Ask Ubuntu General Room

Amith KK

17:00

BBT

Good Night

aking1012

later on

bob

hello world

what command could I use to remotely, securely and rapidly (with compression) copy the content of one folder (its subfolders, files, whether hidden or not, symlink content, ...), so that any further copy would only make diffs rather than copy it all again ?

mateo_salta

wouldn't the computers need to transfer the data to each other to compare anyways?

bob

@mateosalta are you talking to me ? No computerA could have a copy of what computerB has

but if I'm asking the question it's because I don't know the answer...

mateo_salta

@bob , so it would compare by file names and not byte comparisons

bob

17:13

@mateosalta well as I said I don't know the answer, I just know the question. But I guess it could do a hash of every file to check whether it's been modified, or just see what's the last time it was modified, for example

but in any case I'm sure there are many tools to do that sort of back up in linux, it doesn't matter how they work internally, it only matters that they get the job done

mateo_salta

well there is scp ss64.com/bash/scp.html , I suppose you could pipe in the output from a command that checks for modified in the last so many hours, howtoforge.com/finding-files-on-the-command-line

... I think, anyways I haven't tried it.

aking1012

you're saying how do i use a git-like filesystem i think

Alvar

hi

I got this error when I tried to install 12.04 on my usb stick Could not move syslinux files in "/media/6422-CABB": [Errno 2] No such file or directory. Maybe "/media/disk" is not an Ubuntu image?

it's 11.10 with startup disk creator

hoped someone here could give me a quick answer..

mateo_salta

17:34

I think that usb booting is hit or miss, I would try a different software to make the usb , like unetbootin , help.ubuntu.com/community/Installation/FromUSBStick

aking1012

+1

there's also a manual question on-site ... i found it by accident so it shouldn't be too hard to search for

Alvar

I noticed the one I downloaded form ubuntu.com/downloads/VERSION...

was at 702 mb and the one form ubuntu.com -> downlaod was at 698

will try that one.

It has worked before with startup disk creator...

aking1012

i think this may have been a rhetorical question ~= complaint about the oversize occasionally bug

i don't mind complaints, but they shouldn't be phrased as questions

Alvar

well

I has hopeing for a quick answer, so I went here, I know questions/answers is what the site is made for, but still , was hoping or a quick solution to this silly problem.

mateo_salta

Solution, use a cd, buy a usb cd drive.

aking1012

17:41

that was quick

mateo_salta

and simple

Alvar

@mateo_salta that's a HUGE work around, and it's quite stupid, this usb stick and this method has worked before...

@mateo_salta all the shops are closed, it's 19:42...

was hoping to get this started before the soccer final (EM).

aking1012

@Alvar - have you ever tried to optimise a distro to fit on a CD? i suspect you should file a bug with startup-disk-creator unless it already exists

or simply use unetbootin as was suggested

Alvar

@aking1012 I just downloaded the ISO from here: releases.ubuntu.com/precise and tried to install it with startup-disk-creator, I erased the drive before I did.

aking1012

none of what you just said changes anything i said

Alvar

17:44

@aking1012 isn't unetbootin and wubi the same? is confused around that...

aking1012

no. it isn't

Alvar

@aking1012 I didn't understand your question really...

mateo_salta

the method they use is such a roundabout way of doing things, basically they trick the computer into booting the kernel, and then loopback the directory it needs, so every distribution and version is different, you are getting that error because It can't find the files, possibally because of how it was created.

aking1012

basically i'm saying suck it up. it sounds like complaining

Alvar

@mateo_salta so the installation with disk creator is based on the state of the current system?

mateo_salta

17:46

It needs new configuration files, If I remember right

Alvar

will try a different iso and if that doesn't work then it's unetbootin

aking1012

@mateo_salta don't get baited. it's classifiable as complaint and ignore...much like the katz how do i do different DEs myriad of related questions

mateo_salta

yeah, I've wasted hours trying to boot usb dirves, I need to buy one of these, would be awesome zalman.com/eng/product/Product_Read.asp?idx=431

aking1012

my 16G usb works fine for everything i've tried with unetbootin. if it works use it. if you fight what works it's a faction war(see libav and ffmpeg)

mateo_salta

I would want it for more that just linux cd's and the setup is a pain, this hardware vurturalizes an external cd drive so the iso's boot exactly like the cd's would.

aking1012

17:52

►

Alvar

well thanks a lot! unetbootin worked great! :)

mateo_salta

sounds kind-of like Justice

Alvar

sorry for sounding like I was just complaining...

mateo_salta

awesome, glad it worked

Alvar

now 12.04 here I come! :D

aking1012

17:53

awesome...glad unetbootin worked

Alvar

I love a fresh install been over a year since...

cya on the other side :P

mateo_salta

how about this @aking1012

►

aking1012

listening

izx

@mateo_salta: that Zalman drive is da bomb....stick an SSD in and bam! Also the roundabout way you describe is ultimately because of the way the BIOS was designed 25+ years ago....I'm told no such hack is needed if you have an IA-64 machine :p

mateo_salta

did they build it into the motherboard?

that would be cool, is that because of UEFI

rogcg

17:58

is there a way to make two videos in one using PITIVI?

I mean, two videos playing side by side and the audio tracks too

aking1012

i don't see a justifiable use case for that

@mateo_salta sounds like a nice track

mateo_salta

@aking1012 I like the one you put up too

aking1012

generally anything blue stahli is pretty great

izx

This poor chap is exactly like his nick....all heart but no .....

aking1012

i've never seen a profile that negative ... speaking of points

rogcg

18:03

or kdenlive is able to do that?

aking1012

@rogcg clarify what you want to do. i'm a fan of kdenlive generally, but i'm not sure i know what you want

rogcg

@aking1012 I mean, play two videos side by side

also the audio

so let's say I want to make a movie of me playin violin and piano, so I'll put both videos side by side

got it?

two squares, each one showing a video

and syncing the audio

aking1012

yes, but how would you control it? like blueray has picture in picture but it's atrocious to work with

rogcg

@aking1012 whats the best approach? I have no idea of how to make it

aking1012

i would just make a new vid/aud stream that is the combination of the two. i'ld use sox to mix the two audio streams together and ffmpeg/libav to sort of join the video parts

mateo_salta

18:08

I rember vlc was able to do play multiple videos at one time, might still have an option, wiki.videolan.org/How_to_play_multiple_instances_of_VLC I rember playing 10 videos at once before on windows once

rogcg

@aking1012 a better example, I'd like to make a video like this. youtube.com/watch?v=1yydcG9woWA

not with the same editing level, but a simple one, just playing two videos together. Is that possible with kdenlive? If yes, any resource for that?

aking1012

i haven't seen a resource for that. it's not a simple thing to do on the linux side(possible, but not simple)

rogcg

@aking1012 ok. thanks anyways.

mateo_salta

oh, so you need a professional video editing software

rogcg

@mateo_salta kdenlive not possible?

izx

18:13

@mateo_salta I was being sarcastic about the Itanium, but it may well be possible on pure EFI. BTW here's the exact reason for the hack:

mateo_salta

looks cool, I would try it, if they let you reside the videos, just re-size and try to put one on a different time line,

izx

INT 13H

INT 13H, INT 13h, or INT 19 is shorthand for BIOS interrupt call 13hex, the 20th interrupt vector in an x86-based computer system. The BIOS typically sets up a real mode interrupt handler at this vector that provides sector-based hard disk and floppy disk read and write services using cylinder-head-sector (CHS) addressing. INT is an x86 instruction that triggers a software interrupt, and 13hex vector passed to the instruction (interrupts start at zero, and are labeled with hexadecimal values). Overview Under real mode operating systems, such as MS-DOS, calling INT 13h would jump into...

aking1012

/me needs to brew coffee

EDT

there's just too much blood in my caffeine system

2

mateo_salta

that's cool @izx

aw 5min past, I can't edit my typo

izx

The charade continues until the kernel intercepts the 13h call, cries Y NO DISK and panics with no vfs sync...unless it has the option and you have told it where to find the root disk in a non-standard location

mateo_salta

18:21

lol, that's good

izx

Rofl!

aking1012

so anyone in the room want to get in on fixing all the python/developer-portal tutorials to get them up to date? (by that i mean a tree where there's a version for 11.10, 12.04, and Q that all work as i think it should be done )

i noticed that recently, the non-working ones got nuked instead of just noting that they only work for 11.x

no, i am not a canonical employee

izx

I suggest the one whom our present interlocutor is in the habit of defining by means of the perpendicular pronoun :p

aking1012

i can haz english translation without teh big words?

attempt at humour

eschew obfuscation comes to mind

rogcg

@aking1012 I dit it! Just used composition

aking1012

18:31

@rogcg good. if you have a tutorial on the thing, maybe you should add it as a self-answered question here. that way others can use it. myself would probably have done it a different way, but that is the bonus of the linux thing

rogcg

@aking1012 ok. Ill get more experience with this video editing and will make a tutorial

aking1012

experience isn't necessarily required for a tut. if you just did it one way, then tell ppl about it. if they don't like it, oh well. at least you put out how you did it

izx

My words may have been punny but I was serious: @sabdfl get @aking1012 on an indep contract Quickly ;)

rogcg

@aking1012 ok =)

izx

The fact that we slow down on weekends is testament to Ubuntu's penetration into the business/professional world....

aking1012

18:39

that's a really fair-ish point. i would also think about the fact that it could be that lackadaisical sysadmins contribute traffic on weekdays.

izx

True

aking1012

also i'm a little odd on your sabdfl tag since the user doesn't actually exist on AU SE\

just sayin

Ubuntu Questions on U&L

0

Q: "mount: / is busy" when trying to mount as read-only so that I can run zerofree

I am trying to run zerofree on Ubuntu 11.04 so that I can compact the VirtualBox vdi image using: VBoxManage modifyhd Ubuntu.vdi --compact In order to run zerofree the disk image has be mounted as read-only. I'm following these instructions which says to use this to remount as read-only from t...

mateo_salta

Self-Appointed Benevolent Dictator for Life, aka Mark Shuttleworth

aking1012

ahhh...i get it now

i was busy piecing together tweets that correlated to gmail posts which seemed verbatim the same

mateo_salta

18:46

ah, never click on the first google link

aking1012

also a fair point

izx

Hehe, thanks Mateo; I wonder who on AU is the closest we can get to on the Canonical ladder..... Popey is probably closest geographically

aking1012

no idea. i'm sure i've defended one of his questions recently

see askubuntu.com/questions/157364/…

mateo_salta

colin watson? wiki.ubuntu.com/ColinWatson

don't know, but he is on ask ubuntu

izx

19:05

Quite Possibly. I'm sure the JorgeBot can give us a definitive answer ;)

aking1012

u guys make me smile sometimes

Eliah Kagan

19:22

0

Q: To active update manager

I dont have update manager in my netbook. My company seems like disabled it. I am still on ubuntu 10. many software never updated.can any one please help me out.

update-manager

i think what that OP really may need to know is how to access the respositories for EoL releases, since they may be using 10.10 rather than 10.04 LTS.

mateo_salta

19:40

hm, the "company" may have set him up without privileges, I think we need more info

aking1012

my help is find a better company

mateo_salta

or buy your own computer

aking1012

fair enough

mateo_salta

do you know if any manufactures made ubuntu systems where they "locked down" certian features because of support, I remember some older linux system ones were like that..

George Edison

bash is biting me again.

Questions Feed

19:47

Great answer: Dropbox install stuck at 99%, how do I fix it? (and any dpkg errors) http://askubuntu.com/questions/154671/dropbox-install-stuck-at-99-how-do-i-fix-it-and-any-dpkg-errors/154698?atw=1#154698 #apt

Tweeted by AskUbuntu on June 30, 2012 at 7:34 PM

aking1012

@GeorgeEdison bite early and bite often right?

maybe that came across wrong. if you put it together well, then early failures are a good thing b/c they chip away at total failures

George Edison

Actually, it turned out the be make.

I forgot that $ is a special character to make.

$ for po in `echo po/*.po`; do po2ts -i $po -o ${po/.po/.ts}; done
/bin/sh: 1: Bad substitution

Bad substitution???

Alvar

hi

12.04 is nice! :D

it's so much faster :D

George Edison

Ah, so it seems like /bin/sh was getting used instead of /bin/bash :P

It gets fun when you're escaping shell code inside an eval block inside a makefile.

mateo_salta

20:04

interesting, later

aking1012

why were you escaping shellcode in a shell script?

jrg

20:57

Are you guys hunting sabdfl?

crud. my server is hardlocked.

43

Q: Anyone else experiencing high rates of linux server crashes today?

Just today, Sat June 30th - starting soon after the start of the day GMT. We've had a handful of blades in different datacentres as managed by different teams all go dark - not responding to pings, screen blank. They're all running Debian Squeeze - with everything from stock kernel to custom 3....

linux debian ntp server-crashes leapsecond

6

now thats rough.

jrg

21:16

So far I've been spared, but I think its because I don't have ntp running on any of my machines.

(my hardlock was unrelated, i screwed up apache configs to make it become a memory hog)

user19161

@jrg My internet was slow the past two days, and it seems the file I downloaded from the Debian mirrors was corrupted.

jrg

ok...

did you ask on the site?

user19161

@jrg No, I suspect it is an earthquake somewhere in the world.

jrg

@JasperLoy so you didn't ask on U&L?

i mean, i can't help if you don't have a question.

user19161

@jrg No, I am not here for help, I'm here to chat with you.

jrg

21:30

ok...

George Edison

21:49

@jrg In the span of 5 hours, that question has had over 10k views. Wow. Just wow.

jrg

@GeorgeEdison It was at 7K when I posted it.

George Edison

That's unbelievable. I wish my questions were that popular.

jrg

Don't we all?

I'm sure being on the front page of HN helps.

user19161

@GeorgeEdison Maybe many are having the same problem?

George Edison

So would Ubuntu kernels be affected?

jrg

21:52

Only if they are running ntp, yes.

Ubuntu desktop does not, so i don't think most of us have to worry.

user19161

Er, but everyone uses ntp.

jrg

The ntp service

> The work-around is to just turn off ntpd. If ntpd already issued the adjtimex call, you may need to disable ntpd and reboot to be 100% safe.

my ubuntu server doesn't have it, looks like it's safe as well.

George Edison

Yay - we will survive the dreaded leap second of 2012!

4

jrg

Perhaps. The day is still early, at least in your timezone.

I may get a lockup before midnight, it's only 6PM here. ;P

user19161

@GeorgeEdison It's 1st July here already.

aking1012

22:00

Unfortunately the blades all supposedly had kdump configured, but they died so hard that kdump didn't trigger - and they had console blanking turned on. I've disabled console blanking now, so fingers crossed I'll have more information after the next crash.

-- oh...god...

A single - package related - hard-lock on linux servers? WOOOOOO I get completely unexplained hard-locks for no reason at all on Windows.

George Edison

I sort of have translations working :)

Unfortunately if the string isn't translated, it's mysteriously blank...

Ubuntu Questions on U&L

22:20

0

Q: How can I rename all files in the current directory having a particular extension to another extension?

Suppose that in my current/working directory I have five files: file1.xvg file2.xvg file3.xvg file1.eps file2.eps Is there any way that I can rename all files in the current/working directory with the extension .xvg and give them the new extension .txt (leaving the .eps files alone)? Can this...

bash ubuntu filesystems directory rename

aking1012

does anyone think i should submit the chain of notebook questions as a tutorial if i polish it?

Questions Feed

22:51

Can you answer this? How do I install the LaTeX opensans package? http://askubuntu.com/questions/157812/how-do-i-install-the-latex-opensans-package?atw=1 #latex

Tweeted by AskUbuntu on June 30, 2012 at 10:34 PM

jrg

23:26

@aking1012 please do!

@GeorgeEdison almost to 20K views now...

Ask Ubuntu Meta

0

Q: Should I feel bad about not giving a bounty to an answer on a bountied question?

I asked this question a while ago and gave a bounty of 50 rep to it. I received some good answers in no time and went through them. Although they didn't fix my problem. Next the bounty was over and I was left with the "Grace Period". So I went through the answers again and tried the solutions....

discussion bounty

jrg

@AskUbuntuMeta you should feel very bad and guilty.

George Edison

23:49

build/nitroshare::
    for po in `find po/*.po`
    do
        po2ts -i $$po -o `echo $${po} | sed s/.po$$/.ts/`
        sed -i -e 's/\(type="unfinished"\)>/\1\/>/' -e '/<\/translation>/d' $$po
    done
    lrelease po/*.ts

Looks like fun, huh?

jrg

If your idea of 'fun' is really weird regexes, then yes.

George Edison

I really wish that wasn't necessary but po2ts emits malformed XML (well not really, but it won't work either way).

And to top it off, it doesn't even work :P

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