Ask Ubuntu General Room

jrg

12:00 AM

That looks like it'd work even on a Windows host.

Fabby

@NathanOsman Upvoted!

Nathan Osman

@jrg In theory yes.

terdon

> Even checking /sbin/init is not technically sufficient since the init program can be customized at boot time.

Fabby

(and close vote retracted)

terdon

@NathanOsman could you elaborate?

Nathan Osman

12:01 AM

And I don't know why people are voting to close...

It's not a dupe.

I left a comment.

Fabby

Not any more...

Nathan Osman

@terdon I can add a parameter boot=/bin/whatever to the kernel boot line and use whatever executable I want.

Serg

@NathanOsman using a processor emulator to check kernel ? did i get that right ?

Fabby

Rinzwind's old answer was the best until now... We should dupe that one to yours now!

Nathan Osman

@Serg Yes :)

terdon

12:02 AM

@NathanOsman Ugh, of course, init != kernel, stupid terdon.

muru

@Fabby for the currently running OS, uname still is the best option, IMO

Fabby

@NathanOsman ----- ^

so if you add that, we can dupe Rinzwind's answer to yours!

Serg

@NathanOsman well played, sir, well played

Fabby

>:)

terdon

@muru Well, yeah, for the one you're running, it's trivial.

Nathan Osman

12:03 AM

If someone wants to add that, that's fine.

I'll be AFK for a few minutes.

RPi Awesomeness

@NathanOsman You know that issue I was having with big transfers between my desktop & laptop? Turns out it was our router.

We got a new one with the cable, and it's been just dandy since :)

Nathan Osman

Awesome.

Yes, routers can be a little tricky sometimes.

I used to have one that refused to work properly with my Kindle Touch.

No amount of configuration or repositioning would make any difference.

As soon as I got a new router, it worked flawlessly.

Fabby

@NathanOsman Done!

Now edit the title of the question and then dupe Rinzwind's answer...

Nathan Osman

I'm back now :)

jrg

I am still trying to figure out HOW we got someone to delete their home directory.

Fabby

12:11 AM

@NathanOsman :P

@jrg :D

jrg

I'm a little shocked that it hasn't happened before today (That I'm aware of)

Nathan Osman

@jrg Wait - wut?

Fabby

That was funny!

jrg

but seriously, that's not cool.

Nathan Osman

What happened?

jrg

12:11 AM

@NathanOsman dunno exactly. I showed up near the end.

Nathan Osman

(I wasn't here earlier.)

crasic

cat /dev/urandom > /dev/kmem

Nathan Osman

Oh hang on, supper. I'll read the transcript later.

terdon

It was me!

Dammit. And it was completely unintentional.

@jrg :(

jrg

Hey, it's ok. Nothing terrible happened, this time.

I'm still surprised that it hasn't happened before though.

crasic

12:14 AM

@NathanOsman You could try to deduce the ABI from a hex dump of a random executable

jrg

The way we throw The Command around, I would have expected it to have happened a long, long time ago.

Serg

@NAthanOsman as I understand Mudit added rm command to delete his homefolder to .bashrc or something like that. IT's been a long day

Fabby

Now everyone VTC this one as Nathan's answer is better...

jrg

Like, I've been worried about that happening since uh, day one.

Fabby

(Rinzwind is going to go apeshit when he comes back from holidays)

terdon

12:15 AM

And that's how it happened. Giving a screenshot since I've deleted the offending message.

jrg

@Fabby No, it isn't a duplicate!

terdon

In my defense, I did tell them not to do it. Quite emphatically.

Serg

@Fabby you're kidding , right ?

Fabby

@jrg Now it is...

jrg

One is "How do I tell what I'm running?", the other is "How do I tell what I was running?"

terdon

12:16 AM

@Fabby What? Why? One asks about the current OS and another about an OS stored on a disk.

Fabby

Nathan's now is both...

crasic

Its a more interesting question if you have to determine the current OS running from a single file compiled for that OS

Fabby

So the better answer... >:)

Serg

holly cockroaches , it's 3:18 am

I better get some sleep guys. see you later ! o/

Fabby

Anyway, Mudit's reaction to the deleted home directory was:

crasic

12:18 AM

uname -a == cat /proc/version

Fabby

Oh, there were just some files... Did this command touch my system???"

RPi Awesomeness

@Serg xD

terdon

@crasic Only on the running system

Fabby

@Serg 02:19 here!

RPi Awesomeness

@Fabby You're joking...---we--- you actually deleted someone's home directory? o.O

Fabby

12:19 AM

G'night everyone!

terdon

@Fabby Yes, at least. I felt really awful for the poor guy. I was very relived when I found out he didn't lose anything important.

Fabby

@RPiAwesomeness he did it himself!

RPi Awesomeness

OH BOTHER FORMATTING

terdon

@RPiAwesomeness No, I did. With the user's help.

RPi Awesomeness

@terdon Ah >.<

terdon

12:20 AM

The rest of the room is as innocent as a newborn wombat.

Fabby

I did an rm -rf /*;bak once...

crasic

@terdon can one uname on a non-running system?

terdon

@crasic No, which is why we were having trouble finding an answer. :)

Fabby

@crasic nope...

RPi Awesomeness

Watching New York Rumble vs Boston Whitecaps. Poor Rumble, they're getting creamed.

terdon

12:21 AM

I assume these are teams of some sort?

crasic

I currently have a embedded rtlinux and cygwin running so I can't troll the OS for fun files

terdon

Croquet?

crasic

is System.map in /boot on grub systems?

terdon

@crasic You\re chatting from an embedded system?

crasic

Well I can, but currently win7

Arm9 aint no joke

terdon

12:22 AM

@crasic GUIs and all?

crasic

No graphic output, but I can curl ;)

If I tunnel through it does that count?

terdon

Heh, no :)

crasic

@terdon How about checking the latest boot log

terdon

I was imagining an embedded system running a full GUI browser.

@crasic For?

crasic

for a linux version

terdon

12:25 AM

$ sudo grep -i linux /var/log/boot
$ sudo grep 64 /var/log/boot
$

Apparently not.

Actually, you might be on to something there.

crasic

check wtmp

terdon

Loads of files in /var/log have relevant strings, trying to choose one now

crasic

just screw it and grep every file for a few strings

terdon

Yeah, that's what I did

Found loads, /var/log/wtmp was one of them

crasic

It will at least tell you the last version that ran

terdon

12:28 AM

Yup and that's good enough for 99.9% of cases.

crasic

you can probably troll through the actual image under /boot to see if there are a few magic bytes or something

terdon

That might be worth an answer.

$ sudo grep -im 1 "Linux version" /var/log/kern.log
Jun 15 23:08:30 badabing kernel: [    0.000000] Linux version 4.0.0-1-amd64 (debian-kernel@lists.debian.org) (gcc version 4.9.2 (Debian 4.9.2-16) ) #1 SMP Debian 4.0.2-1 (2015-05-11)

Could someone confirm that works in Ubuntu?

crasic

oneeee sec

gotta boot up a machine

terdon

@crasic Nah, don't bother, I've got a vm too.

RPi Awesomeness

Jun 22 08:47:40 Archon-Ubuntu-Desktop kernel: [    0.000000] Linux version 3.13.0-55-generic (buildd@brownie) (gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1) ) #94-Ubuntu SMP Thu Jun 18 00:27:10 UTC 2015 (Ubuntu 3.13.0-55.94-generic 3.13.11-ckt20)

@terdon ^

terdon

12:31 AM

Damn!

crasic

more detailed than uname

@terdon ?

What's ckt20? o_O

No idea >.<

@RPiAwesomeness I was hoping for a 64 vs 32 bit string.

RPi Awesomeness

12:32 AM

Ah

terdon

Like: 4.0.0-1-amd64

RPi Awesomeness

It should be amd64...

I mean, it's a 64 bit CPU

terdon

Of course, what I meant to say was "Thanks @RPiAwesomeness for running the command I asked for"

crasic

Its a debian rev number

the -1

RPi Awesomeness

@terdon ;)

crasic

12:32 AM

4.0.2 = Kernel version

-1 = package revision

-ckt20 is a package rev number as well

terdon

Yeah, but what's the ckt20? Some kind of Ubuntu thing?

crasic

yeah, for whatever reason they bumped the rev to ckt20

RPi Awesomeness

No idea!

terdon

OK. So Debian shows architecture but Ubuntu doesn't.

crasic

Its wherever this string is coming from

I'm not too sure

probably in the kernel

you compile with the rev number and it spits that out. The ubuntu devs have a different build config

RPi Awesomeness

12:34 AM

@terdon So, how's that 4.x kernel going?

terdon

So far so good

RPi Awesomeness

Curious if it's worth the risk >.<

crasic

what does it give you?

terdon

I'm on a Desktop though and with old hardware so I don't have any issues.

@crasic No idea to tell you the truth. I haven't even checked the changelog.

crasic

the biggest feature I'm waiting for is a mature LXC

terdon

12:40 AM

Hmm. OK, for Debiam-based systems you can also check the dpkg logs:

grep -c amd64 /var/log/dpkg.log

If that's not a tiny number like 3 or 4 (for the odd multiarch thang) you should be running a 64bit system.

That only helps for amd64/x86 systems of course.

crasic

no time to recompile kernel, time to test peripherals by accessing memory directly

this should end well

using cat/echo with /dev/mem is like using a bludgeon to hit a power button

hbdgaf

@jokerdino - livelovepasta.com/2011/05/nutella-mug-cake thought you might like it

RPi Awesomeness

@NathanOsman You know how we were talking about charsets and standards a while back and you said that UTF-8 had become pretty much the standard?

Just found a place where it isn't.

Freenode IRC

Nathan Osman

Oh?

That's an interesting discovery.

RPi Awesomeness

Working on an IRC bot as part of my Beam.pro bot project and I think it's returning ISO-8859-1

Least ways, it's returning something that isn't UTF-8 :P

And it's annoying

Or rather, it's just a little bit more work I have to do and a little bit uglier code :P

Whoa! My Beam.pro chatbot made the Monday issue of the Team Dubstep News.

Why, I have no idea. But it did!

o.O

RPi Awesomeness

1:30 AM

Man. That thing with Amazon seemingly reloading itself a ton is really annoying. It lags Firefox on my desktop. Something tells me their programming either has a memory leak (somehow) or is simply badly designed.

Because it's really bad

SmokeDetector

2:53 AM

[ SmokeDetector ] Bad keyword in title: Cleanse FX A Weight Loss Cleanse by jenniferbeals30 on askubuntu.com

SmokeDetector

4:29 AM

[ SmokeDetector ] Bad keyword in body, blacklisted website: It includes phosphatidylcholine by reubegorby on askubuntu.com

A.B.

4:39 AM

Morning guys

hbdgaf

5:18 AM

@NathanOsman thought you'ld get a kick out of this: "Queue is the worst word in the English language. 80% of its letters are redundant."

kos

Morning o/

A.B.

5:41 AM

He @kos how are you

o_O

kos

@A.B. Not bad! Today I'm going to sit in front of the PC all day because I have to work here

@A.B. How about you?

A.B.

To answer questions on the phone is not fun. I come later to my PC. and I've just missed my bus.

Nathan Osman

@hbdgaf Heh, good one :)

hbdgaf

also, cryengine is on linux now...

Nathan Osman

The title of the last spam question was "It includes phosphatidylcholine". Call me stupid, but whenever you can't pronounce something, chances are you don't want to indiscriminately stick it in you. Especially when you're told to do it by a question posted on a website about Ubuntu. Slightly suspicious.

Ubuntu Questions on U&L

6:25 AM

0

Q: User-specific font problems in different applications

I have a font-problem with different applications under ubuntu 15.04 (KeePassX, Google Chrome, Pidgin, etc.). In the first picture you can see that the font of the window title is ubuntu but the items below are some other font. In the second picture the whole dialog is in the wrong font. It shoul...

Pandya

6:40 AM

I am not sure but let me know is this ok (helpful)?:-

0

A: How can I determine the OS architecture (32-bit or 64-bit) from a file on a disk?

I've tried following from ISO: Mount ISO on /media/cdrom and then /media/cdrom/casper/filesystem.squashfs at /mnt (ISO rooted at /mnt). OR If you have live disk then you have / of OS mounted by cdrom Following command print architecture: $ ls /mnt/lib/modules/*/kernel/arch x86 Conclusion: ...

A.B.

7:55 AM

Is this wrong?

-1

A: OpenJDK not working

For some reason the desktop file for OpenJDK is not installed, even though this file is listed. $ apt-file list openjdk-7-jre | grep desktop openjdk-7-jre: /usr/share/applications/openjdk-7-java.desktop openjdk-7-jre: /usr/share/applications/openjdk-7-policytool.desktop $ ls -l /usr/sha...

Fabby

8:11 AM

@A.B. reading

Upvoted... I need one here

@Pandya You need to test on a 32-bit system too and provide both values...

;-)

A.B.

@Faby thx and done

Fabby

@NathanOsman That's why they use numbers in ingredients in the EU for all the additives they add... No one would eat cookies with Sodium ethyl para-hydroxybenzoate but'll happily eat E215!

@A.B. On the bus yet?

BTW: you can change ... to ! (makes it less suspicious)

A.B.

@Fabby at work

Ubuntu Questions on U&L

8:31 AM

0

Q: Does kali distro not use /etc/environments file?

I appended a path to /etc/environments file and now it is like so: mindaugas@Kali:~$ cat /etc/environment | tr ":" "\n" PATH="/usr/local/sbin /usr/local/bin /usr/sbin /usr/bin /sbin /bin /sbin" I logged out and logged in again. But my $PATH did not change: mindaugas@Kali:~$ echo $PATH | tr ":...

shell ubuntu environment-variables kali-linux

Pandya

@Fabby what ls /lib/modules/*/kernel/arch outputs for you?

blade19899

I am not sure that this command could work:

> cat /dev/sda >/dev/sdb

The question was: How can i easily clone my entire System?

Can anyone verify this answer?:

2

A: How can i easily clone my entire System?

Boot from a live system, plug in the new HDD via USB (or another (s)ata cable, depending on your hardware), and start a 'Terminal'. Check what is the path for your old HDD (probably /dev/sda), and the new one as well (/dev/sdb), and issue this command: sudo dd if=/dev/sda of=/dev/sdb Please r...

Pandya

Why reverse direction of duplicate ? @Fabby

Fabby

/lib/modules/3.13.0-32-generic/kernel/arch:
x86
/lib/modules/3.13.0-49-generic/kernel/arch:
x86
/lib/modules/3.13.0-51-generic/kernel/arch:
x86
/lib/modules/3.13.0-52-generic/kernel/arch:
x86
/lib/modules/3.13.0-54-generic/kernel/arch:
x86
/lib/modules/3.13.0-55-generic/kernel/arch:
x86

@blade19899 That would work!

@Pandya Because the new answer by Nathan is better: it gives a possibility of doing it on an on-line and off-line system!

blade19899

8:47 AM

@Fabby How then? cat just displays the content of a file it can read in? to clone an entire system would mean, it needs to be able to read every file that user has on his system?

Or am I missing something here?

Fabby

Well, you would need to be root to do that, but it'd work...

I can't see any way it would not work...

Oh! I know: it wouldn't preserve the file attributes!

So it would work for root, but not for any other user....

>:)

Good catch!

Pandya

@Fabby but OP of this question want to determine only from mounted disk not running OS! and what is future of this or this for it?

Fabby

@Pandya Rreading

@Pandya I'm not telling you what to do... None of the duplicates will be deleted... They'll all stay where they are, but the other one will come higher in the search results...

Feel free to vote "leave open"

;-)

blade19899

@Fabby Was that directed to me? :/

A.B.

9:03 AM

@Serg askubuntu.com/q/639775/367165

your awk please =)

Fabby

@blade19899 Yes, I already left a comment on that answer...

blade19899

@Fabby Just refreshed that page ;)

Fabby

@blade19899 ;-)

Journeyman Geek

cat would be a very strange tool for this

blade19899

@JourneymanGeek Thats what I was thinking

Compiling qTox, I get the following error:

> src/video/videoframe.cpp: In member function ‘bool VideoFrame::convertToRGB24(QSize)’:
src/video/videoframe.cpp:124:35: error: ‘av_free’ was not declared in this scope
av_free(frameRGB24->opaque);
^
src/video/videoframe.cpp:125:34: error: ‘av_frame_unref’ was not declared in this scope
av_frame_unref(frameRGB24);
^
src/video/videoframe.cpp:126:34: error: ‘av_frame_free’ was not declared in this scope
av_frame_free(&frameRGB24);
^
src/video/videoframe.cpp:129:31: error: ‘av_frame_alloc’ was not declared in this scope

Oli

9:19 AM

@blade19899 Looks like you're missing ffmpeg (development headers or otherwise, not sure)

blade19899

@Oli I just installed ffmpeg and run make, but still same error

> ffmpeg:
Geïnstalleerd: 7:2.7.1~trusty
Kandidaat: 7:2.7.1~trusty
Versietabel:
*** 7:2.7.1~trusty 0
500 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu/ trusty/main amd64 Packages
100 /var/lib/dpkg/status
7:2.4.3-1ubuntu1~trusty6 0
500 http://ppa.launchpad.net/kirillshkrogalev/ffmpeg-next/ubuntu/ trusty/main amd64 Packages

Oli

You'll need the development files, not just the binary. libavcodec-dev looks like it might help but that's obviously libav-based not ffmpeg.

Also, see: github.com/tux3/qTox/issues/1885

blade19899

@Oli Already installed ?

@Oli Reading...

Fabby

good answer in need of upvoting over bad answer!

blade19899

> Cannot add PPA: 'ppa:jon-severinsson/ffmpeg'.
Please check that the PPA name or format is correct.

Fabby

9:25 AM

Someone is going to try and clone his system with cat /dev/sda > /dev/sdb @JourneymanGeek @blade19899

(which is a neat, but bad idea...)

blade19899

@Fabby That's what i was thinking

Fabby

Please upvote the other answer...

Serg

9:41 AM

@A.B. I'm on mobile so can't awk

A.B.

@Serg o/ =)

Oli

@Fabby Not sure linking to a distribution is neccessarily a link-only answer. Could certainly be a little more instructive but if their site dies, even the most informative answer based on Clonezilla will be useless. Same goes for Ubuntu and every answer on the site.

Fabby

@Oli :D True!

(though I had to read it twice to understand...)

Think about the average 12-YO when you post comments as your mastery of the English language is somewhere in the 99 percentile...

(and we're not native speakers)

:P ;-)

@Oli Read it 4 times now and it's a beautifully constructed sentence, but OTT for even me at a first glance...

Ubuntu Questions on U&L

9:56 AM

0

Q: Package deb dependency problem

I had created Debian package for an application using CPack.. efsagent.deb created..Bt while trying to install the package using the command 'dpkg -i efsagent.deb ' it fails with following error: dpkg: dependency problems prevent configuration of efsagent: efsagent depends on libssl (>= 0.9.8); ...

ubuntu

Journeyman Geek

@Fabby ._.

dd if you must

fresh install + rsync + clever package dumps if you can

Fabby

@JourneymanGeek I agree!

Journeyman Geek

(this is vaguely how I backup my systems)

Fabby

I have 2: System back-ups (boot a customised CloneZilla partition on an external HDD)

Data backups (BackInTime now, but going to have a look at TimeShift)

Yes, I've tested restores already! ;-)

Journeyman Geek

I need to set up properish backups for my linix boxen

Windows backups are solid

My temporary fileserver's fedora, and there's a bunch of selinux settings I don't remember

System's 99% transient data tho

Journeyman Geek

10:18 AM

(main copy of windows backups. I then make 2 more, some long running downloads, test VMs...)

blade19899

10:31 AM

We'll compiling qTox on 14.04 is not gonna work :(

On to 15.04(virtualbox - I'm going stable only from now on)

Fabby

@JourneymanGeek Laughing at your convincingly-breaking-a-system-for-a-non-technical-user

Journeyman Geek

oh god

That one

Amusingly? The answer was actually something I dug up and was too embarassed to post.

So I basically told guys on chat "meh, free answer"

Fabby

Another one: open the registry, manually change the keyboard to something that doesn't exist, log off.

netx logon: BSOD.

Journeyman Geek

Thank god I never actually did that one.

Fabby

Too bad!

Journeyman Geek

10:36 AM

Oh, the beauty here is BSOD on demand.

Fabby

A few in there I've done as well...

SysInternals BSOD

Journeyman Geek

I wasn't very happy about that ;p

Fabby

Wallpaper with a fake desktop.

@JourneymanGeek What happened?

Journeyman Geek

Family politics ;p

Fabby

Ah! Not work Politics! Good then!

Journeyman Geek

10:40 AM

Well. I was working for my dad then

so kinda both

As I eventually told him "I'm happier fixing stuff than breaking them"

now superuser.com/a/417059/10165

THIS is the right kinda sneaky ;p

Fabby

Just upvoted it for the last comment!

;-) :P

Journeyman Geek

If I recall correctly I posted the rest and then I was like.. waiiit a minute...

Fabby

I can't edit this one: Dosen't and adaptor ...

instead of "doesn't" and "adapter"...

and the answer is spot on: 3 days ago my laptop fell off the passenger seat on the floor of the car when I hit the breaks...

... hard enough to unseat the drive from its SATA connector (so it didn't boot any more)...

When I reseated the drive, it just worked!

(whew!)

Journeyman Geek

Oh

THIS one

I have a few 30 gig 2.5 inch HDDs I use as spares

I tend to just stick em into spare systems as needed

Fabby

Using velcro?

Journeyman Geek

10:52 AM

naw

generally super short term use

so I just put them inside the case, flat ;p

(actually, I have that drive in a homebrew nas setup I'm testing

user136984

What do I do if I meet a really friendly Boghog which wants to be friends, but I don't like its language, what do I do? I would feel really bad if I had to hit it to stop it biting me in loving friendship, so what do I do?

Journeyman Geek

(and since my brother's moving out, I can do the build at his place and smuggle in the system later)

0_0

user136984

Do I just put armour on my thighs?

blade19899

github.com/tux3/qTox/issues/1903#issuecomment-114824122

Agreed ^

Fabby

@ParanoidPanda Don't bother about armour: take a SPAS-12 to it...

blade19899

11:05 AM

en.wikipedia.org/wiki/Special:Random

qTox on Ubuntu 15.04 compile error:

> ux-gnu/qt5/QtSql -isystem /usr/include/x86_64-linux-gnu/qt5/QtCore -I. -I. -I/usr/lib/x86_64-linux-gnu/qt5/mkspecs/linux-g++-64 -o closures.o src/platform/statusnotifier/closures.c
src/platform/statusnotifier/closures.c:23:25: fatal error: glib-object.h: No such file or directory
#include <glib-object.h>
^
compilation terminated.
Makefile:2253: recipe for target 'closures.o' failed
make: *** [closures.o] Error 1

user136984

@Fabby: The point was sort of that I didn't want to hurt a Boghog that wanted friendship, it would feel morally wrong to kill something because it really liked me and wanted to be friends... Perhaps if I used armour which would mean that I would not feel the pain, but the biting on their would translate to a vibration or sound which I could then understand, so that I could communicate with them, what do you think? :D

Fabby

I like Space Opera with lots of shooting... ;)

user136984

:D

blade19899

duckduckgo.com/?q=Space+Opera&t=ffcm&ia=about

^ DDG links should onebox!

Fabby

@ParanoidPanda a BFG9000 would do the trick too!

user136984

11:10 AM

Oh dear... All this thought of Boghogs has made my thighs saw...

user136984

Well, I have found a good place to post my odd questions! :D

user136984

0

Q: How to deal with a friendly Boghog without hurting it, and maintaining a postive relationship

In the Hickhiker’s Guide to the Galaxy: Mostly Harmless, on the planet NowWhat there are the Boghogs, and their way of communicating is to bite each other very hard on the thigh, so my question is, if I were to ever encounter one and I wanted to have some sort of friendship with it without either...

hitchhikers-guide animals morality

user136984

Let's hope that they have a more humane way of dealing with a friendly Boghog than @Fabby's ways... :P

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