Ask Ubuntu General Room

deostroll

19:11

0

My laptop doesn't have much battery life. This is usually not a problem while running windows. Now I don't have a windows os, where these problems never cropped up. So I guess this is a graphics card issue. The proper one being loaded. Earlier I had asked for a set of drivers for my laptop, and ...

Serg

Sometimes students ask for help with some very specific software, and I always feel bad, because for the most part we as lab techs are familiar with general list of software - word, excel , printing stuff, browsers, but something like SAP which is specific to the CIS majors . . .then they're out of luck

Serg

19:49

What ?

0

Q: A python program with linux interpreter

python program where the siv program needs the user to enter a path to a monitored directory, another path to a verification, a third-path to a report file and a hash function (e.g, the siv should support at least MD-5 and SHA-1), the siv program must be runnable from the command line: siv<-i|-v>...

14.04 server python python-2.7

Chan-Ho Suh

@Serg clearly an assignment, and asked by someone that can't be bothered to do more than regurgitate a mashup of it. I downvoted it and voted to close.

Serg

@Chan-HoSuh same here, and send them to fiver . . .if they wanna other person to do their homework, pay-up bishez !!! :D

Chan-Ho Suh

this is not an entirely objective feeling :) ... but I tend to feel it's because of people that learn programming this way that there are all these ridiculous hoops and filter mechanisms when looking for jobs

for example, if you ask reasonable, basic questions about some programming language, someone like that can just Google it and cut-and-paste the answer in, so instead companies contrive these ridiculous trick questions about some weird edge case or syntax

I remember reading some blog post that was highly voted up on some site like Quora, where the guy basically Googled everything on a phone interview, ironically, with Google

Serg

20:05

facepalm I understand people want cool jobs and stuff, but come on, show some effort . . .

Chan-Ho Suh

so here's basically a trick question I've asked multiple C++ experts and they all failed it

int c = 0; c++++;

what happens when you compile this?

friend of a friend was actually asked this at a company

Ask Ubuntu Meta

-2

Q: Many kernel questions = unstable ubuntu?

It seems that, a lot of the new questions here on AskUbuntu are about kernels with "attempted to kill init!", which can mean if there's a new kernel, that kernel could be very unstable? I don't know.

discussion

Serg

Um . . . .I'm no C++ guy . . . but first off this is missing libraries, and main . . .c++++ seems like an error to me, because there's only c++ that can be done . . .at least it seems so . . .so compiler error. Probably better done with for loop

Chan-Ho Suh

what do you mean by "there's only c++" that can be done?

(assume the usual junk, like imports and main are there)

Serg

well, in all the time I've coded in C, I've seen only <variable-name>++ for incrementing

if it aims at incrementing it twice, maybe it should be split into two calls, or c+=2

Chan-Ho Suh

20:10

to make a short answer shorter, basically you can do "++++c" but not "c++++"

Serg

Oo

Chan-Ho Suh

prefix increment returns an l-value, while suffix increment returns an r-value

that should make sense, because the former returns the updated value, while the latter returns the before-update value

anyway, I'm not a C++ expert just because I know this ... it's sad but there's like a small family of interview questions having to do with these increment operators, none of which proves I know C++ well at all

Mahesh

yep.

just read the c++ spec.

And it says postfix operators ++ and -- return a prvalue.

Serg

\ (-_-) / exactly, it's like asking me if I know about some obscure bash variable, and of course i probably don't . .. but i can write some scripts here and there

Mahesh

And the operand must be a modifiable lvalue.

I am of the opinion these interviewers consider themselves clever for knowing something obscure, but in reality have no idea what they are doing.

Chan-Ho Suh

20:17

basically there's an arms race in interviewing, but what's interesting is if you actually want to test real skill, there's no need to do this kind of bs, just ask basic questions ... like FizzBuzz :)

Lucio

@hbdgaf lol that's more hilarious

Chan-Ho Suh

@Mahesh that question was asked at a certain company X, which has many devs that consider themselves to be C++ gurus. Thus I will often see someone complain about some question asked when interviewing by company X, and often the question is so obscure the interviewer actually gets it wrong themselves

for example, there was some question about initialization of PODs, and the interviewer wanted to know some obscure feature of initialization in some special scenario

I sometimes wonder what these people are thinking ... after selecting the people that know these obscure facts, you then set them to work on parsing csv files ... so what was the point?

Lucio

@NathanOsman that background in the SEChat is pretty awesome. Where did you get it? or did you build it?

Serg

So . . . y=++c Takes C , increments and stores it memory where y is located. y=c++, stores into Y first, then increments . . .So first one ++++c increments twice, and stores, but c++++ cannot store it twice, only once, so increment will be done only once, right ?

Nathan Osman

@Lucio @ByteCommander got it from somewhere.

Mateo

20:22

@NathanOsman 2buntu just tweeted articles did you hit a button ;)

Chan-Ho Suh

@Serg the assignment to y takes place last ... it's not really relevant to this question

in "c++", the value of c is stored somewhere, and after updating c, that stored value is retrieved and returned

so with "y=c++", that retrieved value is then assigned to y

maybe there's some compiler optimization that would store the previous value in y first, but that's an extra thing

Serg

I'll be back later

need to go cover a coworker for lunch

Fabby

20:35

@ParanoidPanda I've only used it to convert .rmp to .deb. :P

@ByteCommander :D :D :D

@Serg I bet she's cute... (Picture, please!)

VTC this $h|t! CC @ParanoidPanda ;-) :P :D

@Oli Would you care to explain the intricacies of the English language "there can be real steamers"???

I see the words, I understand them individually and still have no clue WTH you're blabbering about... ;-)

Oli

21:09

@Fabby A steamer is a poo here. For the metaphor to work, a poo done outdoors on a cold day. Warm and steaming.

Nathan Osman

@Mateo we just enabled SSL so whatever James uses to watch our feed thought they were new articles.

I've since deleted the duplicate tweets.

Nathan Osman

21:26

Hrm... SSL seems to have broken the app too.

@Mateo if you get a chance, could you please see if the 2buntu app for Ubuntu Touch still works?

There's an HTTP redirect in place so I have no idea why the Android app broke.

Fabby

@Oli :D :D :D

Never would have guessed without the explanation!

IMHO you should refrain from using expressions like that: it's lost on everyone except native Brits...

And I'm willing to bet a bottle of Champagne 99% will not be willing to bother a high rep user (and mod) like yourself to explain himself in the detail I just asked you to do...

(advice from an old fart that has had to explain that "whilst" is the same as "while" to non-native English speaker reading upper-class, grammatically correct technical documentation)

mullerivan

21:50

Hi there im here trying to get ruining a hidden server

I install it from apt

ps -ef | grep -i 'tor' debian-+ 7401 1 0 16:49 ? 00:00:00 /usr/bin/tor --defaults-torrc /usr/share/tor/tor-service-defaults-torrc --hush

cant get it up....

[warn] Couldn't open "/home/user/web/private_key.tmp" (/home/user/web/private_key) for writing: Permission denied

[err] Couldn't write generated key to "/home/user/web/private_key".

user136984

Just giving Kubuntu a go in a VM! It's really amazing! It's advanced so much since I last used it (and they made the ugly bottom bar look good - its ugliness is what had put me off before)! I think that the other Ubuntu flavours could learn a lot from it, its design is really slick and the best one I've seen yet! :)

user136984

I don't think that I'll switch to it, but it really has got a lot slicker than some of the others just in its design and movement.

Fabby

@mullerivan Hi! Could you post the link to the question here on this site?

mullerivan

i didint write a question

so should i?

Nathan Osman

And before anyone asks, Canadian English is more like American English than British English.

Fabby

21:53

@mullerivan Please start doing so and provide as much information as you can into the question.

Then post a link in here and we'll have a look!

Nathan Osman

Though we use British spelling.

(Although I don't.)

Fabby

@NathanOsman So you didn't get the reference to the steamers neither???

@NathanOsman Do you still use the queen's money??? (I rest my case your honour!) ;-)

@NathanOsman BTW: Thanks for fixing the edit bug once and for all!

Works like a charm now!

Nathan Osman

You're welcome.

Yes, we still use the Queen's money.

Her head is on the back of our coins anyway :P

Serg

@Fabby she is indeed cute

Fabby

@Serg :D Just in time!

Serg

22:05

hehe

She has a snappy character, clever, sharp

And she was one of the first people I worked with in the labs

Fabby

@Serg Some advice from an old fart who stopped counting his ex-GFs when he ran out of fingers and toes:

user136984

Oh dear... I think I may have just corrupted Kubuntu... Wooops... :D

Fabby

@Serg Don't be the nice guy, dress sharp, know what you want, and treat the girls like you've got a ton of choice!

Serg

@ParanoidPanda <.< Oh, gowd, you've done breaking Gnome, and now breking kubuntu

Fabby

(washing, not using gel in your hair, not opening a bag of <strikethrough>crisps</strikethrough> chips with your teeth are obviously included)

Serg

22:08

@Fabby My character is mostly the "nice guy", but I do agree with your advice - them girls like guys who are sharp and assertive.

Fabby

@Serg I remember a beautiful, rich, funny, intelligent girl who always fell for the wrong kind of guy:

Leather jacket, motor cycle, busting her up...

I'm serious: be more assertive and less of the nice guy...

Serg

\ (-__-) / female logic, it's all opposite

user136984

God... What are you two talking about? :P

Fabby

No, not really: they go for alpha male, unless you're really lucky and you end up marrying your best friend and she ends up marrying her best friend and you'll live happily ever after...

Serg

@ParanoidPanda girls . . . those mythical creatures which surpass unicorns with their mystery

user136984

22:11

Anyway, goodnight from me! :)

Serg

@ParanoidPanda sleep well in your bamboo bed, panda

Fabby

@ParanoidPanda Shut up! We're talking about women!

:p ;-) :D

Above your age-level anyway! >:-)

user136984

@Serg: I've eaten most of it... :P

Fabby

@ParanoidPanda after you finished the chocolate cake???

Serg

<.< how old is panda anyway ? He seems to be much older than I am, and working somewhere

Nathan Osman

22:13

@ParanoidPanda a bug for the alignment of the flashing dots image?

Really?

Fabby

@Serg I'm not going to divulge any personal information I might have, but let's say Panda's quite a bit younger then you...

@NathanOsman my point exactly! -------^

Nathan Osman

First priority is always "does it work?"

Secondly, usability.

Only once both of those are addressed do I care about pixel alignment.

Serg

Huh . . . Well,meanwhile I'm still 25 . . . and just clocked back in from my "fake" lunch break

Fabby

@NathanOsman The politically correct way of saying that is: "It will be included in the feature list of the "next to next" version as the current next version list is already full...

(Whatever the word in English is for "next of next")

;-)

Nathan Osman

I'm not sure we have a word for that.

Fabby

22:19

Oh, how would you say "not the next version, but the version after that" in one word?

like how would you say "the day before yesterday" in one word???

(every language I know about has a word like that, except English)

Nathan Osman

Fortnight means the night before the night before.

Fabby

Thank you!

Didn't know that one...

so "fortday" would be a tongue-in-cheek for "day before yesterday"?

Serg

Lets just say in the "next beta release"

Fabby

Need a refill: BRB

@Serg Good one!

Nathan Osman

@Fabby fortnight isn't used much anymore, so few people would understand "fortday".

You'll mostly see it in literature.

Serg

22:26

linux.com/news/software/applications/…

Apple ports Swift to Linux

GeoMint

guys, do you remember how to use a command and redirect the text into a text file?

I use g++ main.cpp -o exe > ./error.txt but not working

@Serg

Serg

@GeoMint um . . . .seems to be correct syntax. What error does it throw ?

GeoMint

no syntax error

but still prints the output..

Serg

@GeoMint Um . . . it might be printing stderr. Use &> instead of >

Nathan Osman

@Serg did they actually do that?

Serg

22:34

\> is only for stdin

@NathanOsman well so says the article, i don't know how true that is

GeoMint

ok

&> works

Serg

Yup, so it was stderr . . .

GeoMint

but then changes the $? to 0, even if not compiled

Nathan Osman

Wow. I'll have to take a look at Swift then.

They announced it earlier this year, but I didn't know they actually released it.

GeoMint

g++ main.cpp -o exe
if [ $? -eq 0 ]
then
./exe < input
echo " "
./codecconverter/codecconverter64 image.txt image.png
# eog image.png & #GNOME
ristretto image.png & #XFCE
else
echo "\033[01;31m [COMPILE FAILED] \033[00m"
fi

that works, show never mind

thanks

Serg

22:37

OK:)

GeoMint

@Serg i had it without if and sometimes if g++ returned error, then it executed the last compile i did... :/

Serg

@GeoMint check man page for g++, there should be something about exit code behavior

that will be me tomorrow

GeoMint

hahaha

exams?

Serg

yessir, final exam on monday

GeoMint

wow

Serg

22:45

After that semester over . . . and I'm gonna start brushing up my C, Java, and prepare for control systems

GeoMint

we start at 11 January

i will have Java and Data Structures ( C lang. )

next year

Serg

@GeoMint well, my college finishes the fall semester around 17th of December, then it's like a month of a break,and we start again on 21st of January.

I had the Data Structures class this semester but had to drop because of the professor. She was . . . .well,tough . . .

GeoMint

we stop lessons at 18. and in 11 of January is the first day of final exams

we have also tough professors

@Serg what's your college/university ?

Serg

@GeoMint Metropolitan State University of Denver. I'm electrical engineering technology major, but i am also doing minor in computer science, which is why i am going to retake Data Structures and Computer Organization classes next semester. Failed both, but i am persistent

i love computer stuff, i just miss out on small things all the time

GeoMint

Nice

I study at University of Crete, Greece at Department of Computer Science

csd.uoc.gr/en

ohh, you are in UK

@Serg you said electrical engineering, you like to work more with hardware or software? :P

Serg

22:57

@GeoMint I think I prefer software more, but over time I've slowly learned to like hardware as well. Once, I was taking electronics class, and we had to design a two stage amplifier circuit. I've spend so much time on that project and motivation, that by the end of that class, I could recreate it from scratch . . . And I still could do it, i think.

But really , it depends on my motivation.

Programming microcontroller in assembly was a pain

GeoMint

that's true

i have worked with assembly

i had a lesson Computer Organization

Serg

Sometimes I just get these motivation moments, like yesterday. Even though it was 2 am but i still posted a script here on AU. When i enjoy something , it comes out easily. With amplifiers, it was painful at first, but later - i was so driven

GeoMint

i don't pass all my courses, but noone is perfect

Serg

Same here, I failed many

But i try my best to improve

GeoMint

Also, i suck at English :P My vocabulary is not enough sometimes.... I managed to get 10 at English4 but inside me i feel a gap.

Serg

23:07

@GeoMint Yeah, that's a natural feeling. I didn't get to really practice english until I came to the US when i was 16. It's much different than learning in class. You have to learn for practical purpose, to communicate. Grammar is important , but communication is priority to me. This is how I've learned Chinese - focused on communicating with people

And my english still lacks even after 8 years in the US

GeoMint

i remember you are russian

i am greek :P

i can use very good the accent of some languages. They can think i am a native speaker :P

i would like to go to UK for erasmus one day

Serg

:D yeah, if you can emulate an accent , that's a pretty good thing to use - my chinese accent sometimes seems to suggest I've been to China, even though I never have

GeoMint

:)

but i am scared about courses. even if i manage to go to UK college, i need to learn to write texts in essay sizes.

Serg

Yeah, that can be intimidating sometimes. Just let your mind flow, as if you were making a conversation , but on paper. That's what I do

GeoMint

You are right

Serg

23:17

@terdon does that look familiar to you ? askubuntu.com/q/706385/295286

Same user perhaps ? or classmates ? :D

GeoMint

addgroup $group_name VS addgroup "$group_name"

i think the first

Serg

@GeoMint that question has been asked earlier today, same script . . . but apparently by different user . . . .

GeoMint

lol

this is not even ubuntu :P its offtopic i think

Serg

well, it's scripting, it's relevant on Ubuntu . . . but this specific question seems to be a re-post. And probably is a homework

GeoMint

1

Q: Unsure how to use my script

for my first year CS I need to know Shell Scripting, but I'm really terrible at this. I wrote this script for example #!/bin/bash [ $(whoami) != "root" ] && echo "Run as superuser" && exit 1 while getopts "ugb: " opt; do case $opt in u) read -p "Wat is de naam van de user die je wilt toevoege...

command-line bash scripts

lol

it is for a course of first year at ap.be university in Belgium :P

Serg

23:24

Yup, that guy is Belgian . . .but who is the other guy ? O.o

GeoMint

he is MisterMacintosh hahah

fanboys everywhere

he is also from Belgium. look in his profile

MisterMacintosh1, Belgium

1

bash command-line scripts

Serg

-____- MisterMacintosh asking question on Ubuntu site . . . how clever . . . It's like LinuxLover asking question on Windows forum

GeoMint

pfff i hate when they ask everybody to solve their exersices #MrMAC

-5

Q: Can anyone help me with designing a logic circuit from a truth table

Im having trouble with designing a circuit with logic gates that represents this truth table: A B C X 0 0 0 0 0 0 1 1 0 1 0 1 0 1 1 1 1 0 0 1 1 0 1 1 1 1 0 1 1 1 1 0 We can use NOT gates, AND(2inputs), OR(2inputs). Thanks!

digital-logic logic-gates

they make me feel stupid

Serg

4

GeoMint

i also had a lesson where a also made carno maps and NOT / OR / ADD gates

i passed it

Serg

23:31

Same here, i passed my Digital Circuits 1 and 2 . . . .but I'd need to revisit state machine logic . . . Basic gates are simple . . . but state machines are kind of blurry in my memory by now

GeoMint

i still remember the most of it

my course called Digital Design

csd.uoc.gr/~hy120/15f/lab01_swLogic.pdf here is lab1 in Greek :D

Fabby

@NathanOsman Ah... Too bad... But thanks for the literary advice anyway... ;-)

Good night all!

GeoMint

night :)

Serg

@Fabby adios o/

@GeoMint ah, looks a lot of fun. I'd wanna get those logic chips again and just play around with all the gates again

GeoMint

:D

i remember first days with cables and the board, just to make the lamp turn on xD

with the gates AND OR NOT :D

its almost 2 here

i go to bed

thanks for hanging out with me @Serg

Serg

23:42

@GeoMint :) always a pleasure

sleep well

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