Ask Ubuntu General Room - 2018-12-08

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Ubuntu Questions on U&L

4:32 AM

0

Q: whoami returns user but usermod complains it doesn't exist

I have a linux(ubuntu) user "myuser" whoami is able to return the username myuser@host:/home/myuser$ whoami myuser id returns info related to the user too myuser@host:~$ id uid=43350(myuser) gid=600(staff) groups=600(staff),27(sudo) Now I am trying to run docker commands without sudo. So I...

3 hours later…

Ubuntu Questions on U&L

7:35 AM

0

Q: Lyx does not appear in "Open with.." list, ubuntu 18.04

I installed Lyx on Ubuntu 18.04 with Unity desktop. The program does not appear on the list of "Open with Other Application", and .lyx files can't be opened by click. Some solutions on the web suggest to edit Exec field in the corresponding .desktop file. My lyx.desktop file is given below. Can ...

2 hours later…

9:41 AM

@NOrbert: Ping me @Fabby when you arrive?

Hi @N0rbert

So thanks for that!

Hi!

However, as I am deleting old kernels and I don't want any other person that doesn't know what they're doing to follow your answer,

So could you change it to:

Those are not old kernels, but unsigned new kernels so don't delete them!

(Just an case someone else does not have secure boot enabled, because that's what they're for, right?

:D :D :D

and add the "to untruncate that output just do a dpkg --list 'linux-image-*' > /tmp/N0rbert.txt

(That's the bit I didn't know and thanks for the help!!!

@N0rbert Is my assumption that you are Russian correct or incorrect?

(I used to live in Moscow for 4 years and I get a distinct feeling you make the same mistakes in English as a few people that I know there...)

;-)

uname -r
4.15.0-42-generic

ls /boot
abi-4.13.0-31-generic         memtest86+.bin
abi-4.15.0-38-generic         memtest86+.elf
abi-4.15.0-39-generic         memtest86+_multiboot.bin
abi-4.15.0-42-generic         retpoline-4.15.0-38-generic
abi-4.4.0-140-generic         retpoline-4.15.0-39-generic
config-4.13.0-31-generic      retpoline-4.15.0-42-generic
config-4.15.0-38-generic      retpoline-4.4.0-140-generic
config-4.15.0-39-generic      System.map-4.13.0-31-generic
config-4.15.0-42-generic      System.map-4.15.0-38-generic

(I've deleted a few old kernels in the meantime) @N0rbert

Hello?

Updated answer to be more comprehensive.

@N0rbert Perfect!

Accepted!

Всегда пожалуйста!

9:53 AM

Спасибо

:D ;-)

@N0rbert You should drop by here more often and meet the other crowd. ;-)

The best of the best (@Rinzwind) is here often...

Ok :)

1 hour later…

10:59 AM

@Fabby bootlicker ;)

2

Ubuntu Questions on U&L

11:40 AM

0

Q: Login loop in Ubuntu 18.04

My Ubuntu 18.04 on vmware suddenly got stuck in login loop. What I had been doing was just run an easy shellscript to show ANSI colors. While I left from my laptop Ubuntu got sleep, then got stuck. So I refer to [this related question]https://askubuntu.com/questions/223501/ubuntu-gets-stuck-in-a...

@Fabby :-)

@vidarlo Please undelete this answer of yours, it’s a perfectly good answer and very likely to help others (if not OP)!

11:52 AM

@dessert What? He is... Oli is just has the highest score because he's been around longer...

@Fabby ah, you meant in terms of rep

12:09 PM

@dessert Is there anything else to a rep whore like me?

:-) ;-)

2 hours later…

Ubuntu Questions on U&L

2:13 PM

0

Q: ubuntu systemd 16.04 failed start limit

i am getting errors of retry limit exceeds here is my config [Unit] Description=Zone Mail Transport Agent Conflicts=sendmail.service exim.service postfix.service After=mongod.service redis.service [Service] Environment="NODE_ENV=production" WorkingDirectory=/root/zone-mta-template ExecStart=/u...

ubuntu systemd node.js

2 hours later…

4:00 PM

folks, you know dupes with answers will live forever, right?

(unless people vote to delete them)

am I the only one who cares about titles like that living for all eternity?

Lets close them :)

yeah, posts closed as dupes live forever unless they meet the criteria to be deleted as open posts (no answer, negative score or 0 score and low views <2 comments)

I'm saying, it's there in the queue, people are voting dupe, but nobody edits

anyway, done

How can delete them?

only by voting to delete them with delete votes after they have been closed for 2 days

nice

4:06 PM

thanks for fixing there @dessert!

thanks for voting @Benny :)

4:21 PM

@Zanna What was wrong with the original title of "Can't boot into Ubunt after installing side by side with Wondows"? It seems far better than average. At least it tells you immediately that the problem is starting Ubuntu on a dual boot machine. The only addition you made was add the laptop model. What am I missing?

Ubuntu Questions on U&L

4:44 PM

0

Q: Symbol lookup error on ubuntu 16.04

When I try to run octave on my ubuntu 16.04 pc I get this error. Similar event happened when I tried to run virtual box on my pc. How to fix it?

ubuntu gnu octave

@terdon “Wondows”.

^ and Ubunt

Stuff like that just looks bad!

Maybe I am the only one who cares

That's OK too

I can edit

And sure, it's better than many surviving titles along the lines of "please help me with this"

But I find it weird that not one viewer thought of correcting the two very obvious typos in the title

Maybe you are thinking we should leave it like that for the person who makes the same typo in a search engine box

XD

5:07 PM

@Zanna No you're not! I managed to completely miss that!

Even when I copy/pasted the title!

I just read Ubuntu and Windows.

So yeah, that's what I was missing :)

Oh good :D

I thought I must be losing my mind a bit, harmony restored!

just because you're insane doesn't mean you're wrong

5

:p

5:35 PM

Did you know that chown $user:$group $filename clears the SETUID bit from a file, even though the ownership didn't actually change? E.g. chown root:root /usr/bin/sudo and BANG, the SETUID has vanished. I didn't expect that and wrote a mediocre answer before I knew.

12

Q: chown removes sticky bit: bug or feature?

Steps to reproduce: germar@host:~$ cd /tmp/ germar@host:/tmp$ touch test && chmod u+s test && ls -la test -rwSr--r-- 1 germar germar 0 Nov 2 20:11 test germar@host:/tmp$ chown germar:germar test && ls -la test -rw-r--r-- 1 germar germar 0 Nov 2 20:11 test Tested with Debian squeeze and Ubunt...

permissions users chown

POSIX standard even says this, as does the info on setuid and how it's invoked

@ThomasWard Thank you. I wasn't aware. Still, the behaviour is not what I'd expect. What about the principle of least surprise? Never mind.

6:17 PM

@TheWanderer word :)

1 hour later…

7:46 PM

Any native English speakers alive and kicking?

Why? What's your question?

:D

the question is here

Is the phrase "as simple as" good enough, or should it be "as simply as"?

@PerlDuck :P

I'd definitely say "as simple as" because "simply" sounds odd to me in that case. Just a feeling. Maybe @Zanna can help us out.

+1 to offer help for a question you cannot answer... ;-)

@PerlDuck I didn't want to ping anyone that hasn't talked for the last 2 hours. That's why I posted it like I did... ;-) :P

but Seth is around (Don't ping him!) so if he has spare time, he'll have a look.

It's just that simply feels better to me, but ...

/shrug

shutting down work laptop...

@Fabby LOL, Thank you. I've forgotten this one. It never happened again. You are talking about the WOL thing, don't you? Maybe some bit on the wire had a hiccup.

7:56 PM

@PerlDuck Yeah, That's what I was thinking too, but to get through to the TCP/IP layer from the hardware level, it's really unlikely...

as simple as [thing], (as) simply (as) [action]
I would write
Otherwise you can delete them using simply: [commands]

@Zanna Luckily there's the North Sea between us or I'd hug and kiss you now...

So you would say "Flying is as simply as swimming, just in the air"? Sounds odd.

This has been bothering me all day while I was doing work

(No sexual harassment intended, if you were a man, I'd say the same thing)

take out the is, and you are alright there I think

but that word flying is a gerund (a noun in disguise) in your sentence isn't it?

suddenly she was flying as easily as she swam in the pool every Wednesday... something like that :)

but idk, I can't explain... :( I'll think about it

8:08 PM

:D If even you have to think about it, no wonder we're confused!

@Zanna Ahh, in that case I'd say "easily" as well. This means I can trust my gut feeling. :-) And I cannot explain either.

haha if you feel it you've got it

Yes, "flying" is gerund.

there are two things... we have to compare things of the same kind... and, we need adverbs for verbs and other adverbs and adjectives, and adjectives for nouns and noun phrases

in “Flying is as simple as swimming” the -ing forms are nouns, that’s why they can take an adjective

8:10 PM

yes

but what about Fabby's post

what kind of thing are [commands] in the middle of a sentence

in “she was flying as easily as she swam” they are part of the verbal group, and verbs take adverbs

"can delete" is the first thing, and that is a verb phrase

“simply”, because it’s about how one uses something

the comparison is a little bit awkward

@dessert You amaze me more and more... Are you an English teacher and never told us? ;-)

8:14 PM

a different thing would be “using a simple: [command]”, that is a (not mentioned) noun taking an adjective

@Fabby dunno, I just feel languages

yes. no worry about that

Instead of "Otherwise you can delete them using simply:" I'd rather say either
"Otherwise you can delete them using a simple:" or
"Otherwise you can simply delete them using:"

but to make that "as simply as" work, it's not very ccomfortable

you can delete them as simply as this: [demonstration]
seems to me the least bad way to keep that phrase haha

how about “you can delete them simply like this: [demonstration]”

Isn't that ambiguous? We don't know which thing is simple, the deletion or the demonstration... looks like a misplaced modifier? Not a disaster though... I'm just trying to work out how "as simply as" can work :)

8:21 PM

Well, if anyone disagrees with Zanna's you can delete them as simply as this: [demonstration] they'll have to edit it themselves as I'm too tired to bother anymore...

... can work even when the thing following isn't really... a verb

“using” in this sentence is a present participle, and while participles share characteristics from both verbs and nouns it’s mainly used in a verbal way in english

opens a bottle of wheat beer

À ta santé!

which sentence has using?

@dessert Merci! (Having a rum and coke, returning the blessing)

@Fabby there's certainly nothing wrong with what you have there. The discussion has become entirely gratuitous, which is entirely my fault

8:30 PM

> Otherwise you can delete them using simply:

yes but that's not a comparison :)

it's the comparison that bothers me

Zanna’s ~~weird~~ word of the day: gratuitous

:D

Ubuntu Questions on U&L

0

Q: restart systemd after it crash

How to restart systemd after it crash? systemd currently crash during VirtualBox installation. Problem is already tracked by this issue#10716. I'm using Ubuntu 18.10. sudo dpkg -i virtualbox-5.2_5.2.20-125813_Ubuntu_bionic_amd64.deb Setting up virtualbox-5.2 (5.2.20-125813~Ubuntu~bionic) ... add...

ubuntu systemd virtualbox crash segmentation-fault

I (gratuitously!) edited that word into someone's answer this morning too

8:32 PM

So. I have nuked systemd-resolve from orbit. Yet there is something that caches negative dns responses

what the fuck is it? It is not dnsmasq, nscd or bind, as those services are unknown

@Zanna is “superfluous” an acceptable synonyme, or don’t you use this word?

I expect you would find them together in a thesaurus, but I never say superfluous; instead I say unnecessary (which is not as precise of course), and when I write it, I mean, something not needed and extra. It's quite possible I don't understand this word fully because I rarely use it. But when I say gratuitous or write it, I mean something like frivolous, and done only for some worthless motive... like, unnecessary and opportunistic

So I mean to imply that I have seized on the chance to talk about language with very little justification...

only because I enjoy it

and not because it is useful

because gratuitous is also gratifying at root, isn't it?

The disadvantage of "unnecessary" is its spellability. So better just say it and never write it.

that's a good reason to write superfluous instead

I can spell that word and that one beginning with d and ending with efinitely. But I can't spell ence / ance words

Exactly. It's written as it is spoken. Just the "ou" is a bit difficult. But when in doubt and the context is British, just add a "u" after every "o". As in "colour" vs. "color" or "behaviour" vs. "behavior".

8:45 PM

lol yes

a gratuitous u

May be, but I like it and usually apply it.

the ill-motive being to justify a superior attitude towards N. Americans

@PerlDuck :) me too. I find its absence strangely hard to tolerate

But vidarlo wants to know what is caching negative DNS responses so I ought to shush (since I've no idea)

@Zanna When we learned English at school we were taught the British way of spelling and saying. When I read AE then I often think they are just too lazy to spell the words properly. It's not only different to me, it's just wrong. Like "plz" for "please".

LOL. I just hit the 5,000 rep border. Now I can do something with wiki things. That's a really great improvement which I always looked forward to. You better watch this!

9:03 PM

@PerlDuck correct all the wikis!

@PerlDuck review tag wiki edits

But you still can't single-handedly edit them :/ 20k

Congrats :D

TY, @Zanna. But reviewing wiki tags isn't really what I'm interested in. The only priviledge I'm keen on is to view deleted posts.

Going off for now.
"I bid you a goodnight" ;-)

@PerlDuck 15k more to go :)

@PerlDuck May you sleep warm and well.

Yes. Have to get thrice as good.

Thank you, @dessert

9:37 PM

@Zanna Sorry I was AFK.

There is no fault!

just a learning experience of the seemingly easy Danish-French-German language a.k.a. "English"

@PerlDuck That's why we have spell checkers... On my private PC: British English...

On the corporate PC: US English.

Actually, I have these installed:

user image

@PerlDuck The ones I can write in...

heh, why so many dictionaries though?

user image

@terdon Unlike Greek, if you install the French, English, German, Dutch language, you get all of them

I didn't, see above.

@terdon :O

Ah, you installed language packs. I see, I just added them to chromium.

9:47 PM

I installed them as part of Ubuntu.

@terdon Yup...

Also: I do need them as I get confused between them...

E.G. Orange = Appelsien In BE Dutch, Sinaasappel in NL Dutch

apologise, apologize, ...

Potato, potato,

:D

@terdon I can get into trouble in 10 languages,

but only out of trouble in 5

I should install the Afrikaans language too, but it's been too long since I've been in ZA, so not bothering...

It would take me a week to get out of trouble again...

And I'm not counting Greek in those 10 as I can get easily into trouble in Greek too!

@Fabby yeah, makes sense. I'm familiar enough with the vagaries of English dialects that I can usually navigate between BrE and AmE with no external helps. And Spanish has no spelling differences as far as I know. Only word meanings.

¯\_(ツ)_/¯

@Fabby You can indeed! :P

(deleted in case anyone passes that through Google Translate and thinks it's more offensive than it actually is)

@terdon Can Google translate do that colloquial one?

(Or maybe I made a spelling mistake)

AFK BRB

@terdon I spent 4h of my entire life in Greece and that was one of the things I picked up.

10:20 PM

@ThomasWard I thought mod's hammers were heavier than this?

Or are you telling me that all the "nuking from orbit using a laser platform" is just a laser pointer hooked up to a Helium balloon???

@ThomasWard Totally weird! I saw your vote like just another vote!*

it wasn't a vote

it was a manual comment

smacks @Fabby upside the head with a broom

@ThomasWard :D :D :D

More delete votes needed

More undelete votes needed

@dessert undeleted...

10:36 PM

@Fabby nice, finally I can upvote…

@dessert Done too so he cannot delete again...

I saw you talking to him...

@ThomasWard askubuntu.com/questions/1098530/… - I was fairly certain I deleted that answer...

lol

@vidarlo Look 3 lines above...

@vidarlo You're much better than you give yourself credit!

:P ;-)

lol

10:39 PM

Unnskyld!

haha

I wrote the answer before I realised who the asker was, and that it was an example, so ... therefor I deleted it

You don't like our resident Eunuch???

it may not be a solution for OP, but questions are not for OP only ;)

:/

yawns

10:41 PM

@dessert I read the question as an example of how to customize software... :)

@vidarlo He won't mind another answer as long as he gets his rep from this...

@WinEunuuchs2Unix the Rep-whore that he is! ---^ :D

> Is there already a calculator for Ubuntu / Debian in Human Readable format or do I have to write one?

@Fabby no, I don't think any longtimer minds answers... :)

@vidarlo N0rbert answered one of mine today...

(And it was a dumb one)

answer: there are already dozens, you just need to define “human readable” differently.

problem solved :)

10:45 PM

@dessert there's only one format. And that's scientific notation!

everything else is just for people that doesn't need numbers ;)

I don’t see how “50m” is more human readable than “50000000” or “50*10^6” or “5*10^7”

@dessert counting zeroes is just painful. But the real benefit of scientific notation is that you can easily compare orders of magnitude

@dessert 6.022144978×10²³ /mol is more readable than 602214497800000000000000/mol

@Fabby that may be, but millions? most calculators have thousand separators!

@dessert HP48 doesn't

but it has scientific notation :D

10:55 PM

so it’s actually “50,000,000” (or whatever separator the locale uses)

One HP48SX, One 48GX and one 50. Enough calculators for a lifetime.

@dessert Where is the 1000 separator here then? 3.141592653589793238462643383279502884197169399375105820974944592307816406286208‌998628034825342117067982148086513282306647093844609550582231725359408128481117450‌284102701938521105559644622948954930381964428810975665933446128475648233786783165‌271201909145648566923460348610454326648213393607260249141273724587006606315588174‌881520920962829254091715364367892590360011330530548820466521384146951941511609433‌05727036575959195309218611738193261179310511854

π is more readable...

@dessert :P

@fabby and more exact.

@vidarlo :D

...and anyways, you never need anything but the five first digits outside trigonometry classes ;)

10:59 PM

@Fabby predefined as “pi” in galculator :D

I'm an old fart: I've still been taught to calculate Pi as 3+1/7+1/15 (pretty acurately)

@dessert :D :D :D

the funny thing about being an engineer

Pi ~ 3.

Everythin else? Closest order of magnitude.

501 or 998? It's 10^3

@dessert I can't see it...

Advanced mode

...and I need a new media center computer

@vidarlo That's the gardener's π...

11:02 PM

choppy sound when kodi is switching album art image

i5 650 is not that old...

@vidarlo What's the Album art resolution? 4K?

@fabby 20MPX, downscaled to 1080p

should not be choppy anyway

hahaha

powered on for 70140 hours

ok, time to get a new box

Weird... Are you sure it's the CPU? Not running into swap space?

@Fabby 40M swap used, 12G free, so no.

@vidarlo Run this to be sure:

for szFile in /proc/*/status ; do
  awk '/VmSwap|Name/{printf $2 "\t" $3}END{ print "" }' $szFile
done | sort --key 2 --numeric --reverse | more

look if whatever music player you're using is not swapped out.

11:05 PM

it's not

Hmmm...

@vidarlo The only other thing I can think of is memory fragmentation: time to reboot.

@Fabby uptime 2hr

I'm guessing it's simply an old CPU.

it's 9 years...

bought the box in march 2010

If it would be video, I could have said: maybe a NUMA problem, but for music?

mm, it's just two seconds of stuttering

@vidarlo My previos laptop was 7 years and I only replaced it because of the LED backlight breaking down and I had the money for a new one saved in the meantime...

11:09 PM

playing via a QNKTC USB interface

@vidarlo How long is the cable?

~80cm

Mmmh...

Do you have a headset?

(analog port, not USB)

Do you still have the problem?

I do, but I will rather support a second or two of stuttering than using on board audio :D

Why? The on-board audio is a speaker???

:D ;-)

11:13 PM

its noisy as hell :P

Time to get a new box then...

yep, my conclusion as well

got a new box remote for now :}

Hetzner has some rather sweet servers for 30EUR/month. I7-6700 with 32GB RAM and 2x500GB S-ATA SSDs

decentish irc box :}

and hosted in Finland

@vidarlo Finland?

Finland.

actually quite neat, in .de. routing meant that I got at max ~450Mb/s to Hetzner, in .fi I get the full gigabit :)

@vidarlo I can't believe I'm actually watching this...

11:23 PM

hahaha

don't blame me tomorrow

WinEunuuchs2Unix

11:39 PM

@Fabby Fabby I upvoted @vidarlo's answer :)

@WinEunuuchs2Unix so much for deleting it... :}

user image

WinEunuuchs2Unix

It's the first "Frame Challenge" I've seen, highly worthy for undeleting on that basis alone :)

@Fabby I've given away 3,660 upvotes. That is more upvotes than I've received. So I'm really a Rep giver not taker :p

@WinEunuuchs2Unix Probably because you ask too good questions :)

WinEunuuchs2Unix

@vidarlo Naa I don't ask that many good questions. The calculator with Tetra, Giga keys is kind of a good one though I think.

11:47 PM

6 mins ago, by Fabby

user image

@WinEunuuchs2Unix The only good question I ask are the ones I answer myself...

but IMHO there should be more frame challenges on AU

@WinEunuuchs2Unix askubuntu.com/users/344926/fabby?tab=questions

There's a lot of instances where the answer is really that the user should not be doing that

3

WinEunuuchs2Unix

@Fabby I had no intention of answering the calculator question after three days. I just got lucky having a day off and stumbling across Python GUI calculator code I could quickly adapt.

@WinEunuuchs2Unix When I joined here, I did that more often: share knowledge...

I had it happen to me too to find an answer after I posted the Q.

Lemme look for it.

@WinEunuuchs2Unix found the answer more than 1 year later

11:52 PM

@Fabby galculator

@dessert Ah...

@Fabby it simply allows to define own constants, and pi is predefined as 3,14159265359

WinEunuuchs2Unix

@dessert but you can't press T for trillion...

user image

@Fabby and you can redefine it ;D

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