Ask Ubuntu General Room

Nathan Osman

00:07

Even with an acquired wakelock, it doesn't seem to make any difference :(

RPi Awesomeness

:(

Seth

@NathanOsman This looks downright scary.

Nathan Osman

It's not quite as bad as it sounds.

As far as I understand, it doesn't permit any new information to be collected - it only allows information already collected to be shared withing various departments.

Aha! So it turns out the problem was that the image-capturing code literally couldn't keep up with the one-picture-every-five-seconds requirement.

Thankfully I expected this problem (though not at 5 seconds) and have an ingenious solution in mind.

RPi Awesomeness

@NathanOsman \o/

Bug with pre-planned fix is best bug.

Nathan Osman

Bug is even a bit strong - limitation is probably a bit more accurate.

RPi Awesomeness

00:45

Introducing the Lily Camera

►

O.O that thing is so cool!

SmokeDetector

05:09

[ SmokeDetector ] Blacklisted website: Are there a lot you see Best Pre-Workout Supplements by susanjmiller on askubuntu.com

[ SmokeDetector ] Bad keyword in body: http://pureandeasyslimbuy.com/xtreme-antler/ by shitakuchi Does on askubuntu.com

[ SmokeDetector ] Bad keyword in body: http://pureandeasyslimbuy.com/xtreme-antler/ by judmons on askubuntu.com

[ SmokeDetector ] Bad keyword in title: Gain Muscles By Increasing Nutrients Utilization by Noor Mehak on askubuntu.com

SmokeDetector

05:59

[ SmokeDetector ] Bad keyword in title: The Best Supplements To Build Muscles by Ethel Saum on askubuntu.com

Pandya

08:45

@Mitch chat.stackexchange.com/transcript/201?m=21570525#21570525

Ubuntu Questions on U&L

0

Q: Unmet dependencies when trying to build chromium browser on Ubuntu 14.04

I am trying to install the necesarry dependencies for building Chromium on Ubuntu 14.04, and I am facing the following message: The following packages have unmet dependencies: g++-4.8-multilib : Depends: gcc-4.8-multilib (= 4.8.2-19ubuntu1) but it is not going to be installed ...

Mitch

@Pandya Let me look into it.

@Pandya Done.

Pandya

09:04

@Mitch OK. Thank-you

Ask Ubuntu Meta

09:57

0

Q: Do all spams get removed?

Why this spam is not removed even if 6 users reported it ?

discussion bug

Rinzwind

10:15

spam askubuntu.com/questions/623120/…

Ubuntu Questions on U&L

0

Q: Launch Win 7 from Grub Terminal?

I a newbie to Linux and tried to install Ubuntu via Win 7 from my SD card where I used a program to mount the is file. I launched the installer from Windows and I asked the program to reboot and it launched Ubuntu from SD card and all looked good viewing Ubuntu. I connected to wifi, pressed in...

ubuntu grub gnu

SmokeDetector

11:14

[ SmokeDetector ] Bad keyword in body: The body increases as you drink by Joshwo Looney on askubuntu.com

RPi Awesomeness

12:25

Huh, new Youtube theme?

Honestly, Youtube. Stop tweaking your UI - it was basically perfect in the previous look. Fix the real issues :P

Dangit. There I go again. Complaining. Stopitstopitstopit.

SmokeDetector

14:32

[ SmokeDetector ] Offensive answer detected: How do I make my terminal display graphical pictures? by Tom on askubuntu.com

Rinzwind

14:51

@SmokeDetector que?! Explain yourself! :=D

RPi Awesomeness

You know how Firefox warns you when you're going to close multiple tabs? Well, they need to have that for multiple windows :P

Ubuntu Questions on U&L

0

Q: Unix with few packages

I want a clean unix OS, just with two packages: gnome-session-fallback & usual ubuntu terminal. I want to minimize the space of my OS take. How can I create this custom OS & install them through usb stick to a few of HDD?

ubuntu gnome gnome-terminal

kos

15:07

@Rinzwind Lol it's indeed due to the silly name of Tom's program

Serg

top of the morning folks

kos

o/

A.B.

@kos, Look at the perl way =)

sorry for ping ping

kos

This should be reopened in my opinion: askubuntu.com/questions/622442/…

Serg

does anyone know how to avoid typing sudo if you've added a command to /etc/sudoers with NOPASSWD ?

kos

15:17

@A.B. In which question?

@Serg Alias in bash_aliases: alias <command>='sudo <command>'

Serg

that was my guess at first. no other method tho ?

terdon

@Serg Not that I know of.

A.B.

@kos the power of perl: askubuntu.com/a/623186/367165

terdon

Well, you could also use a function instead of an alias. Or write a script that calls sudo foo.

Serg

@kos OK, thank you

terdon

15:22

Grrr, this question has 4 close votes. What is wrong with people?

A.B.

no idea off-topic mania

A.B.

15:37

@kos askubuntu.com/a/623186/367165

kos

@A.B. I'm still learning Perl, I'm assuming @tmp{@b} = (); means that @tmp contains all the elements in @b?

terdon

@kos If it makes you feel better, I've been using perl for years and I have no idea what that is. @A.B. are you sure that works? What is it supposed to be doing?

It does seem to work. It looks like it's creating a hash whose keys are all the elements in @b. I've never seen that syntax before though.

kos

@terdon ? Well, still no clue here :D

terdon

@kos A hash is an associative array: $hash{$key}=$value.

So, the line @tmp{@b} = (); is creating a hash whose keys are the values of @b. Apparently.

It's basically a quick way of saving the values of @b in a way that they can easily be checked.

kos

15:54

@terdon Ok I see, so he's checking if a corresponding key exists in @b, not if the value is contained in some key / index

RPi Awesomeness

Okay. Sublime text is becoming more and more awesome by the minute.

I think I may start slowly saving up for the license - I really want to support this. Wish it was $70 though :P

terdon

@kos Yup. That's basically what I'm doing in my answer as well. Just a more condensed version.

@A.B. it takes 15 rep to vote up, don't beg for upvotes from people who can't give them to you. Ideally, don't beg at all, that just clutters up the site with useless comments.

kos

@terdon Just upvoted his and yours, anyway I assume OP is using bash from his unset attempt. Also I don't really understand his comment, looks like it's an answer to another problem, not the one he posted

RPi Awesomeness

O.O

I just died of Squee

terdon

@kos Yeah, I don't know what he means either. His first issue is that he thinks he's using arrays but what he actually has is an array with one element.

kos

16:06

@terdon At first I assumed he was just using the wrong syntax for an array, but judging from his comment and from the fact that he accepted your answer I think he actually has a string, that would explain everything. Tough I think the truth will remain undisclosed

A.B.

Perl Hashes: perlmonks.org/?node_id=1977

@terdon ok

terdon

@A.B. So, what is the @tmp{@b}=() command? Does it create the %tmp hash with each element of @b as a key?

kos

@terdon Also I didn't know about uniq, are there other commands that can be used to perform set operations by any chance? Like addition, intersection an so

terdon

@kos Oh, yes: sort, uniq, join, cut, paste are the most common.

A.B.

foreach $k (keys %tmp) {
print "$k\n";
}

terdon

16:13

@A.B. Yes, that's what I did to figure out that it was creating %tmp. What confuses me is why the syntax is @tmp{@foo}= and not %tmp{@foo}=. Why the array. I'm guessing its using pointers somehow but I don't know how.

user136984

@RPiAwesomeness I've seen cuter.

kos

@terdon Ok I've got sort, uniq, cut and paste already, with join I have addition I guess? Anything to perform intersection by any chance?

terdon

@kos Not off the top of my head, no. I would use uniq for that, telling it to print duplicate lines.

A.B.

I was looking for: "How to find out if X is an element in an array?" perlmonks.org/?node_id=2482

terdon

@A.B. that's a cool trick. Thanks for showing it to me :)

RPi Awesomeness

16:18

@ParanoidPanda Oh, I'm sure, but it's still adorable

terdon

By the way, you could shorten your answer to not use an array at all with do {print "$_\n" unless exists($tmp{$_})} for (@a);

user136984

kos

@terdon Yeah, that would do also. Thanks, also sorry if I ask you lots of question when you're in chat. You're pretty knowledgeable tough, so sometimes I feel like asking

RPi Awesomeness

@ParanoidPanda ...that's not cuter. It's cute, but the one above is cuter :)

A.B.

You're welcome :)

user136984

16:22

user136984

Spam!

user136984

:D

RPi Awesomeness

@ParanoidPanda ... Please don't start spamming cuteness. We already had the whole LOLCATS! room debacle

user136984

@RPiAwesomeness Which LOLCATS?

RPi Awesomeness

@ParanoidPanda

#LOL cats

A.B.

16:24

@terdon ok, that's better

kos

Yes, another Enlightened badge! :D

A.B.

Improved response, an array less. I learn ... =)

user136984

@ByteCommander Where on earth did you find this?! :D

user136984

in #LOL cats, Feb 3 at 16:22, by ByteCommander

user136984

That is so strange!

user136984

16:27

@RPiAwesomeness: Now I see what you people have to deal with.

user136984

;D :P

terdon

@kos No worries, if I don't feel like answering, I'll just ignore you. I think most of us here enjoy answering questions though.

Serg

OK, guys, need feedback here: askubuntu.com/a/623260/295286

terdon

@Serg Are you sure at is default in Ubuntu? I think I found that it wasn't, at some point.

Serg

@terdon not quite sure, but i will look it up

terdon

16:41

@Serg I would also clarify that the script needs to be put in the ~/.config/autostart of every user it should apply to. I think the OP didn't get that.

Apart from that, very nice answer!

kos

@terdon Right.

yesterday, by kos

Should this question be reopened? I agree that is not useful to everyone, but I came across a suggested edit which argued about the thing a little better. I rejected the edit because it tried to hijack the question in the latest part, but perhaps with a more appropriate edit it might be eligible for reopening

Seth

Is there a way I can get a shell from a liveCD without loading Xorg and all that jazz?

ooh

@sabdfl is about to launch into an exciting keynote/demo with a surprise announcement #iotworld2015 http://iotworldevent.com/

Tweeted by dustinkirkland on May 13, 2015 at 4:26 PM

the following packages were automatically installed and no longer needed:
    ksh

wat

Serg

17:14

<.< your system does not like korn shell ?

Seth

I was more wondering how it got installed xD

Serg

maybe O_O yer been hacked

Nathan Osman

o/

Serg

o/ top of the morning, Nathan

terdon

@Seth What do you mean? liveCDs should boot straight into X but, if not, they'll load into a shell.

Seth

17:18

@terdon if I click "try ubuntu without installing" it loads the gui..

I usually make mine with unetbootin.

But for all I know there might be a shell running underneath..

Hence the question.

Nathan Osman

17:30

I'm suffering from the app-development blues.

Serg

@NathanOsman why the blues ? application does not run ?

Nathan Osman

Users are reporting bugs that I can't reproduce.

If I can't reproduce the bug, it's hard to fix :P

terdon

@Seth Ah, I see. Dunno, I'd guess you can do it with the alternate installation cd but I haven't tried.

Or, you could use a different liveCD. One that isn't Ubuntu and so not so tied into the GUI side of things.

Serg

18:15

maybe its related to the user's system, not the app itself

@NathanOsman yeah, that's gonna be tough to troubleshoot

Seth

What's the bug @NathanOsman? Just a crash?

Nathan Osman

Wow... two Ubuntu machines on the network have gone berserk all of a sudden.

I can't launch any X applications on one of them and I suddenly can't write to my home directory.

The permissions were strangely reset to 0500.

Something odd is happening here.

Uh-oh. I had disk encryption enabled and the secure volume somehow got unmounted.

Now I don't even have a home directory.

This just keeps getting weirder.

Rinzwind

18:31

who needs a home when you can just take over another home with ssh

Serg

mkay, guys, awk advice needed again: what's wrong with this picture: ls /etc/rc2.d/ | awk '/^S*/' I still get files starting with k printed

terdon

@Serg You're parsing ls

And your regex matches 0 mor more S. You want awk '/^S/'

What you really want is ls /etc/rc2.d/S*, no reason to use awk at all

Serg

@terdon Well, there is some reason, I want to make a list of all apps in /etc/rc2/ that start on startup, but I guess you're right, i don't need the regex

what about parsing ls though ?

terdon

@Serg It is never a good idea. There are many possible issues and there are always other tools.

@Serg OK, then just do ls /etc/rc2.d/S* or echo /etc/rc2.d/S*

Serg

\ls /etc/rc2.d/ | awk '/^S/ {gsub("S[1-9][0-9]","");print}'

@terdon , wow , didn't know echo could do that

terdon

18:55

@Serg It can't really. That's the shell that is expanding the S* glob before it's passed to echo.

@Serg What is that supposed to do? Are you trying to get the file names without the S/K and the numbers?

If so, use this instead:

find /etc/rc2.d/ -name 'S*' | grep -oP '.*/S\d+\K.*'

In this particular case, you can actually safely parse ls but it's not a good habit to get into. It breaks if the file names contain whitespace, for example.

Your awk would also work but you need [0-9], not [1-9]:

ls /etc/rc2.d/ | awk '/^S/ {gsub("S[0-9][0-9]","");print}'

You could also do

for i in /etc/rc2.d/S*; do echo ${i##*S??}; done

Serg

19:28

@terdon yup, that's precisely what i was trying to do. So find outputs everything as one string, even if filename has whitespaces ?

user136984

19:59

Does still nobody know the answer to this?

user136984

5

Q: How to make volume levels universal

I have noticed for instance, when having my headphones plugged in if I change the volume down to 40%, but before plugging the headphones in I had the volume at 100%, then when I unplug my headphones the volume goes back up to 100%, and when I plug them back in, the volume returns back to 40%. So ...

sound 14.10 headphones volume-control speakers

user136984

:)

TheX

@Fabby

Sheldon Cooper

Sheldon Lee Cooper, Ph.D., Sc.D., is a fictional character in the CBS television series The Big Bang Theory, portrayed by actor Jim Parsons. For his portrayal, Parsons has won four Primetime Emmy Awards, a Golden Globe Award, a TCA Award, and two Critics' Choice Television Awards. Sheldon is a theoretical physicist at Caltech who shares an apartment with his colleague and best friend, Leonard Hofstadter (Johnny Galecki). He is a former child prodigy with genius level IQ, but displays an almost total lack of social skills, a tenuous understanding of humor, and difficulty recognizing irony and sarcasm...

Ubuntu Questions on U&L

20:31

1

Q: Cursor is huge on Ubuntu due to high resolution monitor

So I have a 4k display, and for some reason Ubuntu decides that it's a good idea to give me a huge cursor instead of something normal. I don't have any DPI settings on the 4k monitor, and I don't want any, so why is the cursor so huge? This is how it looks like: This is on Ubuntu 15.04 with XF...

ubuntu xfce cursor

Nathan Osman

Lesson learned: eCryptfs does not play nicely with the Ubuntu SDK.

Tweeted by nathanosman_dev on May 13, 2015 at 8:39 PM

It really doesn't.

paste.ubuntu.com/11119085

A.B.

21:08

@ParanoidPanda sorry, no. :\

user136984

@chili555 Hi, haven't seen you for a while! Have you just not been in the chat room a lot recently, or have I just missed you? :D

chili555

I haven't een to chat as much, @Paranoid. My advisors keep urging me to live a fuller, more rounded life.

Bastards.

user136984

@chili555: Wait... Paranoid? It pinged me and called me paranoid? Not even a panda in sight?! :D :P >:{

user136984

Don't you need to put the full thing to ping someone?

user136984

Very strange...

chili555

21:13

Now the Panda shows. Strange indeed, @ParanoidPanda

user136984

Hmm...

user136984

Odd...

user136984

:D

user136984

Maybe it's trying to tell me something...

user136984

That I'm getting so paranoid I'm forgetting pandas!

user136984

21:14

Oh no!

user136984

:D :P

RPi Awesomeness

Job interview over. As it stands currently, it looks like I'm getting the job, but I can't be sure until next week knocks on wood

chili555

@ParanoidPanda i.imgur.com/0sLjzTz.png Note that the first instance simply says 'Paranoid.'

user136984

@chili555 What is that? My browser for some reason doesn't like me viewing images so I can't see what it is.

chili555

A sreenshot

Screenshot

RPi Awesomeness

21:22

@chili555 You know you can edit your old messages, right?

user136984

Of what? The paranoid thing?

chili555

Are you browsing with lynx or what??

user136984

I'm using Firefox.

chili555

Exactly

Seth

@par you only need 3 characters to ping someone.

I could call you @ParanoidPan and it'd still ping you.

;)

RPi Awesomeness

21:23

@set Really. I didn't know it was only three

user136984

@Seth >:{

user136984

:D

user136984

What if lots of people have the same 3 letters at the beginning of their username?

chili555

@set LOL!

user136984

@Set

RPi Awesomeness

21:24

I thought it was more for some reason, I knew you could ping with a partial name

Seth

I'm rapidly developing pingphobia >.<

user136984

:D

TheX

@RPiAwesomeness what is the job? a Pi baker?

RPi Awesomeness

@TheX ;) Book Shelver at a local library.

$9/hr @ 10 hrs per week

TheX

Oh, that is almost as cool...

Get cozy with the IT guy and get a better job ;-)

user136984

21:29

@TheX And get cozy with the Pandas and you get better bamboo!

ByteCommander

@ParanoidPanda Makes all those who have a name starting with "Oli" go crazy... ;)

user136984

:D

RPi Awesomeness

@paranoidPan I present to you, a paranoid pan!

Badum tish

user136984

:D :D :D

user136984

@RPiAwesomeness What is "Badum tish"?

user136984

21:34

Sometimes to do with Buddhism and pans?

RPi Awesomeness

@paranoidpan urbandictionary.com/define.php?term=badum+tish

user136984

Ok...

RPi Awesomeness

;)

user136984

@RPiAwesomeness You like turning drums into pans?

RPi Awesomeness

It's a cheesy joke image, so I said Badum tish.

user136984

21:35

Paranoid ones?

user136984

Ok... :D

user136984

Anyway...

user136984

Goodnight! :)

RPi Awesomeness

:)

\o

terdon

21:51

@Serg No, it will do that if you use -print0, it prints null-separated strings. That example was just to i) show that you can list only files starting with S and ii) to get you into the habit of using find instead of ls :)

Serg

@terdon Very interesting. so basically parsing output of ls may break with filenames that have special characters in them

@terdon I will keep this in mind in future. Thank you ! =) Seriously, I am so glad I can learn here

terdon

@Serg Among other things, yes. Have a look at this: mywiki.wooledge.org/ParsingLs

And this:

81

Q: Why *not* parse `ls`?

I consistently see answers quoting this link stating definitively "Don't parse ls!" This bothers me for a couple of reasons: It seems the information in that link has been accepted wholesale with little question, though I can pick out at least a few errors in casual reading. It also seems as if...

shell ls

The OP there tries, sometimes successfully, mostly not, to parse ls safely.

He shows that it can be possible but needs a real expert and a ridiculous amount of effort.

hbdgaf

22:10

@Mateo - thanks for the stickers. I forget to say thank you a lot. So, this is me saying thank you.

Mateo

sure thing

Ubuntu Questions on U&L

0

Q: wifi causing kernel panics since kernel version 3.19 update

I've been having issues with my latest Ubuntu 15.04 installation. Whenever the wifi changes on it's own, or I change it through the drop-down selection, my kernel panics -- my computer is unresponsive, all I can do is hard-stop it. Here's the output in syslog from that timespan. May 8 14:42:35...

ubuntu kernel wifi kernel-panic iwlwifi

Virusboy

o/

hbdgaf

o/ @Virusboy

Virusboy

hi is it going

hbdgaf

22:24

health-wise - i don't know if you're up on my scare a week ago or not - but essentially, doc expressed "you could die any time now" then it turned in to "no wait... you're bloodwork must have been wonky because of something you ate." so better in that area.

Virusboy

aka doctor needs to not practice medicine

hbdgaf

not really. he saw potassium off the charts and thought renal failure. a reasonable conclusion. then on a three day later retest i was normal. so don't eat taco bell nachos two hours before you give a tube or two of blood.

Virusboy

high postassium?

is a sign of death

hbdgaf

sign of kidney or liver failure. so, yes if you can't afford a transplant - death

Virusboy

news tro me

hbdgaf

22:29

be fair to the doctor, i haven't been to a doc in 10 years, so there's no baseline for what he saw.

edward torvalds

does anybody know about scaling in unity from system settings > display?

hbdgaf

my hobby project is to a point in a lot of ways, but it takes WAY too long to do certain things, so i'm having to rewrite a lot of it to do partial computes instead of my initial sloppy, but working, just compute the whole thing every time and drop the database to add it again. so i'm adding multi-processing and partial db merges. i wonder if that's a common pattern. to do procedural computes and migration first to see if your code is working - then rewrite it to do partials.

... oh and queues

Virusboy

python?

Fabby

@TheX :D Ah! A fictional character...

Serg

22:56

@Fabby o/

Fabby

o/

1 AM. Watching Ascension Part 2 and then going to sleep... |-)

Serg

is that a movie ? never seen that one

terdon

@Fabby Stargate?

Ah, there's an episode of the animated X-men with that name.

Serg

23:17

@Seth <.<

Virusboy

seth posted naughty stuff

Seth

@Serg ¯\_(ツ)_/¯

Serg

23:31

@Seth dont post naughty stuff, you will be on Santa's list yo ! I'm out o/ time for me to go take my friend to Victorias Secrets -_- i should not have promised i guess

Seth

23:45

@Serg Nah, it wasn't naughty.. Just realized it wasn't accurate so removed.

TheX

23:56

@Fabby what do you mean fictional?

#LOL cats

Transcript for

Ask Ubuntu General Room