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5:04 PM
0
Q: Does kce know practical English?

MaraDoes @kce know that saying "an Unix" is - although grammatically accurate - a sign of a very low social I.Q.?

....
 
Sigh.
 
Is that a question or an answer, or both wrapped into one?
 
@ShaneMadden Belongs on Stack Overflow
2
 
He posted it as a question. It's really just whining because his other question was closes.
 
I do like the first question, though:
(1) What is the difference between an SNMP server, a DNS server and a so-called "Browse Master"?
Of course, the answer is, I AM THE BROWSE MASTER
2
 
5:06 PM
@Aaron The DNS server is the GATEWAY KEEPER.
 
WE SEEK ZUUL
 
Who you gonna call? NetBIOS!
 
It's like asking, "what are the differences between programing languages?" on SO. – kce 14 mins ago
Well, what are the differences between programming languages? – Mara 13 mins ago
I swear, you can't write material like this
 
Someone willing to check something out for me?
Git yo' web browsin' on?
 
Fucking sales weenie sent me a calendar invite for a follow up. Mother fucker.
 
5:14 PM
@holocryptic! Wanna check a website for me?
 
@BartSilverstrim yeah sure
 
-3
Q: Where are credentials for SQL Management Studio saved?

Gaurang MistryWhen we logged into SQL Management Studio(using Server Name, Login and Password) with checked "Remember Password". I need to know, where it save in PC. I need to format my PC. And when we install SQL Management Studio, then I will lose my all credentials which I saved. That's why I need to get t...

 
Is it SFW, or am I gonna get fired for it
 
Tell me if there's a video there?
 
5:15 PM
It's not really a bad questions per se, he's just Doing It Wrong.
 
SFW
I should hope...if it's not then there's something we need to address.
 
@BartSilverstrim vids broken
 
Dammit.
 
is "made question useful" too snarky in an edit commentary?
 
@BartSilverstrim And it looks like it's sending requests over and over again
@BartSilverstrim oh, something changed
 
5:17 PM
@Aaron Not at all.
 
@Holocryptic: ?
 
@BartSilverstrim did you change it to a pic?
 
No.
It may be trying to animate through pictures.
What does it look like?
 
@Holocryptic Yeah. And if I inspect them, I can see the individual pictures coming back in the requests.
 
5:19 PM
@holocryptic: it might be working...I'll need to further test.
 
@MikeyB It seems to have stopped though
 
It's supposed to be reverse-proxying from our camera.
 
Now it just sits on that pic
 
Okay, thanks.
 
Uh ewww... seriously:
 
5:19 PM
or maybe thats a vid then
 
aw
 
<script type="text/javascript">// <![CDATA[
var sourceImage = "http://www.athensasd.k12.pa.us/video/-wvhttp-01-/image.cgi?v=jpg:640x480&seq=1";
var framespersecond = 10;

function show() {
	document.getElementById("video").src = sourceImage + Math.random();

	setTimeout(show, 1000 / 5);
}

show();
// ]]></script>
 
I have to go...problem call.
 
the tar question got stomped
 
Yeah, it's a hack.
 
5:19 PM
@BartSilverstrim BartSignal activated?
 
More or less.
Thanks for checkin' guys! I'll probably be hacking away at this some more later.
 
kewl
 
@BartSilverstrim Yah :) It actually kind of works if I leave it open. But Chrome is not happy about it.
 
Sweet Jesus, I want to punch everyone that thinks that there are "Main" or "Primary" DCs.
0
A: How many Symantec Backup Exec agents do I need?

TomBecause Active Directory Sync's off of the "Primary" or Main Server IMHO There is no need to backup the AD from the other AD Servers. So, No, an agent for that on the other Server is not needed. You will still need an agent to back up their files though and obviously other Services if they have...

 
@MarkM It's half of TomTom
 
5:27 PM
The dumb half, apparently.
Wow, that guy owns a consulting company
From the front page of his site:
Customizable Service plans
Offsite Remote Backup plan
Data Recovery
Asset Management
Client Security
Network installs and or Migration
Supplement existing IT Staff
Custom Built PCs and Servers
Licensing compliance verification
Virus detection and removal
Broadband installation and configuration
Just based on that one answer, I wouldn't want him to do any of that for me.
 
"IT Solution Services is a premier provider of Network Solutions in Monterey, CA"

The real Network Solutions isn't going to be happy about using their name.
 
@MarkM Have I mentioned how much i love when vendors have a low price initial license; then nickel, dime, and hundred-dollar-bill the hell out of you for each "feature" you would expect to be in the base product.
 
@ChrisS But wait! You too, can be the proud owner of our product, for only the low low payment $.99! Yes! Only 4995 payments of $.99! Order now!
 
@MikeyB Disabled delayed ACK's now, the effective transfer rate doubled on sequential i/o
 
0
Q: How to analyze system calls when your disk is in read only and strace output is "Bus error"?

ompemiWe have a HW problem with the disks, that made all the mount points to be read only. Output of dmesg: end_request: I/O error, dev sda, sector 15574609 sd 0:0:0:0: SCSI error: return code = 0x00040000 We want to analyze a program that is currently running, because it should have died when he co...

... can you catch SIGBUS?
...... and how deranged would you need to be to do so?
@MarkM I have primary and secondary (mirrormode) LDAP servers. The primary is dedicated to LDAP, the secondary shares with a DNS server. Technically they're peers. In practice ldap01 is the "primary" and the one you connect to when you need to do stuff :)
@MikeyB They provide Network Solutions - you know, as a middleman. You give them $100, they give NetSol $50 and you get a domain name
 
5:35 PM
@voretaq7 You say "they" but the 'Contact' page says it's a one-person shop.
 
@MikeyB Schizophrenia.
(and startling lack of professionalism. Even when I was a one-person shop you got an IVR menu, voicemails, and generic contact addresses)
 
@ShaneMadden Jeff has tidied up
 
I'm laughing so hard I'm crying at the first comment
 
@Iain Nice!!
@Iain Thanks for getting in touch with him to take care of that
 
@voretaq7 NOT AD. DOESN'T COUNT!
 
5:49 PM
@ShaneMadden NP there are 13 questions tagged that need to be retaged , and it's all done
 
@Iain Nice, I'll hit those when I get back from lunch if they're still there
 
@MarkM Oh now don't be bitter just because I see through AD for what it really is - a chintzy kerberized x.509 directory server.
 
@voretaq7 I'm not bitter, and you left out the part about the magic at the center.
 
q/“Materials: rubber, latex, whatever you use”

I use stained glass. How’s that for a surprise?/
@MarkM um
feces != magic.
 
@Iain Just did 6, should let the front page sit a minute before doing more...
 
5:57 PM
@voretaq7 It is if you put them in a black box at the center of another black box.
 
@ChrisS oh just retag. who the hell uses the front page.
 
@voretaq7 I do!
 
@MarkM Microsoft has been doing that for years. DOS -> Windows -> Win9x -> WinME -> WinNT -> WinXP -> WinVista....
the same turd is still there. Waiting.
@ChrisS freak
:P
 
@voretaq7 So, Win 2k is feces free?
 
@MarkM no, it belongs in between NT and XP
 
6:00 PM
close this bitch:
-1
Q: VirtualBox: trying to boot Win XP in Safe Mode: how to do ctrl-alt-delete?

TimI am trying to boot a Win XP Pro VM in Safe Mode in Virtual Box 4.1.4 I used DISK2VHD to create the VHD. The VHD is 95GB on disk but VirtualBox reports it as 145GB. The boot hangs, so I'm trying to use Safe Mode so see what's up. Is this possible? To boot Win XP in Safe Mode CTRL-ALT-DELETE ...

 
I think it's unfair to WinNT to imply that it contained any of the most egregious taint that WinME picked up in Tijuana...
 
In all fairness the original Unix turd is still there too, but they went all Mythbusters and polished that poop!
@ChrisS Fat32Bot got a virus in Tijuana and had to be rebooted?
 
@ChrisS heh "taint"
 
posted on October 05, 2011 by Matt Simmons

I don’t make a habit of posting job offerings here, because they’re interpreted as noise so frequently, but I’m making an exception in this case. Tony Del Porto, the long-esteemed sysadmin who has held together various USENIX conference networks throughout the years, is leaving USENIX for another opportunity. This means his position is available. The [...]

 
@voretaq7 Xenix?
 
6:08 PM
@ChrisS I was going to go with MULTICS or ITS. But sure.
Linux still has the taint of Minix upon it. No way to remove that stain of dishonor.
 
@ChrisS cheers
 
It will forever remain "Some dude's computer science homework that escaped the lab"
 
Meh; most great software started as someone's innocent side project to dabble in something or other.
 
Someone's angry
-3
Q: tired of having questions closed -- please refine your FAQ

TimIs it not reasonable to assume that if there's a TAG here, a question relating to the subject of that TAG is "on topic"?

 
@Shads0 Proof by counterexample :p
 
6:19 PM
What's funny is, he has no closed questions, unless there's deleted ones I can't see.
 
@Shads0 I don't actually see any Closed Questions on his account.... Maybe he's got more than one?
 
no other SE accounts, has 2 other questions from Sept and July so dun think it's an 'anon' account
 
Does Windows 2008 R2 have any builtin checksum utilities that anyone knows of?
 
well to check a sum, subtract one of the numbers you're adding, from the answer, if you get the other number that you were adding, your sum is checked!
 
@Shads0 do we see migrated questions ?
 
6:27 PM
/me puts on some steel toed boots for some nuts kicking
 
@Iain I'm sure under (10K is it?) can see migrated/closed, just not baleeted ones
 
he may have had questions migrated and thinks they're deleted
 
Unless we're just misunderstanding it and he means in a general salesman like "Are you tired of having questions closed? THEN BUY OUR TAG PRODUCT NOW!!"
 
is gone
 
@Iain dance?
 
6:36 PM
a little geek jig
 
KYLE!
I'm VERY disappointed in you!
Everyone knows you wear gof cleats when going nut-kicking.
 
So...much...off topic
-1
Q: NAS for Windows domain

stupid-philWe have a Win 2003 DC and another Win 3003 server. (In fact we are part of a larger Win network). We have a mix of Win & Mac clients. We need to add some storage. 3TB+ usable in RAID 5 I've been looking at NAS solutions such as the Synology RS411 (i.e. lower priced models). What I can't se...

 
@voretaq7 No, that's for nut-stomping
 
@Holocryptic There's a difference?
 
@voretaq7 kick != stomp
 
6:37 PM
I mean when I kick I try to get a god solid Karate-style impact with my whole foot.
If you're a kick-with-the-toes man I'd suggest a nice pointy-toed dress shoe. (with a steel cap)
 
@voretaq7 My kicks vary depending on body angle. I also used to do Tae Kwon Do when I was younger, so I'm very good at kicking.
 
@voretaq7 You forgot the obligatory hidden blade in the tip
 
Holo is correct, I was trying to express my self more pointedly
 
@Shads0 That's part of the advanced class - it takes extra toe dexterity to flip the release and retract springs at the right moment.
@KyleBrandt @Holocryptic Golf cleats have points. Lots of 'em :-)
 
@voretaq7 screw that, just give me the hidden blades of AC2
 
6:40 PM
Good for making sure the old duffer has a nice, solid connection to Earth during that thunder storm!
Golf (n): A sport of tempting fate by wearing the ugliest clothing you can find, combined with metal shoes. Players stand out in open fields holding a metal rod aloft - Last one to be struck by lightning wins.

Golf (v): To tempt fate.
This has been Roseanne, your guide to the world of facts.
 
@voretaq7 fats?
Oh my God, this backup product sux
 
@Holocryptic that too.
@Holocryptic Legato NetBreaker?
 
@voretaq7 robobak.com DO NOT WANT
 
Anybody know of a DB Datatype tutorial for dummies on the net? (Specific to SQLite if possible, otherwise anything would be a good start)
 
Not for SQLite, but a good start
 
6:50 PM
What I wouldn't give for a computer-brain interface so I could just download that crap..
 
@ChrisS The vids are a mishmash of stuff, but maybe you'll find something there
@ChrisS They do live streams almost every night at midnight
 
@Holocryptic never heard of it. Not a good sign :P
@ChrisS No tutorials, but sqlite.org/datatype3.html is the SQLite reference
are you having specific datatype fuckery?
 
@voretaq7 Its not. They deal with windows backups in any case. Not well, mind you...
 
@Holocryptic Bacula deals with Windows backups. Not well, mind you…
 
@voretaq7 These guys are fucking horrible. I get backup errors, but it doesn't tell me where it failed. You go to the KB, and it says the error is usually caused by a file being locked or in use. Motherfucker, you use VSS so that shouldn't be an issue!
 
7:07 PM
If you guys could hear the venom that just came out of my mouth toward Microsoft support, you would all be like proud parents.
 
@MarkM Ah, you should have recorded it so we could download and listen
 
Technical Lead: "May I see the NPS server, please?"

Me: "NO YOU MAY NOT. YOU GUYS HAVE FUCKED AROUND FOR 10 HOURS BETWEEN YESTERDAY AND TODAY. THE NEXT PERSON THAT TOUCHES MY SERVER WILL BE THE PERSON THAT YOU ESCALATE MY PROBLEM TO."

Technical Lead: "But..."

Me: "STOP. STOP TALKING. STOP TALKING RIGHT NOW. YOU HAVE WASTED ENOUGH OF MY TIME."
5
 
@voretaq7 No, I can install, upgrade, backup, restore and otherwise maintain a DBMS; but I suck at DB design. Screwing around with something for my website and just trying to get a grasp of the concepts.
 
@ChrisS Don't do it. It's thinking like that, that caused Anakin to become Vader.
 
@MarkM Once you start down the path to the dark side, seduce you it does. =]
 
7:15 PM
I'll cut your fucking limbs off.
I think that's the exact quote from Obi Wan, right?
 
Hey baby, Yoda one for me #starwarspickup
 
@MarkM What is going on that built up that kind of rage?
 
I recently swapped out the SSL cert on our NPS server that's doing RADIUS for our wireless clients (a few thousand students). OS X, Android and iOS all play fine with the new cert. No Windows OS does, though. Their NPS guys keep saying "there is a problem with the certificate" and I keep saying "Ok, what is the problem, so that I can buy a different certificate that is compatible." "Oh, we don't know."
Microsoft published a document detailing what is necessary for a 3rd party cert to be used for PEAP on a RADIUS server. The cert I have meets all of those requirements.
They keep trying to pass the buck to DigiCert, but I won't let them until they tell me what exactly is wrong with the certificate and why it is incompatible with NPS, even though it meets all of the published guidelines.
 
So they're basically just dicking you around at this point.
 
Ya
 
7:20 PM
sucks
 
@MarkM Was the last certificate 3rd party and several years old?
 
(.Y.) That should help
3
 
@ChrisS It was one year old, and yes. This party, also from DigiCert
We prefer to use 3rd party rather than internal, because we don't control our students' computers so we cant push out an internal one anyway
 
Did you try running the new and old cert through OpenSSL to see if there's any difference besides the dates and hash codes?
openssl x509 -text -in certfile.crt usually works
 
I didn't. It wasn't a straight renewal, it was a totally new certificate. The old one was only 1024 bit. The new one is 2048.
Should still work though, it caused our OS X users to see a prompt asking them to accept it the first time they connected after the renewal. Windows clients just choked and died
 
7:30 PM
Interesting... The cert should still be substantially the same, similar extensions, subject, etc.
 
I'm assuming it's because the new certificate is a wildcard but there's no MS documentation saying that it won't work with one.
This is one of those times where I'd give anything to be in corporate america where I'd have control over all of these machines and I'd just push down new client certs and everything would automagically connect.
Instead we have students running around screaming OMGZ THE HOLE INTERNETZ IS DOWN
because they can't get on wireless
 
Probably a dumb question, but now I'm sucked in... The cert has the extended usage for both Server Auth and Client Auth; not just a typical Web Server SSL Cert (which are sometimes just Server Auth)?
 
Ya
Has both
I see random technet posts where people say that wildcards bomb out for no reason for some MS services when they should otherwise be fine but there's been no official confirmation from MS about any of it
And the threads seem dead with no resolution
 
@MarkM Yeah; was just looking over the same...
 
As soon as VeriSign gets done processing my new cert request in 1-2 days (ugh) we'll see if it was the fact that it's a WC or not.
 
7:39 PM
MS's crypto stack is full of crazyass things like that.. ISA server chokes on v3 certs, but works fine with v2 certs (even in the TMG 2011 version)
 
wow
I might just do direct LDAP auth on the wireless lan controllers
I don't know
this is getting out of hand though
 
It takes VeriSign days to issue a cert?
 
Unless you're one of their super premium customers, it's "2 days or less"
We use DigiCert for everything, but the boss said he would spring fer VeriSign for this to eliminate the vendor as an issue
 
I see. I usually use StartSSL for anything less than EV. Takes about 5-15 minutes.
 
digicert is that fast too and they allow unlimited dupes of their wildcard plus certs and each dupe can have up to 10 SANs. Really awesome and flexible licensing for the money
 
7:52 PM
Will have to check them out.
 
We had some random certs from thawte and verisign floating around and consolidated everything into the one wildcard plus a couple of years ago. it saved a boatload of money
 
We've got an internal CA for most things, since we control all the computers on our network...
 
lucky
We have a microsoft enterprise ca for ldaps in AD, but thats about it
I'm seriously considering making students install our root certificate as part of the wireless setup process and just cutting out all of the 3rd party crap so that it's one less finger for microsoft to point
 
That'd be humorous if it wasn't serious.
 
some schools do that, believe it or not
I know of at least one sizable state school in MA that has open wireless, but all users need to install a VPN client and can't get off of the wireless no-access vlan unless they have an active VPN session
I was like O.o
That's the most round about way ever to encrypting traffic on a network that you control
 
8:05 PM
When your only tool is a hammer, everything looks like a nail...
 
8:17 PM
Bloody hell.
22
Q: Destroy a hard drive without proper equipment

Konrad RudolphI need to make two hard drives unreadable. Unfortunately, I have some constraints which make this harder than usual (in particular, they rule out the answers to other questions): I don’t have a computer to mount the drives and erase them (weird, right?) I don’t have a strong magnet I don’t have...

The top answer sucks.
sigh
 
@BartSilverstrim Wha? Is the OP too much of a scaredy cat to just microwave the thing for like 90 minutes?
 
The drill answer should be near the top.
I mean...geez. Sometimes it's like that area is run by fifth graders who think they've discovered how to turn lead into gold using yellow paint.
 
@BartSilverstrim Wow 20 answers, and looks like 19 bad ones (haven't read them all yet however)
@jscott I don't think that would actually erase any of the data on the platters, though it'd be an interesting experiment.
 
It's fun with CD/DVD's. But it stinks.
 
@BartSilverstrim Beat me to it...
Never tried it with an hard disk. But 90min of anything should make for some microwave "fun".
 
8:26 PM
Very good chance it would be one helluva light show.
 
I think the microwave would die before 90 minutes was up.
 
@jscott isn't the case a faraday shield with RF gaskets
 
It probably wouldn't be much of a lights show either. Large chunks of metal don't do anything fun in a microwave.
 
@ChrisS Yes, that's the goal ;)
Dead microwave, that is./
 
@ChrisS I can put metal in my microwave
 
8:28 PM
Superuser is like one big WTF, and the Exchange format lets the inmates run the asylum.
2
 
@Iain Depending on the shape of the metal it can damage your microwave. Round and spherical shapes are pretty safe however.
 
@Iain: your microwave is English, though, isn't it? Probably doesn't work on American fucked-units.
 
@BartSilverstrim Want me to cast the close vote? >:D
I WTF'd when I saw the question first off anyway.
 
@ChrisS it's a NEFF combi oven/microwave - any metal is safe providong it is in contact with a shelf or the base
 
The fire barrel is the best answer I see... Though it's going to be illegal in many city areas.
 
8:30 PM
1
A: Destroy a hard drive without proper equipment

bizso09send it into the sun with a space shuttle. I think the heat there will destroy the circuits.

-_-
Method Creativity: 9/10. Practicalty: 0/10
 
@tombull89 Practicality: -10/10
 
We used to be able to melt disk drives in a furnace now we can't because of toxic emissions
 
Yeah, what's he thinking? The space shuttle is cancelled now! 6 months ago, sure!
 
I accidentally the close button.
 
There are a surprising number of "hard drive microwave" videos on youtube... All disappointing, so far. Guess I had higher expectations for the experiment.
 
8:34 PM
@jscott CD in a microwave is much more entertaining.
Or, surpisingly, Soap.
 
Dammit.
That "video" doesn't want to keep refreshing, but it's sending a constant stream of requests to the server. WHY!? @#$%^!!
(referring to video on our website of the internal-camera-reverse-proxy-thing)
 
@BartSilverstrim What was the link again?
@MarkM I'm gonna assume that there's all kinds of versions of windows involved? XP had some janky restrictions on signing algorithms, but for student systems, I bet you're seeing the issue on plenty of Win7..
 
@tombull89 Bah, grapes in a microwave are much better than CDs.
 
The sample snippet the consults gave for pulling video straight from the camera without the cameras goofball interface apparently uses a series of JPG's, making it "animated".
And I see the requests hitting the server for new images.
but the @!#% thing isn't refreshing on my side outside the network.
 
@BartSilverstrim I think the js is the culprit. It's updating, but very slowly. Images don't seem to be coming back quick enough for them to display.. they're taking just under a second to respond.
While just F5'ing on athensasd.k12.pa.us/video/-wvhttp-01-/… works great
 
8:43 PM
Athens PA, is that anywhere near Milan?
 
Yes. (@aaron)
 
I knew someone up in Towanda
(and Sayre)
 
On purpose?
 
yes
 
Making the display size smaller doesn't help either.
 
8:48 PM
setTimeout(show, 1000 / 5); sets it for 5 frames per second, despite the framespersecond variable, heh. Try cranking that back to like, 1. The images are taking 600-900 ms to load for me.
 
I was wondering why there's a framespersecond variable that isn't used anywhere else O_o
I just adjusted it and realized that it...didn't go anywhere. WTH?!
 
Yeah, it's meant to be that 5. heh.
 
Why is it formatted as 1000/5 instead of 200?
 
Whichever lazy programmer changed it from 1000 / framespersecond to 1000 / 5 was really lazy. And/or didn't know division.
 
Works fairly well for me; though I feel creepy watching high school students via Internet camera...
 
8:52 PM
... I'm looking at the documentation and it's just milliseconds...so...there's no reason.
@chriss: it's not intended to be creepy. It's supposed to be for watching sports events in a small town without a professional league to follow or their own NASCAR event.
It's only creepy if some part of you wants it to be creepy.
2
:-p
 
No audio?
 
No audio.
No audio from the camera.
Originally it was a security camera thing. Then it was a "stream it to a TV outside the gym so people out there can follow what's happening." Now we were asked to see if we can get it going to the web.
Now I'll have to see if I can get the "chick cam" to work in a method similar to this so it can be reverse-proxied through our website. And before you comment, it really is a bunch of chicks hatching from eggs in a kindergarten room. Chicks as in chickens. Don't get any ideas.
 
Some fancier js could probably cache the incoming images a couple seconds in advance, instead of treating each image as too old as soon as it comes in when it takes >200ms to fetch
 
I'd have to scrounge around to see if I could find something that would do that.
 
Or throw it on SO and see if the code factory obliges ;)
 
9:03 PM
Maybe. I could see if they'll do it or hammer it.
I think they'd hate to do it but they'll be compelled to reply.
 
Indeed. I've got an idea of the shape of it - juggling DOM objects into the display DIV - but I'm too clunky on the web dev side of things to put it all together very well.
 
@BartSilverstrim 2 Damn, I wish our gym was that nice.
 
That's a new gym.
 
@BartSilverstrim Yeah, mines about 45 years old
hmm, I bought a switch on ebay and it came with no power supply, great.
 
@ChrisS schemaspy.sourceforge.net <- good tool for getting an understanding of what's in a database and how the objects are related
@Jacob CAR BATTERY!
 
9:14 PM
@voretaq7 err how?
 
Fucking Cisco sipuras. #dieinafire
 
@voretaq7 12 volts vs 7
 
@Jacob RESISTOR!
 
@voretaq7 really?
 
::WALLOPS @Jacob with a Circuit Design textbook::
 
9:16 PM
@voretaq7 wirewound ceramic dip
 
@Iain I'd also accept Iron-Carbon composite
(same great power reduction, slightly better heat dissipation)
 
@voretaq7 don't know that type - the larger ones I've seen /used have been wire/ceramic dip and if required fitted into a heatsink attached to a chassis
 
Well, posting the question to SO. See how long it takes for them to berate my programming ignorance.
 
@BartSilverstrim Link it and I'll upvote. Increase the perceived peer pressure for them to answer it ;)
 
@Iain they're basically fatter versions of the standard carbon resistor you see in LV electronics - they tend to heat less, but the afforded resistance is substantially lower because they're mostly conductive mass
 
9:24 PM
0
Q: Speeding up JPG "videos" pulled from a proxied web cam?

Bart SilverstrimI have a snippet of javascript that is used to pull a series of jpg's from a webcam that is inside our network. Right now it's being reverse-proxied through Apache2 and embedded in our website. The thing is that to keep the display from "freezing" with timeouts I've had to adjust the consultant'...

Suggestions on rewording welcome too. Or...well, I guess others can edit it.
 
but we're only talking a 4V drop on maybe a 2A load, so they'd probably be OK, and the DC engineers would probably much prefer the lower heat load
 
@BartSilverstrim s/milliseconds/seconds/
 
whoopsie.
thanks.
 
@BartSilverstrim Does that camera have no actual video feed URL?
 
I'm not sure if it is pullable remotely.
 
9:26 PM
@MikeyB Pictures!
 
@Iain Of course he COULD always go fancy with a DC::DC transformer too. Maybe something in a nice solid-state model with output regulation.... ah but where's the fun in that?
Switches like dirty power, right?
 
There's a built-in interface that does video, I think the code was used for internal "streaming" to a local system that displays to a giant TV out in the hallway.
So streaming it quickly with this javascript using jpg was acceptable, I guess.
I was kind of asked because I've done the most work with the CMS system and they wanted it on our website.
 
@BartSilverstrim Stream it with ffmpeg :p
 
I'll have to dig more for information on that camera and see if it can pull video, and then figure out how to reverse proxy it.
 
hey is @MarkM still around, or did the cops come to question him in the matter of the missing Microsoft monkeys?
And if the latter did they get the blood off the wall yet?
 
9:30 PM
@voretaq7 I'd probably knock something up with a 2N3055 as I have a bucket load sitting about
 
@Iain Dare I ask why?
 
They were being chucked out so I acquired them
and I used to be much more interested in home electronics than I am now
 
I suck and fail at life and will never have a cool job like this careers.stackoverflow.com/jobs/14140/…
 
@Holocryptic Pft, you could rock that crap - just gotta get in a role where you can start to mess with some of that stuff. And I'd think twice about inheriting responsibility for the tumbeasts, anyway ;)
 
9:46 PM
haha, yeah, that's a big problem. I haven't gotten to a place yet where I can play with cool things.
That was part of why I moved to this company, it's just been slow in developing
 
I was thinking it looked interesting but I don't have experience with scaled websites or ruby/python...git...
 
And you're also right. Scaling systems like that probably means cleaning up a bunch of cruft from previous implementations
 
Worry not, im here
 
@MarkM O THANK GOD! My heart was all aflutter wondering where you went!
 
There was a suggestion on SO to use http live streaming, but the tutorials I'm finding look like they are for "take video XYZ, encode it, chunk it, then serve it" as opposed to "here's a live feed, encode it, chunk it, serve it on demand"
 
9:48 PM
I just got home from work. Tomorrow is a new day to deal with a new ESL Microsoft support guy.
 
@MarkM They speak Engrosoft?
 
Ya
 
@BartSilverstrim Yeah, that's what I meant with 'Stream it with ffmpeg :p'. I've no idea how to actually do this, but I'm imagining some sort of situation where you're reading from a socket or something that only gets populated when there's readers.
 
Anyone know how many times you need to escalate a support case before you get someone within 2000 miles of your current location?
 
Am I wrong here? (see comment)
1
A: Increasing capacity of RAID5 array

Shane MaddenLinux MD software RAID can add disks to a hot RAID-5 array (mdadm --grow), reshaping the data on the fly. Don't proceed until the reshape finishes (cat /proc/mdstat). You'd then need to expand your filesystem to fill the array, which, depending on your filesystem, will likely need a full, offli...

 
9:50 PM
I'm not sure that would work well. I'd have to find a way to grab chunks of video, cache it, encode it, chunk it, serve the videos...and have it do this on demand.
 
@BartSilverstrim Yeah, it's a non-trivial job.
 
Pretty sure a geometry change needs a full fsck for extN
 
I'm not even sure where to begin architecting something like that with gnu software.
@mikeyb: it asks for a password.
i.e., password protected camera...
 
@BartSilverstrim Yeah, couldn't hurt to restrict the ProxyPass down to the minimum. What you get it working. But you probably knew that already.
 
9:52 PM
Yeah, more to dig around in.
But at least it's password protected right now :-)
 
@BartSilverstrim The javascript for the camera's actual "live" viewer is… special.
function next_frame() {
	if(intervalTime == null || isNaN(intervalTime) || intervalTime <= 0) {
		next_frame2();
	} else {
		setTimeout("next_frame2()", Math.min(intervalTime, intervalTimeMax));
	}
}
function next_frame2() {
	frameCount = frameCount + 1;
	document.getElementById("live_img").src = tsessionObj.getImage();
}
Look familiar? They do the same damn thing.
 
And since the proxypass doesn't have rewrite rules in effect, when it references local addresses it doesn't work. Looks like that discourages just using the /video link.
 
Hey...
 
@mikeyB: pulls images one at a time to serve?
 
Oops
 
9:56 PM
@MarkM At least once more, miss swan.
 
This might work...
sourceImage = "http://www.athensasd.k12.pa.us/video/-wvhttp-01-/image.cgi?v=jpg:640x480&seq=1";

function show() {
        document.getElementById("video").src = sourceImage + Math.random();
}
document.getElementById("video").onload = show;
document.getElementById("video").onerror = show;

show();
 
Let's see, @mikeyB
 
It's not gorgeous but it takes care of the by-the-time-an-image-arrives-its-expired problem
 

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