Root Access

ekaj

2:42 AM

I can't figure out how to close a window in PuTTY >.>

Bob

@ekaj exit? :P

You can either close the PuTTY window (click the X, or Alt+F4, etc.), or close the connection from the remote end.

exiting or otherwise terminating the shell tends to work.

ekaj

I know that, I meant cancel the installation of a program.. it popped up a window with only an "OK" option

...so I just installed it anyways, won't hurt =p

Bob

o.O

@ekaj Ctrl+C?

ekaj

nope, or X, or Q

Bob

@ekaj This is why you do everything in a screen session.

Ctrl+d, d to detach, then just kill the process :P

ekaj

2:47 AM

I'm not worried about it, I could have just reset the connection

I'll have to read about what a screen session is

so all you do is screen and type ctrl+d when it screws up?

hello :)

hello

halo

@ekaj typing ^d will keep the process in the screen running. typing ^a k will kill the screen and process in it :)

ekaj

ahh alright, thank you

Trying to figure out basic things like that, remember what the colors for ls mean, etc

Gear54rus

2:57 AM

btw after ^d you can issue 'screen -ls' to see open but detached session

hehe

and screen -x <number> to re-attach

can someone (besides therapist) help me with this?

2

Q: Multiple Windows installers on a USB stick

I've recently got my hands on one of those SanDisk Extreme 64GB sticks and started tinkering with it. During this story, please keep in mind that this is a model where removable bit is set to 0 (which means Windows sees all its partitons by default - each is shown as a single disk in explorer). ...

Bob

@ekaj Ctrl+d followed by another d to detach

And then you can screen -r to reattach

@Gear54rus I've always used -r o.O

Gear54rus

I'm not sure what the difference is. Screen has tons of parameters AFAIK.

Bob

@Gear54rus Consider YUMI: pendrivelinux.com/yumi-multiboot-usb-creator

But this scheme won't work if you want a UEFI install.

You'll just end up with a BIOS/CSR install, which, frankly, is terrible in this day and age.

Gear54rus

@Bob yeah, I have. That's why I am asking this in the first place :) Yumi is something I use to configure syslinux. The issue is with bootmgr, not with syslinux

Bob

@Gear54rus IIRC YUMI can load ISOs directly.

I believe it does a chainload through some variant of GRUB.

Gear54rus

3:11 AM

@Bob hmm. I just recalled that I saw that function there and maybe tried it. I'll doublecheck right now. Thanks.

Bob

—————– Bootable ISOs —————-

    Try an Unlisted ISO (SYSLINUX)
    Try an Unlisted ISO (GRUB)
    Try an Unlisted ISO (GRUB Run from RAM)

Gear54rus

So I guess it would be better to run from RAM? or am I missing something

Bob

@Gear54rus Not sure.

I've fiddled with this for an XP boot in the past, but never with 7.

I'd say try the non-RAM options first.

The SYSLINUX option is new, actually. Last I used it, only GRUB was available.

Gear54rus

I'll try all 3 :)

yeah. they changed it so that it uses GRUB to chainload SYSLINUX and therefore both are available. It was done for better compatibility with older PCs AFAIK

Bob

@Gear54rus They always loaded SYSLINUX, but chainloaded GRUB specifically for the ISO boot (both were always available). So they flipped the order? Interesting.

Gear54rus

3:16 AM

yeah, I think. After that change it started to boot on my older laptop :)

Bob

o.O

How old are we talking?

Gear54rus

well not prehistoric. Asus N61JA. Is about 4 years maybe.
Above is an assumption based on noticing GRUB.exe in the root folder of YUMI-enabled drives. After that change all boot problems for this laptop went away. Before that it showed boot error.

Michael Frank

@Bob How old would you consider an 'older woman'?

Bob

@Gear54rus Surprising Syslinux won't work on it.

I've used that with a 2009 laptop, no problems.

Gear54rus

1st try (Unlisted ISO via syslinux): Error: YUMI could not find configuration file. Proceeds to delete every single file it created :D
2nd try (simple GRUB): Installed. Checking...

Not sure what to make of that... Says:
`Booting 'Name_of_iso'
find --set-root --ignore-floppies --ignore-cd /multiboot/ISOS/Name_of_iso
Error 15: File not found`

The path is right if the partition is right

Bob

3:28 AM

o.O

Gear54rus

Is there any way to refer to partition GRUB booted from (like fs or boot in SYSLINUX)?

In its menu.lst. Quick search does not yeild an answer. Though I found the commands to set root

Bob

I have no idea, sorry.

Gear54rus

Thanks for the help. Much appreciated :)

ekaj

rm -rf /* --no-preserve-root

Gear54rus

Tried that. did not work

ekaj

3:36 AM

I'm gonna try it on my ec2 instance..

Gear54rus

:D

ekaj

Someone did it before, I think it just removed their SSH and bricked their box essentially

yup

DragonLord

Linode announced a massive revamp of its servers

linode.com

Gear54rus

ahh yeah. SSDs

ekaj

hi

I can't type the same thing twice >.>

Gear54rus

3:37 AM

I've yet to have something I can use it for though.. Sounds very attractive

ekaj

It was on HN a few days ago

Gear54rus

Yeah, cool site too. Simple and effetive.

DragonLord

My server's been migrated. I'm concerned about the drop from 8 CPUs to 2. While there will be far less contention (meaning each processor core will be much faster when the host is under load), I'm concerned about my server's ability to reliably serve more than 20 requests per second.

ekaj

linode or HN?

DragonLord

Benchmarks indicate that the server can currently handle about 30 requests per second. If contention comes into play (such as during peak hours), this number may be much lower.

The impact of contention should be much less, though.

(this is for blog.fierydragonlord.com)

ekaj

3:40 AM

I haven't updated my blog in a while...

DragonLord

The bottleneck is the CPU, with slow page generation time (and yes, a PHP accelerator, APC, is installed).

Perhaps I should blame the Serendipity CMS for this?

Bob

@DragonLord 30 per second isn't much :S

ekaj

Depends on how often the site is frequented

DragonLord

The same benchmark indicates that the server can handle more than 2500 requests per second to the much simpler fierydragonlord.com.

Gear54rus

@ekaj both :)

DragonLord

3:46 AM

And no, SSL isn't the bottleneck. Disabling SSL didn't measurably increase performance.

Before the migration, performance varied from 20 to 100+ requests per second depending on the host load.

The main issue is whether I can rely on the server's ability to handle a large number of requests should it get hit by the Slashdot effect...

@ekaj, @Bob, should I be concerned about scalability?

I could disable SSL on all but the admin pages, making way for Varnish caching, but I've had trouble setting up Varnish...

Any way I can tune PHP for faster performance? I've already adjusted the kernel, Apache, APC, and PostgreSQL to take advantage of the extra memory.

Disk is definitely not the bottleneck.

Bob

@DragonLord I try to avoid PHP :\

Are you using Apache?

Consider Nginx + PHP-FPM.

DragonLord

Yes, Apache 2.4. Apache is definitely not to blame for this.

Bob

@DragonLord Nginx has been proven to be faster than Apache in all cases.

DragonLord

Once again, it's PHP and slow page generation time.

Bob

@DragonLord Are you using mod_php?

DragonLord

4:01 AM

Yes.

Bob

@DragonLord Then Apache (specifically, mod_php) is to blame.

If you must use Apache, at least use it with PHP-FPM.

DragonLord

What does it take to migrate to PHP-FPM?

I don't want to switch to Nginx because it would require extensive reconfiguration of the server and all of its subdomains.

Bob

IIRC mod_php requires Apache to run with a prefork MPM.

Though that really affects memory usage more than CPU...

@DragonLord Turns out, as far as CPU performance goes, you'll probably want to look more into disabling .htaccess overrides :\

mod_php + prefork is really worst for RAM, but not too hard on the CPU (perhaps even slightly better)

DragonLord

The real issue is that Serendipity is not designed to run on anything other than Apache. It will not work on Nginx or any other web server software. s9y.org/11.html#A7

Bob

@DragonLord Can you disable .hetackess (AllowOverride None)?

DragonLord

4:08 AM

S9y requires .htaccess.

> You should also verify, that your Apache takes notice of the ".htaccess" file in your document root (Override All), otherwise s9y won't be able to run properly.

Bob

:\

You could move all those rules into the main config files.

Some benchmarks found that Apache was spending at least 33% of its time searching for .htaccess files, and a speedup of 100% with them disabled. Though that was with simple scripts - if your scripts are expensive then that's a different story.

You could also consider, say, CloudFlare.

DragonLord

> if your scripts are expensive then that's a different story.

That's the real issue.

Benchmarks indicate that the APC opcode cache nearly doubled performance.

Bob

@DragonLord Then cache the produced pages.

Don't generate a new page for every request.

DragonLord

Like I said, what do I need to do to move to PHP-FPM?

(I'm running openSUSE 13.1, if that helps.)

Bob

@DragonLord If you're under no RAM pressure, then don't bother.

DragonLord

4:15 AM

The server has 2 GB of memory and is running nowhere near that limit.

I can certainly just type zypper in php5-fpm to install it...

Bob

@DragonLord Again, don't bother...

Switching to PHP-FPM and the Event MPM would mostly help with RAM usage.

It might actually be (slightly) worse for CPU.

Gear54rus

@Bob So the first error was caused by spaces in the filename. Grub-from-ram wont work because iso is 3+GB and cant fit. Now without spaces and without RAM it works but A required CD/DVD drive device driver is missing message is shown. Maybe you know something about that message? I'm not sure what does this even mean :(

Bob

o.O

@Gear54rus syslinux.org/wiki/index.php/…

Gear54rus

This haunts me whenever I am able to boot windows installer by non-conventional means :D It's like hey, congrats - here's your installer. Still wont work tho

Bob

ehh.. not the same thing

Gear54rus

4:22 AM

oh wow. Its close enough, gonna try it. Thanks

Bob

@Gear54rus Good luck!

I really have no idea if that's related or not.

@DragonLord You really should be looking into caching the generated pages :P

DragonLord

@Bob ...and how do I do that?

Bob

@DragonLord External service? CloudFlare is decent.

6

Q: How to cache dynamic PHP page

How to cache PHP page which has mysql query. Any example will be great and helpful.

php caching

If you really want to DIY, which will probably break if you get slashdotted anyway, consider a caching reverse proxy.

@DragonLord I've actually got a Ghost blog (entirely empty at the moment) running on nodejs happily serving up 160 req/s. 'course, that eats up a whole rather-beefy CPU core (node is single-threaded).

ekaj

What does "ssh root@box /bin/bash" do?

Joomla caches pages automatically

Bob

Serendipity is heavy. Or your server is underpowered. Or both.

@ekaj Logs into box as root and runs /bin/bash

ekaj

4:37 AM

It says that if you do that commands will not be recorded?

Bob

Huh?

ekaj

12

Q: Linux command logging?

Recently someone broke into one of our linux servers as a non root user. An excerpt from .bash_history: [...] perl perl set +o history set +o history set +o history passwd sdfsdf passwd exit I assume that set +o history toggles command logging to .bash_history Is there a way to make it so hi...

operating-systems linux logging

3rd comment on answer

DragonLord

@Bob: I think I have a solution.

The "Emoticate" plugin, which automatically replaces text emoticons with images, is a huge performance drag.

Bob

:S

DragonLord

That plugin has been disabled and the performance jumped from 29 rps to 51 rps.

Bob

4:41 AM

@ekaj Ask the commenter?

ekaj

YOU

Bob

Interesting. I can hit 170 req/sec on the nginx reverse proxy o.O

Wait, no, that's because of the different req size.

Bob

4:55 AM

@DragonLord Now you have me trying to enable caching :P

51 is decent.

Still won't work too well during a /., but not much short of CloudFlare will.

DragonLord

I'm surprised at how a single plugin is dragging down the entire server...

Bob

@DragonLord As a programmer, I am not surprised. At all.

Have you see the OpenSSL "rampage" probject?

Now consider it's pretty much standard on any *nix server.

Yea.

DragonLord

5:07 AM

Just posted a bug report: board.s9y.org/viewtopic.php?f=3&t=19864

Bob

@DragonLord Heck, it seems like bad design altogether.

Why would a plugin for converting emoticons from text to image need to run on page render?

Why not run it on page save?

Bob

5:21 AM

@JimmyHoffa Do you still need Phoebe for anything? I might wipe it soon.

DragonLord

@Bob, I've also changed the number of posts on the front page from 15 to 10 for performance.

Ever wondered why Sony devices sometimes act oddly when it comes to USB? You might want to look at my blog post: blog.fierydragonlord.com/index.php?/archives/…

Bob

@DragonLord o.O

"For performance" sounds like a very bad reason...

DragonLord

@Bob: most blogs don't use more than 10 anyway. The default setting of 15 really isn't optimal.

Bob

@DragonLord I have yet to come across a host that actually requires power negotiation :\

DragonLord

@Bob: Given likely variations in page content and server performance, the current maximum performance achieved (54 requests per second) should mean that I can rely on the server reliably handling a sustained 30-35 pages per second. Am I right to say this?

Bob

5:33 AM

@DragonLord Most likely, yes.

I'd still recommend you set up some better caching if you ever expect a lot of visitors, but that may be painful to do so.

I just gave up - Ghost returns a max-age: 0, and I can't be bothered configuring nginx to ignore Cache-Control responses.

@DragonLord It's not that hard to test, actually.

Heck, I can test it if you want :P

DragonLord

I've configured Linode to warn me (by email) if CPU usage exceeds 100% (one fully-utilized core on the dual-core server) for more than an hour or so.

Bob

Now I'm curious.

@DragonLord Do you pay for bandwidth?

DragonLord

@Bob It's a non-problem. The quota is 3 TB of outbound traffic per month (inbound traffic is unlimited).

Bob

@DragonLord In that case - do you mind if I run a benchmark? :P

DragonLord

Go ahead.

Post an image with the results once you're finished.

Bob

5:37 AM

@DragonLord It'll be abs -n 1000 -c 35 https://blog.fierydragonlord.com/

Basically, 1000 requests, 35 at a time.

Urk - I don't actually have abs o.O

Hm, looks like Debian built SSL into ab

DragonLord

Try using siege: joedog.org/siege-home

That's the benchmark I use to test performance internally

Bob

bob@phoebe:~$ ab -n 1000 -c 35 blog.fierydragonlord.com
This is ApacheBench, Version 2.3 <$Revision: 1554214 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, zeustech.net
Licensed to The Apache Software Foundation, apache.org

Benchmarking blog.fierydragonlord.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests

Looks like you can sustain about 15 requests per second.

DragonLord

Can you clarify this?

It seems connection is the slowest part.

Bob

@DragonLord Hm?

@DragonLord Probably because previous connections are still waiting to be served, and it's hit the max limit Apache will accept at once?

19

Q: Definition of Connect, Processing, Waiting in apache bench

When I run apache bench I get results like: Command: abs.exe -v 3 -n 10 -c 1 https://mysite Connection Times (ms) min mean[+/-sd] median max Connect: 203 213 8.1 219 219 Processing: 78 177 88.1 172 359 Waiting: 78 169 84.6 156 344 Total:...

performance apache benchmarking

DragonLord

@Bob The maximum number of server processes is currently set to 64.

Bob

5:43 AM

Nope, can't even handle 15 per second:

bob@phoebe:~$ ab -n 250 -c 15 blog.fierydragonlord.com
This is ApacheBench, Version 2.3 <$Revision: 1554214 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, zeustech.net
Licensed to The Apache Software Foundation, apache.org

Benchmarking blog.fierydragonlord.com (be patient)
Completed 100 requests
Completed 200 requests
Finished 250 requests


Server Software:        Apache/2.4.6
Server Hostname:        blog.fierydragonlord.com
Server Port:            443
SSL/TLS Protocol:       TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256

@DragonLord Ok... I don't actually know for sure what the time breakdown means :\

@DragonLord Looks like 10/second is getting close to what it can handle (sustained).

DragonLord

Try again, the server has been reconfigured.

Bob

I'm judging this by the max concurrent requests without going over 1sec max time.

@DragonLord Worse.

DragonLord

It turns out MaxRequestWorkers was set to a mere 10. It's now 32.

Bob

Longest request time went up from ~1.3s to 1.6s (250, 10 concurrent)

Note that there's approx 35ms RTT delay (ping)

DragonLord

Can you repeat the test?

Bob

5:46 AM

@DragonLord Which one? The 250/15?

DragonLord

@Bob Yes.

Bob

bob@phoebe:~$ ab -n 250 -c 15 blog.fierydragonlord.com
This is ApacheBench, Version 2.3 <$Revision: 1554214 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, zeustech.net
Licensed to The Apache Software Foundation, apache.org

Benchmarking blog.fierydragonlord.com (be patient)
Completed 100 requests
Completed 200 requests
Finished 250 requests


Server Software:        Apache/2.4.6
Server Hostname:        blog.fierydragonlord.com
Server Port:            443
SSL/TLS Protocol:       TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256

Better.

Much better.

Most requests took only 600ms.

Anonymous

apache is deprecated

DragonLord

Can you try again with 500/32?

Canadian Luke

Is this a conversation I should read about? Are you guys tuning Apache?

Bob

5:50 AM

@DragonLord About the same.

bob@phoebe:~$ ab -n 500 -c 32 blog.fierydragonlord.com
This is ApacheBench, Version 2.3 <$Revision: 1554214 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, zeustech.net
Licensed to The Apache Software Foundation, apache.org

Benchmarking blog.fierydragonlord.com (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Finished 500 requests


Server Software:        Apache/2.4.6
Server Hostname:        blog.fierydragonlord.com

Anonymous

just use nginx

Bob

Longest is worse, but 95% within a second is good.

@PatoSáinz We've been through this. He needs .htaccess support. And it's CPU-bound, not RAM-bound (nginx primarily improves memory usage).

DragonLord

At that point, the server's CPU was saturated.

Bob

@DragonLord It's actually coming up as 50 req/sec, which is around your max.

And that was sustained.

Anonymous

@Bob nginx is built with concurrency in mind, it also takes advantage that for more than 5 years computers can perform two tasks at the same time

Bob

5:52 AM

@PatoSáinz Concurrency doesn't help when your CPU is already saturated.

Speaking of - both cores, @DragonLord?

Anonymous

@Bob why'd you saturate your cpu

DragonLord

@Bob Yes. I'm watching CPU load in htop.

Bob

@PatoSáinz Oh, I dunno (not even my server), maybe something to do with generating dynamic pages? :P

Anonymous

@Bob :p

Bob

The only way nginx would help here is by using it for caching. And Varnish is better for that.

DragonLord

5:53 AM

@Bob Yes, and PHP-APC is installed and enabled.

Bob

Nginx beats Apache for serving static files, AFAIK. And it's better for memory usage.

@DragonLord PHP-APC only caches PHP's compilation. It doesn't cache the generated pages.

Anonymous

just an idea, why not help your server a little more and use cloudflare?

Canadian Luke

@PatoSáinz He probably saw all the issues I was having with it

Bob

@PatoSáinz Already suggested that :P

Anonymous

@CanadianLuke what issues?

Anonymous

5:57 AM

@Bob damn, you're fast

Canadian Luke

I spent a couple days troubleshooting why Cloudflare wouldn't work, unless I disabled it, for my site

Anonymous

@CanadianLuke what was causing it?

Canadian Luke

Because my server was offline as I was physically moving it, my registrar took over the DNS again :P Nothing to do with CloudFlare

Anonymous

~~loll~~ ehem, haha

Anonymous

@CanadianLuke who's your registrar?

BeowulfNode42

6:00 AM

yes that is a lame registrar

on a separate note, I have to post this "mv *" link somewhere or my sides will explode superuser.com/questions/743270/…

DragonLord

I've got to go to bed. I really appreciate the help you've given, and I've gotten rid of a bad plugin in the CMS that was sapping performance like crazy.

BeowulfNode42

It even makes a play on words when you stay it as mv star

Anonymous

@BeowulfNode42 lol'd

DragonLord

Thank you very much. See you later.

Canadian Luke

@PatoSáinz CanSpace, for my .ca domain

Anonymous

6:25 AM

@CanadianLuke are you right-handed?

Anonymous

or actually, is anybody right-handed here?

Bob

@PatoSáinz Ya.

Anonymous

@Bob let's assume you look at a picture that is 1000*1000 pixels wide and tall, a blue square

Anonymous

in what corner would you look first?

Bob

@PatoSáinz o.O

What, uniform colour?

I probably wouldn't be looking at the corners at all.

Anonymous

6:28 AM

@Bob or just a picture, but with no clear subject

Bob

@PatoSáinz Even then.

Anonymous

I just want to know where do right-handed people have tendecy to start looking at

Anonymous

for me, it's the top left corner

Bob

More likely the center. Or anything else that's not uniform.

I don't usually start looking in a corner.

Anonymous

@Bob you don't look to the center of a website when you first load it, do you?

Anonymous

6:30 AM

(maybe this is why I moved my taskbar to the top :) )

Bob

Now, if I were looking for something very specific (like where's Waldo), I might scan line by line, usually from top left, but sometimes bottom left, nothing fixed. More likely because I use a LTR language.

@PatoSáinz Sure, why not?

Why on earth would I look in a corner, where it's either blank or has navigation elements?

Anonymous

@Bob logo, navigation is a priority for me

Bob

o.O

How about, y'know, the page content?

Anonymous

@Bob let's say I put a watermark in a video that's in 1080p

Anonymous

where would you be more prone to look to it first?

Anonymous

6:32 AM

in the top-left corner, top-right, bottom-left or bottom-right

Anonymous

(excluding the centre)

Anonymous

@Bob i want to know whose content i read first

Bob

@PatoSáinz I wouldn't look at it at all :\

If I were explicitly lookfor for a watermark, I'd see it no matter which corner.

Anonymous

@Bob me neither but just act like someone who doesn't reflexively block watermark and channel icons

Bob

If I'm just watching a video, I'd rather not see watermarks at all.

Anonymous

6:33 AM

where would it be more prominent

Bob

@PatoSáinz It'd have to be pretty obnoxious.

Anonymous

well then a picture that's full purple in the same res as 1080p

Bob

Again, I have no reason to look at any corner.

Anonymous

@Bob you need to go to a psychologist

Bob

The subject goes in the centre. Or in one of the rule of thirds locations. Not in a corner.

@PatoSáinz Perhaps you do.

Anonymous

6:35 AM

Bob

@PatoSáinz That's just disturbing.

Anonymous

@Bob lol, well, thanks for your help

Gear54rus

9:33 AM

@Bob Several hours of digging those threads later I've been able to successfully do that. Daym, windoze, u scary

Bob

@Gear54rus Would you mind documenting it on your question? :)

Gear54rus

yeah sure. Ill do that as soon as I understand it 100% (or even enhance it)

right now I've only been able to successfully install from iso

Bob

@Gear54rus Does it work with both versions?

Gear54rus

@Bob Have not tested with 8 yet. Should be same because installers look same :D

Bob

@Gear54rus Hopefully!

Gear54rus

9:36 AM

and we also need to use 2 3rd party apps along the way.. Opensource rules, really :D

@Bob 2nd problem remains though. It seems that there is no way to mount hidden partition in Windows without un-hiding it first

jackopen

which are the best books/resources to learn about english grammer for a non-english speaker?
from basics
are there any MOOC/open source learning corses-free for that?

Bob

@Gear54rus I didn't see the second problem.

Link? Or describe?

@jackopen Grammar*, and English should be capitalised ;)

You'll probably have better luck over at English Language & Usage or English Language Learners, and their chatrooms.

jackopen

thanks @Bob

why E & G capital?

Bob

@jackopen Names of languages are proper nouns, and therefore should be capitalised.

Gear54rus

@Bob Well basically if the partition has hidden flag (set by Gparted or otherwise) - windows does NOT mount it automatically. This prevents Windows installer from accessing it too. In fact, not only it fails to do that automatically (which is what I am trying to achieve) but also it cannot do that at all (cant force it to do that). The only way would be to un-hide it before every installation.

jackopen

9:44 AM

& Grammer is also name?

Bob

@jackopen "Grammar" does not have to be capitalised - I did so in my message because it was the beginning of a sentence.

If I say "grammar" here, it generally should not be capitalised.

jackopen

oh sorry for misunderstanding

Bob

@jackopen That's fine, as long as you learn :)

jackopen

learning has no end

Bob

But do try English Language & Usage and English Language Learners. And their chatrooms. They're in a better position to help.

jackopen

9:45 AM

i am trying there also parallely

what is the function of elasticsearch site?

can someone help me to explain in layman

s terms

Gear54rus

:O

From what I heard elasticsearch is a kind of database. You can put things in it and then get search results if you wish to pull something. It also natively supports clustering

which is making multiple PCs support 1 database for better performance

Bob

@Gear54rus Hm. Try Shift+F10 to open the command prompt, and run diskpart from there.

That way at least you can unhide partitions without rebooting.

Gear54rus

@Bob yeah, you see, getting to cmd and all is not a problem. The problem is that windows does not see hidden partition as volume (what kind of term is that, anyway :(). It can only mount volumes. Not partition.

jackopen

is it a google's modified version?

Bob

@jackopen No, it's unaffiliated with Google.

jackopen

9:49 AM

owned by some other people

yeah i can guess that

Gear54rus

@jackopen This is something you can install on your own server and store/retrieve data from/to

Bob

Google is one implementation of a search engine (among other things now).

There are many more.

Google wasn't even the first.

jackopen

for general people like me google is more popular hence just gave that name for co-relation

who was first? is it still working ?

Bob

Elasticsearch was designed as software other people to include for internal searching on their own sites.

@jackopen Ehhh... I think Yahoo was before Google. And there was also Alta Vista.

Timeline of web search engines

This page provides a full timeline of web search engines, starting from the Archie search engine in 1990. It is complementary to the history of web search engines page that provides more qualitative detail on the history. Full timeline {| class="sortable" border="1" ! Year !! Month and date (if available) !! Event type !! Event |- | 1990 || || Pre-web search engine || The Archie search engine, created by Alan Emtage, Bill Heelan and J. Peter Deutsch, computer science students at McGill University in Montreal, goes live. The program downloads the directory listings of all the files locat...

jackopen

layer.com is the site

which i want to understand now

can someone explain me what are their plans?

will it be possible to send message from whatsapp to viber or viceversa in future(in similar smart phone IM apps)?

Gear54rus

9:54 AM

@jackopen that's a bit tough to answer without digging their docs. The thing you want to achieve will certainly require programming skills though.

Bob

@jackopen If they decide to support it.

jackopen

@Bob rightnow what is their plan?