks about it and looks at > other fileserver-based programs like Acme, rio, factotum, flickrfs, > etc) > > Using fifos for this is lunacy.

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OPENING - Linux kernel Engineer in north. MA - contract
by John Spencer June 22, 2009

June 22, 2009

Our client in northern MA has a 6+ mth contract opening for a Software Engineer with strong Linux kernel skills. Must have solid C++, Linux Kernel, embedded skills and wireless experience is a big plus, if not then strong datacoms experience is required. Education/Experience: Bachelor's in CS/EE, masters preferred, 8 + years of experience developing software in an embedded RTOS environment. The candidate should posses following skills: - Good understanding of Linux kernel and Real Time OS environment. - Must possess strong debugging and analytical skills. - Expertise with system level programming. Experience with C/C++. - Good Team Player, Independent worker and should posses good Communication Skills. Regards, Optimal Engineering Partners Inc. is now Symphony Services! John Spencer Office: 978-256-1113 ext 7608 Fax: 978-256-1184 jspencer(a)symphonysv.com Symphony Services 1 Technology Park Drive Westford , MA 01886 www.symphonysv.com <blocked::file:///C:\Documents%20and%20Settings\hripley-boyd\Application %20Data\Microsoft\Signatures\www.symphonysv.com> This electronic transmission (and any attached documents) contains information from Symphony Services and is for the sole use of the individual or entity it is addressed to. If you receive this message in error, please notify me and destroy the attached message (and all attached documents) immediately.

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Horrendous traffic - I may be late this evening...
by Andy Stewart June 18, 2009

June 18, 2009

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - -- Andy Stewart, Founder Worcester Linux Users' Group (http://www.wlug.org) Chelmsford Linux Meetup Group (http://linux.meetup.com/393) Amateur Radio: KB1OIQ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFKOrnIOjiraCaOTOoRAtBhAKDgdBCDnuikYdUeBgY1DuGhDjQreQCfSyx5 mg7AUMozIq0fxTNg5FQl5vk= =HU++ -----END PGP SIGNATURE-----

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long shot (external usb cdrom?)
by Doug Mildram June 18, 2009

June 18, 2009

In case you have an external USB cd-rom drive collecting dust, bring it tonite and I'll trade you something for it ! forgive the shamelessness. -doug

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Re: [Wlug] Wlug Digest, Vol 68, Issue 3
by Doug Mildram June 18, 2009

June 18, 2009

I'll be there tonite, plus I'll offer to host the BBQ (Boylston MA, 15-20min from worcester, near northborough/berlin/clinton/hudsonMA) doug and the dogs (my wife wouldnt mind but I think she'll be away that week) >In addition, we need to finalize our plans for the annual WLUG BBQ which > >is currently scheduled for Thursday, July 23rd. I am hopeful that > >someone will be willing to host this event, and bring mass quantities, > and...

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REMINDER: Meeting Thursday 7:00 PM
by Andy Stewart June 18, 2009

June 18, 2009

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi everybody, Our next meeting will be held on Thursday, June 18th, 2009 at 7:00 PM at the Access Grid Room on the WPI campus in Worcester, MA USA. All are welcome to attend. Our guest speaker will be Shankar Viswanathan who will talk about the Open Street Map project. This promises to be a great talk that you won't want to miss! Afterwards, we'll go out for pizza and soda and the usual camaraderie that always accompanies us to that local establishment. In addition, we need to finalize our plans for the annual WLUG BBQ which is currently scheduled for Thursday, July 23rd. I am hopeful that someone will be willing to host this event. It has been very successful in previous years. If interested, please send me email and/or come to the meeting. I look forward to seeing you on Thursday! Andy - -- Andy Stewart, Founder Worcester Linux Users' Group (http://www.wlug.org) Chelmsford Linux Meetup Group (http://linux.meetup.com/393) Amateur Radio: KB1OIQ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org iD8DBQFKOacFOjiraCaOTOoRAvycAJwPeYxJ/m8Yama/Lk/fKQVM1JQSYQCgsWkb jy8TpJngqTWS8yYEcxlegZw= =HOX6 -----END PGP SIGNATURE-----

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Good price for Nokia N810
by Clint Moyer June 15, 2009

June 15, 2009

With word out that the N900 will be released RSN, the price of the N810 has dropped. $180 at buy.com. http://www.buy.com/prod/nokia-n810-internet-tablet-full-pull-out-qwerty-key…

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Time and Date Stamp on Traceroute?
by E Johnson June 6, 2009

June 6, 2009

Does anyone know a quick command I can use to add a time and date stamp to traceroute? Man page for traceroute doesn't seem to have that option. Or is there a similar traceroute-type app that does incorporate this function? I need a quick app (nothing that generates a significant amount of network traffic) --where I can enter one command in terminal which will display a printout of a traceroute, to show the ISP or to show the tech in real-time when he comes out. The one I send the ISP needs the time/date in order to be effectively convincing to them. We're supposed to get 20,000 kb/s (up) here, and quite often, we're not, even with very low internet use in the PCs I'm running here. Even the download speed's choking... seems like something big right close is often are clogging the pipe. Traceroute I'm doing is only going from here to Cambridge. I did install a couple of other traceroute-type apps (such as tcptraceroute) but their man pages didn't seem to show this capability either. I liked tcptraceroute because it has a "don't fragment" option. Would like to time/date-stamp that. Thanks, Liz J

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Log Rotation (Snapshot)
by Tal Cohen May 31, 2009

May 31, 2009

I'm trying to setup a secondary log rotation mechanism on on of my production systems. Right now, the system is setup to rotate logs on a weekly basis. In addition to the weekly log rotation, I also need to take hourly snapshots (i.e. just the deltas between snapshots). As part of this process, I can not delete the original file since that is being handled by the weekly log rotation and archival process. These files get pretty big, so IO and CPU are both concerns. Any suggestions?

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If linux ruled the world
by Mike Leo May 21, 2009

May 21, 2009

http://www.beli.ws/blog/2009/05/technology/if-linux-was-the-most-used-syste…

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