Ask Ubuntu General Room

Serg

00:00

well, can we have cards against humanity game now ?

@Zacharee1 @onebree @whoever-else ?

Zacharee1

hmm

idk

I'm working on some comparison charts for our VZW plan vs. T-Mobile

Anonymous

i like your avatar @Zacharee1

Zacharee1

thx

Anonymous

@Serg not tonight. I am not a fan of the interface. It is not a game that is good to play when multitasking.

Anonymous

Like, if it had desktop notifications, I would be happy

Serg

00:10

Can't argue with that

Anonymous

speaking of games... anyone familiar with gifting on steam?

Anonymous

I bought some games on Humble Bundle. Some I have claimed, others not. For ones I have claimed and added to my steam library, is it possible to regift them to someone else?

Mateo

I don't think so

you need to gift them from humble bundle - or do the "create gift" option from humble

Anonymous

There is no mechanism within Steam to send a game I already claimed to a friend?

Mateo

so if you redeemed them they are yours

otherwise there would be a lot of passing games around - so gifting with the intent from the start - or buying for yourself from the start

Anonymous

00:14

Okay.

Mateo

I could be wrong, but that is how I understand it

speeking of - (edited) Deponia up for grabs ;)

first person that wants it

see edit history in 3 - 2 - 1

Anonymous

nah

Anonymous

i thought you linked to something else. not a gift pager

Mateo

it works

Anonymous

what works?

Anonymous

00:18

i am not interested in that game

Anonymous

I want to give away games i got from HB and redeemed before they did the gift thing

Mateo

someone else might, I have the others too if someone sees and wants the set of three

Anonymous

wait,

Anonymous

humble bundle has console things now

Anonymous

humblebundle.com/e3-digital-ticket

Mateo

00:22

I think they did mobile too

Thomas W.

o/ @StefanoPalazzo

Serg

I'm just curios , how many commands does one need to know for Comptia Linux+ ?

Zacharee1

all of them

Serg

<.< Ha . . . .ha . . . ha . . .

Thomas W.

@Serg literally

all the core

all the RPM

all the DEB

how to do the network configuration steps

the various ways of trimming, filtering, etc. output

literally over two hundred commands

Serg

00:31

I wanted to know a number . . .

Thomas W.

CompTIA Linux+ is based on LPIC-1

Serg

200 eh ?

Thomas W.

@Serg Minimum

that's not including chains of commands

or sub commands within a command

so 200 becomes 500 quickly

oh

Serg

Well , without chains and sub commands , how many ?

Thomas W.

and understanding filesystem structure

and what files do what

structure of core system files, how to restrict access to commands, set up sudo from scratch, set up networking from scratch, all the CentOS stuff, all the Debian stuff...

pure commands, maybe 250?

but it's not just commands you have to know

here. here's a practice test. gnosis.cx/publish/programming/exam101.html

And another (both 101 and 102). And more. And one more.

do it blind

most of LPIC-1 is integrated into CompTIA Linux+

Serg

00:36

Which of the following commands can be used to assure that a file 'myfile' exists?

A. cp myfile /dev/null
B. touch myfile
C. create myfile
D. mkfile myfile

Thomas W.

so the 101 and 102 tests are your basis

@Serg I can't guarantee anything in quality

Serg

Answer is B , but touch creates the file if it doesn't exist

Thomas W.

how about you just go through

and check answers yourself :)

Serg

that's what i am doing

Zacharee1

@Serg well if you try to copy a non-existent file, it won't work. I think it's A

Thomas W.

00:36

that would assure it exists though

if it doesn't exist, it creates it, thus it then exists

Serg

@Zacharee1 exactly , A is what i'd choose , but the site says it's B

Thomas W.

there are curveball questions ;)

Zacharee1

Oh wait, "assure"

Not "check"

stupid syntax

Thomas W.

@Serg how would you make absolutely certain the file exists

Serg

assure that a file exists . . . .wow. . . . ok . . .

chaskes

00:37

well, I would use touch

Thomas W.

@Serg exactly what I figured when working on my LPIC-1 cert

there's oddball wordings and such

designed to throw you off

Zacharee1

tsk

Serg

double tsk

Thomas W.

infinite tsk.

Zacharee1

tsk tsk one could say

@ThomasW. you asked for it

time to make a JS while loop that prints tsk on a blank page forever

chaskes

00:39

with respect to all, that's not oddball wording, just formal wording, which tests tend to have. assure means what it means

Thomas W.

yep

@Zacharee1

while (true) { print 'tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk tsk \n\t';} do;

Zacharee1

@chaskes yeah, but I feel "assure" tends to be synonymized (I know it isn't a word) with "make sure," which is generally understood as "check"

Thomas W.

(I don't know JavaScript well :P)

@Zacharee1 well... let me ask you a question

Zacharee1

We need a document.write() function there somewhere

Serg

Python is easier

while True:

Zacharee1

00:41

@chaskes so if you don't think about it very much, A is the answer most people would probably pick

Serg

 print 'tsk'

Zacharee1

@Serg to print to a web page?

Thomas W.

I am creating a Python file. I must open a file for reading in data. I don't know if the log file exists, or even if I can write to that location. How would I assure that the file exists to open it with read permissions first? And secondly, how would I be absolutely certain the file exists to open it?

Anonymous

okay, night all. Gonna read and stuff

chaskes

@Zacharee1 assure in that sentence can only mean make absolutely sure. you're not going to win (against the test, I mean) by getting into that kind of 2nd-guessing.

Zacharee1

00:42

while (true) {
document.write("tsk");
}

Thomas W.

@chaskes Accurate statement is accurate

Zacharee1

@chaskes Just trying to justify why it's a bit of a trick question

Serg

well, we could use os.path.exists() i think or os.stat()

that's the file exists portion

Thomas W.

@Zacharee1 <php print "The End Is Nigh"; print [obfuscated JS code] ?>

BOOM

Zacharee1

@Serg that's checking again

Thomas W.

00:43

obfuscated code

Zacharee1

@ThomasW. uh

Thomas W.

everyone run away

chaskes

@Zacharee1 Well, it just isn't a trick question.

Anonymous

wait

Serg

assure the file exists . . .so create it beforehand

Anonymous

00:44

Is it possible to listen to WMA files on linux

Thomas W.

@Serg Give the man a medal.

Anonymous

if so how or what program

Serg

with open('somefile.txt') as file:

chaskes

yes, it's why you drop a query before creating one in sql since create will fail if it already exists. same principle.

Zacharee1

@chaskes Tests sometimes have questions designed to make sure you're paying attention. If that question is deliberate (which I believe it to be), then it's one of those questions.

Thomas W.

00:45

@Serg Or, an os. command which will create the file. I have a whole logic for this in my personal RotatingFileHandler for log files

@Serg but that's the basis of the question, it's deliberately written to make sure that you are realizing they want the file to exist

not just check

(By the way, I don't like how quickly the chat system prohibits me from posting for 30 seconds - can a moderator see if there's anything up in the system with that?)

(Or, should I be poking the god-level mods?)

chaskes

@Zacharee1 Please accept that this is not a case of me being contrary to tweak you but that it is simply a straightforward question. I am old. I have taken lots of standardized tests. GRE's for example

Zacharee1

@chaskes my teachers put these questions in their tests, so that just makes me think that other tests would have them too

And @ThomasW. saying that the test will have questions designed to confuse makes me think that even more

Serg

There's more than meets the eye to those questions, i see

Thomas W.

yep

Serg

Though it be madness, there's a method to it

Anonymous

00:47

can I listen to WMA files on linux? if so how?

Zacharee1

@Serg angry face

@onebree uh

chaskes

I've gone through the test (though I haven't taken it officially) Saying the questions are meant to be confusing is youth talking. That the questions have a depth and facets you may have to ponder before answering just means it is a difficult test.

Zacharee1

sudo add-apt-repository ppa:mc3man/gstffmpeg-keep sudo apt-get update sudo apt-get install gstreamer0.10-ffmpeg

Anonymous

i need all that crap? ugh

Zacharee1

@chaskes designed to make sure you're actually paying attention?

Anonymous

00:49

I'll just play it on my phone... And if all else fails, then windows

chaskes

no. designed to be difficult.

Zacharee1

@onebree or XBMC

chaskes

@onebree you just need the restricted extras. there's lots of questions on this in the site :)

Anonymous

@Zacharee1 i don't have an xbox

Zacharee1

@chaskes if it's designed to be difficult, it's designed to make sure you're paying attention :p

chaskes

00:49

xbmc is now kodi

Mateo

;)

Zacharee1

@onebree apps.ubuntu.com/cat/applications/xbmc

Anonymous

@chaskes i was hoping to was some simple package install like ~vnc~ VLC or whatever. never mind.

Mateo

and had not much to do with "xbox"

Thomas W.

o/ @Mateo

Mateo

00:50

hi @ThomasW.

Zacharee1

@onebree maybe VLC

chaskes

@Zacharee1 ok, you made me grin, but better to say pay attention when you take it cause its hard

Serg

@Zacharee1 your face is always angry, what are you talking about ?

Zacharee1

@Serg o_O

how do you know

Anonymous

I know of kodi.

Thomas W.

00:50

@Zacharee1 he stole my book of voodoo magicks

Serg

I hacked your webcam

chaskes

@onebree just installing vlc might actually work since it has its own codecs. idk, give it a try

Zacharee1

@ThomasW. ahhhhhhhhhh

Anonymous

i always thought xbmc was xbox media center... which always got me confused on android forums :P

Zacharee1

@Serg my webcam is hardware-disabled

@onebree sigh

Anonymous

00:51

Okay I will try.

Anonymous

Tomorrow

Zacharee1

kk

Thomas W.

what he didn't find is the Forbidden Spellbook of the Doomsday

Serg

you mean , scotch tape over the cam ?

Anonymous

Professor decided to email us a recording in WMA. I feel like asking him to send me an mp3 or whatever more "universal" instead

Thomas W.

00:52

those spells... computers will burn under them heh

Mateo

lol

Anonymous

NOW bye for the night

Serg

@ThomasW. actually , i only want your LPIC notes, hehe, you can keep the spells

Thomas W.

2

Q: Is there a free option for playing WMA files?

Any free codecs out there to get my WMA files playing on Rhythmbox? (11.04)

wma

Use VLC

@Serg Sorry, the notes are in my brain

to get them out, you have to cast a Level 16 spell from the Doomsday spell book

Nathan Osman

ubuntu-restricted-extras

Thomas W.

00:53

and there's evil things

Serg

well publish your brain as a book !!! you'll make good fortune !

Nathan Osman

That usually gets everything playing.

Thomas W.

also that

@NathanOsman though I have better luck with VLC than anything for Windows-codec playback

Nathan Osman

Except totem doesn't play WebM files for some stupid reason.

Gotta use VLC for that.

Mateo

try something like this really fast @onebree media.io online converter?

Thomas W.

00:54

@onebree I suggest either installing ubuntu-restricted-extras, or use a converter, or just use VLC which "just works" with WMV files on Linux/Ubuntu

Zacharee1

@Mateo what even is that sentence?

Thomas W.

@NathanOsman there's no holds on my ability to post is there?

Serg

The command 'ps -A' displays an ordered list of all running processes, with the right-justifed process ID in the first space-separated field. Suppose you would like to display to screen a list of the five most recently launched processes (those with the highest process IDs). Which of the following commands will display the desired items?

A. ps -A | tail -5 | cut -f 1 -d " "
B. ps -A | tail -5 | sed 's/[ ]*[0-9]*//'
C. ps -A | head -5 | nl
D. ps -A | tac | head -5 | cut -b 1-5

Thomas W.

if you as a mod can tell

Mateo

just suggesting that there are converters

Serg

00:54

D , because it's not just list of most recently launched items, but a list in order of recentness

Mateo

there might even be a converter in the software center

Serg

A is just list of last 5

Thomas W.

@Serg don't rely on just one practice test either

I suggest using multiple :P

Nathan Osman

@ThomasW. Here in chat?

Serg

can we have comptia.stackoverflow.com ? It'd be popular

Mateo

00:56

would be funny if the teacher drm protected it ;p

Thomas W.

@NathanOsman Yep, every 2nd post, 3 - 10 second block/wait

sometimes sooner

Nathan Osman

Nothing wrong with your account.

Thomas W.

hrm

Zacharee1

@ThomasW. how quickly are you posting?

Nathan Osman

Must be connection issues.

Thomas W.

00:57

@NathanOsman Dunno, 'cause the timeout / wait period is system-triggered

Zacharee1

Isn't it like a percentage of the current chat that sets a limit?

Thomas W.

not lag

Nathan Osman

@ThomasW. Yeah, I get that sometimes too.

Zacharee1

@ThomasW. maybe lag is making it send multiple times

Nathan Osman

It's just a universally applied backoff AFAIK.

Thomas W.

00:57

i think that needs relaxed a little

Nathan Osman

I've also seen really slow connections trigger it.

Thomas W.

my opinion.

Serg

01:24

Which Linux file can be used to configure the default bash shell behavior for EVERY users on a system?

A. /etc/skel/.bashrc
B. /home/.bash_profile
C. /etc/profile
D. /etc/passwd

Zacharee1

@TheBrownOne ohai

Serg

Answer is C

Zacharee1

C?

Serg

yes, so says the site

my complain about that is only that /etc/profile is for login shells only

it doesn't set the behavior if it's in GUI

Zacharee1

Shouldn't it be A?

user139252

01:25

Hello. On break in class

Zacharee1

oh

well can you run the script?

Serg

That's what i thought . . .A

user139252

@Zacharee1 you can email it to me. Don't like ssh on my phone

Zacharee1

Well the problem is that it expires after 15 minutes

So I have to generate one, which gives me a curl command to give you

user139252

.... y doe?

Zacharee1

01:27

You can ask the developers of PufferPanel

Of course, you could do it manually, but it's probably worth the wait for automation

user139252

Then give me about 2-3 more hours

Zacharee1

uh

Give me about 15

chaskes

@Serg I think you're supposed to assume it's not a gui environment

Zacharee1

Because that's 11:30-12:30 for me

@chaskes triiick questionsss :P

Serg

I wish there was a list of what we're supposed to assume

chaskes

01:29

@Zacharee1 Not a trick, but the exam parameters :)

Zacharee1

But were they listed?

No?

Trick question

chaskes

@Serg You need a guide book or look on the linux institute web site

Serg

already have some books. Will be digging through them this summer

problem is that they're e-books

Journeyman Geek

How's that a problem?

@Zacharee1 only for accounts you create that are new

and b is for single user only I think

tho its 'wrong'

Serg

I can't underline or write comments on them . . . and over the past few years, i've figured that i prefer physical books . . .

Journeyman Geek

01:36

true

Serg

B doesn't exist

Journeyman Geek

We just bring em to a print shop and print/bind if needed

Serg

adminx@L455D:~$ cat .bash
.bash_history  .bash_logout   .bashrc

Journeyman Geek

@Serg yeah, hence the 'its wrong' . I only caught that a moment after I wrote that

Serg

only two options would work, A or C . A would place a specific config into .bashrc of every user that gets create on the system , so that's also default behavior . . .

Jonathan Leaders

01:39

Anyone know why 3.7 package installs 3.8 mercurial? bugs.launchpad.net/ubuntu/+source/mercurial/+bug/1591748

James

has anyone tried snapcraft?

Nathan Osman

YES.

I created a Hectane snap a while back.

It was a Go app, so it was a fairly simple process.

Which reminds me. I think I need to update the snap.

Lemme see if I can find the link...

uappexplorer.com/app/hectane.nathan-osman

Seth

@James yeah...

James

So, can I do snapcraft to deploy new versions of my web app?

Nathan Osman

In theory yes.

Seth

01:47

um. sorta.

Nathan Osman

In reality, I don't think it has quite the same tooling as Docker yet.

Seth

snapcraft packages snaps. You can do snaps to update your app.

Nathan Osman

(The concept is similar.)

Seth

It's still very unbaked in my experience.

James

yeah well docker doesn't have tooling that's easy for a team of 1 to use and grok just yet.

Nathan Osman

01:48

Hey, you should see what I'm doing for a current customer...

I've got a massively complex docker-compose setup with 5+ containers...

Links and volumes all over the place.

James

i just can't wrap my head around it... :\

maybe i'm dumb.

Nathan Osman

It takes time, you're not dumb.

James

well, i've been trying to wrap my head around docker for a few months now, on and off.

i get how to make containers, it's updating them that i get stuck with.

Nathan Osman

Just rebuild from the Dockerfile.

Then stop the existing container, destroy it, and recreate with the new image.

James

ah, so no zero downtime.

Nathan Osman

01:51

Not without redundant containers, no.

James

that's (unfortunately) a requirement from the overlords.

Nathan Osman

There was an interesting GitHub project I found the other day...

It had a web interface for live-routing requests to redundant nodes.

I wish I could remember the name...

James

did you star it?

so my ideal deployment would be what i have now.

docker build

something push

done

behind the scenes, it would push to the registry, migrate the database if required, phase out old containers at the LB, add itself and move on.

Nathan Osman

@James Possibly.

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