Ask Ubuntu General Room

IanC

12:02 AM

good evening!

Serg

light-bulb moment I have a new indicator idea . . . I think I found something for myself to do over the weekend

@IanC evening

IanC

how are you today @Serg?

Serg

@IanC I'm alright. Yesterday had headache whole day, came home, ate and completely passed out. Much more refreshed today,though. It's snowing in Denver, so trying to stay indoors for the most part, but can't bring myself up to do homework

user136984

12:23 AM

Getting late...

user136984

Goodnight folks! :)

IanC

@Serg sorry man, was talking to my dad on the phone. Snowing there? Here the sun is doing its thing, really warm weather, and I might have to face a few days without a fan.. Preparing myself psychologically :p

Ubuntu Questions on U&L

12:49 AM

0

Q: Grub bypass Ubuntu installation

I have a win10 pc and I'm trying to set up a dual boot with Ubuntu using a pen drive with grub. The problem is when I select install Ubuntu from grub menu it has the same effect as if I click to boot Ubuntu directly from my pen drive, so the installation is not initialized but the Ubuntu SO is bo...

Aaron Hall

I'm using VirtualBox, is there a direct way to instrument it programmatically from the host?

IanC

what do you mean?

Aaron Hall

like boot it and then run a script from the host that sets it up.

Serg

@AaronHall you can use VBoxManage to configure the hardware aspect of things, boot, resize drive, etc. If you want to configure OS-specific settings, you might wanna consider setting up ssh server there

although if you can log into virtual machine from host . . . it makes no sense to ssh

WinEunuuchs2Unix

1:11 AM

Is Oracle Virtual Box the best way of running Ubuntu 16.04 within Windows 8.1?

Serg

@WinEunuuchs2Unix I'd say yes. I personally never tried VM Ware, but VirtualBox works alright for me

Man_From_India

My problem of not detecting specific wifi is still there. I think I found the problem.

0

Q: Can't find specific WiFi network (Ubuntu 14.04)

There is one specific coffee shop WiFi network that I cannot connect to (doesn't even show up in the available networks listing) on my Ubuntu 14.04 laptop. I had previously connected to this WiFi network many times, and I can easily/reliably connect to the network using my iPhone or Mac laptop. ...

14.04 networking wireless drivers

Is there any way I can tweak my ubuntu to detect wifi for every channel number?

Aaron Hall

ok, so I just sudo apt install sshserverorsomething?

and then execute it and ssh into it and... run my script through it?

Thomas Ward

1:30 AM

whoopsies looks like I was logged in on my sockpuppet when I wrote an answer. Oopsies.

@AaronHall It'd be a combination of SFTP + SSH

but yes.

On the VM: sudo apt-get install openssh-server

on the Client:

scp -oPORT=22 /path/to/script /home/user/

^ assuming you set up a specific user or a "root" password to logon as root. Though you'd have evils with just root so a temporary bootstrap user wouldn't hurt.

then you would ssh to the server, and execute the script, probably with sudo. ssh -p 22 user@vmipaddress sudo /home/user/script

and hope everything functions.

Serg

@AaronHall yep. So sudo apt-get install openssh-server on guest, configure bridged network on VM settings ( askubuntu.com/a/327512/295286) and . . . you might need port forwarding

Thomas Ward

Normally, I just create a VM and then store that as a template in my hypervisors or on disk, then reclone that accordingly whenever I need things to be identical to the setup

or I provision the servers, and then manage with Ansible or Puppet.

Serg

Oh, also you could do this: configure your VM to run the script stored in shared folder, and call it form /etc/rc.local

But Thomas will agree that's slightly insecure

OK, maybe not slightly . . .quite a lot actually

Thomas Ward

Sergly over here knows how I, an IT Security guy, think :P

Serg

@Man_From_India if your coffee-shop wifi uses 5 Ghz (a,c) type of wifi, and your card is only for 2.4 GHz (b,g,n), I think it makes sense that it doesn't find coffee shop's network

But other than that, i've no ideas

Aaron Hall

1:41 AM

hoo boy

Thomas Ward

I need coffee...

@Serg didn't you tell me you were gonna get me some coffee lol

WinEunuuchs2Unix

@Serg Sorry for delay Serg. I'll try Virtual Box next month and let you know what I think.

Serg

@ThomasWard bfy.tw/8py

Thomas Ward

slaps @Serg for using LMGTFY

Serg

troll laugh

Well, if you're ever in Denver, I'll sure get you some coffee

Otherwise, I only have memes on my disposal

T_T meanwhile, I should probably go eat something. It's 6:49, I've class at 7:30, and I haven't had anything except two cups of coffee for the whole day

WinEunuuchs2Unix

1:50 AM

^^^ Thomas plan for Serg's coffee

Serg

Also, OMG verilog takes forever to compile

Seth

Uh oh guys:

cloudflare: Cloudflare Reverse Proxies are Dumping Uninitialized Memory

6

WinEunuuchs2Unix

oh well it's called Destructive Storage for a reason (RAM that is).

ok maybe it's volatile storage :)

Seth

2:05 AM

hah xD

Edity

2:25 AM

Its been a while, huh?

WinEunuuchs2Unix

You mean since you've been in this room?

Edity

Yes.

also...

ONEPLUS HYPE

WinEunuuchs2Unix

About a week I think.

Edity

:3

screw you Meizu

my phone broke again

end of the line

..

they run out of stock?

seriously???

nvm il get the s7 edge

WinEunuuchs2Unix

Alcatel One Plus?

Edity

2:32 AM

...

no

Thomas Ward

@Seth Eesh.

this is evil

Nathan Osman

2:46 AM

@Seth Hey! I bet that's the reason for the forced re-auth on Android today.

Oh wait - Google doesn't use CloudFlare :P

Seth

or do they?

That's actually a likely reason.

@ThomasWard Very.

Nathan Osman

CloudBleed - let the really stupid pun names return!

Seth

btw, for those interested, here is CloudFlare's response to the incident.

Nathan Osman

> "The underlying bug occurs because of a pointer error."

C development has just been set back three years... ಠ_ಠ

Opponents will jump all over this.

Seth

@NathanOsman It's probably time people stopped using memory unsafe languages anyway.

@NathanOsman not without undo reason. We're not all Linus Torvalds.

Nathan Osman

3:01 AM

It depends what we're talking about, I suppose.

Now that we tools like Rust and Go, we sort of have alternatives.

But even then, we're at the mercy of the implementation, which, at one point, must have been written in a memory-unsafe language.

We're faced with two less-than-ideal choices here: use a memory unsafe language or use one that provides safe memory usage with memory abstraction.

Seth

@NathanOsman yeah, which go does pretty well, no?

Nathan Osman

In the latter case, we take for granted that the implementation is correct.

It does, and I do believe it is the better of the two options.

Seth

btw, go is written in go so...

Nathan Osman

But still - the Go compiler can't be proven to be correct :D

@Seth Yes, but at some point, it originated in C.

Seth

(and assembly)

Nathan Osman

3:04 AM

And GCC has a Go frontend.

...which is written in C.

Seth

@NathanOsman fair enough.

Still much safer than writing everything in C or C++.

Nathan Osman

Whoa... hang on.

Don't drag C++ into this :P

muru

@NathanOsman C++?

IIRC GCC were migrating to C++

Nathan Osman

It is possible to use C++ without pointers.

C++ includes smart pointers and things.

Things written in C/C++ - Linux kernel, web browsers, web servers, etc.

These are complex applications.

Few languages offer a suitable alternative.

Seth

fair enough. C++ never felt like more than a giant hack of C with OOP and a standard library, but I never got to know it that well.

Nathan Osman

3:11 AM

No, it's evolved to become so much more.

The template system is turing-complete :P

WinEunuuchs2Unix

Sorry Nathan have to take Seth's side on this one.

Nathan Osman

Lol, it's okay :D

I'm on both sides of this - I like C++ and I think it still has valid uses. I also like Go and think people should be moving towards memory-safe languages.

WinEunuuchs2Unix

I thought Seth was promoting C over C++... I wasn't referring to Go which I don't know.

If you want memory safe try COBOL :p

Nathan Osman

That's... a bit outdated :P

WinEunuuchs2Unix

Yeah I know....I was kidding

But seriously there are lots of memory protected languages out there.

Perhaps C# is a nice middle ground between C and C++.

Anyway time to say goodnight :)

Nathan Osman

3:26 AM

C# is looking a bit more attractive now that dotnet core is open-source.

Python is nice but it has its own issues.

Thomas Ward

don't go dissing Python unless you want a war

Smokey's written in python lol

Nathan Osman

Smokey. Pffffffft.

My chat bot could lick Smokey with one glance.

:P

Thomas Ward

3:48 AM

waits for @Nathan to admit he failed because Smokey is a semi-sentient antispam bot and not just a chat bot

Nathan Osman

George is far more than a chat bot.

Hrm.

Thomas Ward

dead bot is dead lol

Nathan Osman

He's not dead.

I just can't seem to invite him to the room

Demo here: chat.stackexchange.com/rooms/54157/…

And before anyone gets clever, no, the parameters to dig, etc. are not fed into a shell. Secondly, he is running in an isolated container, so the net yield of an exploitation is likely to be quite minimal.

Ubuntu Questions on U&L

5:05 AM

0

Q: Help with cron and creating scheduler in ubuntu

I'm trying to work in and around API's , pretty new to it. Could I be suggested as to how can I create a scheduler to monitor specific website api's ??

ubuntu cron api

muru

5:31 AM

Huh... All this while I'd been thinking SO had higher rep requirements for privileges. Just checked and it's the same. So 100 more to go to be able to edit! \0/

Zanna

haha lucky for them

Seth

5:44 AM

@muru I thought tag creation was higher, but maybe they've raised it everywhere else too.

yeah it's at 1500 there and 300 here.. Kinda wish they had raised it.

muru

@Seth oh, yeah, it is. 5x more rep than elsewhere

Me too

Tbh, I only care about editing, commenting and downvoting privs. The rest are mostly nice-to-haves

Seth

yeah, those are the most important.

Zanna

6:01 AM

what about close-voting?

Seth

@Zanna very important, but we were thinking of sites other than your "home" sites, if you will.

Zanna

ah yes... it's not the same when you feel kind of like a guest. I have hardly ever flagged any questions to close on U&L for example, but I am impatient to be able to edit... 101 points to go :)

version matters? askubuntu.com/questions/886718/…

muru

6:28 AM

Do we have any questions in user-mode-linux which are actually about

User-mode Linux

User-mode Linux (UML) enables multiple virtual Linux kernel-based operating systems (known as guests) to run as an application within a normal Linux system (known as the host). As each guest is just a normal application running as a process in user space, this approach provides the user with a way of running multiple virtual Linux machines on a single piece of hardware, offering some isolation, generally without affecting the host environment's configuration or stability. == Applications == Numerous things become possible through the use of UML. One can run network services from a UML environment...

I always see that tag in posts for all sorts of userland tools, but never in anything about virtualization

Thijser

6:52 AM

Hey everybody

Nathan Osman

Hello.

Thijser

Anything happening?

Zanna

@muru starts retagging

Thijser

Or could one of you guys take a look here askubuntu.com/questions/886629/… (eager to get ubuntu working on my new system)

muru

@Zanna maybe we should ask for burnination

Nathan Osman

6:57 AM

@Thijser Before or after the first SHA1 collision was discovered and CloudFlare disclosed that private data leaked from their reverse proxies?

:D

muru

@Thijser have you tried nomodeset?

Thijser

Yes I tried nomodeset

Zanna

@muru seems like a valid tag if people would actually use it correctly :/ There are only 59 questions also...

Thijser

@NathanOsman hmm I heard about SHA1 but not about cloudfare yet

Nathan Osman

@Thijser bugs.chromium.org/p/project-zero/issues/detail?id=1139

That tells the (sad) story.

Thijser

7:04 AM

@NathanOsman hmm that doesn' t look very good...

Nathan Osman

But this is really cool:

The latest "nightmare inducing" Boston Dynamics robots

►

That thing with the wheels is insane.

@Seth If you haven't seen that one yet, you should --^

Zanna

7:34 AM

haha found a valid one askubuntu.com/questions/796512/user-mode-linux-on-xenial @muru not much of a question though

muru

Ah.. so much for burnination

Zanna

hmm... well I guess we don't need a tag for every package...

this is probably the worst-used tag I've ever seen >_<

fortunately, time to go to work

Nathan Osman

7:58 AM

Java really isn't all that bad (as a language).

The type safety is similar to Go - no automatic coercion (branching statements require boolean expressions, so if (numBytes) must be written if (numBytes != 0).)

I like that.

Ubuntu Questions on U&L

9:18 AM

0

Q: Problems installing/updating Linux in Dell Inspirion 15 3552

I bought a Dell Inspirion 15 3552 laptop preinstalled with Ubuntu Linux 14.04.However since the version is old,I installed Arch Linux,but the screen goes blank(As in literal blank,not a black screen) during the boot.I did'nt think the problem was with the graphics as Arch boots to a console. I t...

linux debian ubuntu boot intel-graphics

cl-netbox

10:40 AM

@Zanna The answer you criticized is from 2015 ... I don't see it as the highest priority to re-check my old answers for improvements all the time ! Also, I used the asterix for years when it comes to disk and partitions and it never ever lead to any trouble. When I accidentally come across an old answer, I will change it nevertheless from now on. But I think there are answers from other users which would need to be improved a lot more ... by the way, I deleted this old thing : too much trouble !

@Zanna And another thing ... I always try (and tried) my best to help other users here as good as I can and it makes me very sad to get criticized for whatever I do ... cl-netbox don't do this ... cl-netbox don't do that ... don't ping to say hello ... and so on ... don't you think that I deserve a little more appreciation and respect for my work on Ask Ubuntu ?

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