Ask Ubuntu General Room

As found in my quick research online, particularly from this answer on another askubuntu.com question, the file chooser and save as dialogues are related to the graphical toolkit upon which an application is built, and in no way related to default file manager. Since most programs use gtk toolkit...

Nathan Osman

The Qt file chooser more closely resembles the Windows file chooser dialog.

RolandiXor

@NathanOsman I can't get it to work either. I'm not quite sure why, but even with the modifier key (forgot what it is), it doesn't work since about 14.10, even on nightlies.

Nathan Osman

At least it's not just me :)

RolandiXor

Funny enough though, it rudely snaps points to each other (and to the centers of other objects) without asking, and I haven't found a way to stop it O_o.

Nathan Osman

2:09 AM

Ta-da: facebook.com/nitroshare

Serg

anybody knows if its possible to prevent battery from charging ? acpi event perhaps ?

RolandiXor

Never heard of that one being possible.

Nathan Osman

@Serg I doubt it - charging is usually a part of the battery circuitry.

Is it possible to remove the battery?

Serg

Don't know. askubuntu.com/q/660385/295286

I can write a quick script to send notification when battery hits 90% , then the user should be able to remove the battery

Mateo

@Serg try unity ;)

Serg

2:19 AM

@mateo same dialog across the board. Unity, gnome. Everywhere !

Mateo

Oh, certain programs with built-in ones...

File bug on that program?

Serg

I don't think it's bug report worthy. Besides, I'm fine with those dialogues. Op is not.

Besides, hardcodes features aren't bugs. Right?

Mmmm, chamomile and mint iced tea. Yummmy

Mateo

9

Q: Is there some way to get a more usable file chooser dialog?

On other operating systems the file chooser dialog in applications lets you do things like: see a larger preview of images in the current directory create a new folder change the view of the current directory between vertical list, horizontal list, small icons, large icons, thumbnails etc I a...

So, yeah... Basically what you said, it is a no, and a duplicate ;)

RolandiXor

@Serg exactly :)

Mateo

0

Q: Replace GTK file dialog with alternative

Is there any way to configure GTK programs to use a different file dialog? Reading ancient articles on the default dialog and seeing no difference to the current version does no bode well for it's improvement in the near future. I've read this question, but I appear to be one of the few to do s...

linux file-management arch-linux gtk

Serg

2:29 AM

And no one answered that

Mateo

5

Q: Customizing GtkFileChooser

GTK+ noob question here: Would it be possible to customize the GtkFileChooserButton or GtkFileChooserDialog to remove the 'Places' section (on the left) and the 'Location' entry box on the top? What I'm essentially trying to do is to allow the user to select files only from a particular folder ...

gtk

Seth

@Serg resists urge to make lousy pun with that

@RolandiXor \o

Serg

@Seth please do make pun with that, I am in good humor today :)

Seth

@Serg I was going to say it's called an assistant, not a wizard. Only qt traitors call them wizards ;p

Plot twist: I am a Qt traitor.

ok, I feel icky now. That pun was baaaaad.

Mateo

So does that mean you are for or against?

Serg

2:36 AM

Personally, I care not for GTK or Qt as long as they get the job done. Besides I've no clue about them anyway. My knowledge ends on basic C, Java, and shell scripting. And some awk (which is a big chunk of my rep)

Nathan Osman

<--- has respect for someone who knows AWK.

If you're into GTK, there's always Vala.

RolandiXor

@Seth o/

Nathan Osman

I've never used it (not a big GTK fan)...

RolandiXor

@Serg SQUAWK

I wanted to star Serg's message about Awk as well but I don't want to hog the stars :P

Nathan Osman

There really aren't too many languages suited for GUI development. Java has AWT & Swing, C/C++ has all of the usual toolkits (GTK, Qt, FLTK, etc.), and Python bindings exist for most of those. Vala is sort of its own toolkit.

Some of the other toolkits build on existing ones, for example wxWidgets builds on GTK.

Serg

2:43 AM

@NathanOsman so if I were so ambitions as to start learning GUI programmming, where should I start ?

Nathan Osman

Well, I'm a huge Qt fan, so I would recommend Qt in either C++ (hard) or Python (a bit easier).

If you've never used C++ before, jumping directly into GUI programming probably isn't such a good idea.

Serg

@RolandiXor here's another awk answer for you :) askubuntu.com/a/660398/295286 Maybe you can star that one as well

So everything seems to point me to python after all

Nathan Osman

Python is the only language I'm aware of that's (1) easy for beginners to pick up and (2) powerful enough for advanced users.

Usually a language falls into only one of those categories.

(For example, VisualBasic is most certainly not suited for complex applications and C++, although extremely powerful, is not suited for beginners.)

Python seems to buck the trend.

Serg

Oh, Visual Basic ! i remember that. Our professor assigned us to do calculation program for cantilever bar (civil engineering, obviously not my field). Everybody struggled with that

Nathan Osman

Though I tend to avoid Python for desktop applications since (1) it uses quite a bit of memory, (2) is often difficult to deploy, and (3) the CPython interpreter includes the GIL (global interpreter lock), preventing true concurrent execution.

Seth

2:51 AM

@Mateo Neither I guess. I like both Qt and GTK.

I personally find GTK a bit easier to work with, but Qt to be more powerful.

Nathan Osman

Python includes its own built-in toolkit: TkInter.

Serg

@NathanOSman so for what kind of applications Python can be used ? server side ?

Nathan Osman

But take my word for it - don't use it!

@Serg Yup, all of my web apps are written in Python.

It's great for CLI scripts too.

Serg

@NathanOsman by the way, you might like this question askubuntu.com/q/660369/295286

RolandiXor

@Serg \/[]{})(.:;?!

Serg

2:56 AM

Ubuntu Virtual Machine set up along side Win7

Nathan Osman

@RolandiXor Is that a forkbomb? :P

Serg

@RolandiXor no fork bombs for me, buddy

Besides I use mksh. Fork bombs are bash thing

RolandiXor

@NathanOsman a nuke

Nathan Osman

@Serg Sounds like a job for Xen.

RolandiXor

lol I don't know what I typed :D

Nathan Osman

2:57 AM

But that would require a 15-page answer.

Serg

Oo em . . . .that might be too long

Nathan Osman

P.S. apparently Xen supports PCI passthrough so one could (in theory) run Windows as a guest and still give it exclusive access to the GPU.

I might try that someday.

You would require a Linux distro for dom0 though.

Still, it would be neat to have three different flavors of Linux and Windows running concurrently on your computer.

One of the really neat things you could do is live migration - move a running operating system from one machine to another.

Serg

@RolandiXor isn't 500 rep a bit too much ?

RolandiXor

@Serg if you want to get people to actually do something and you have the rep to give away, it's worth it :)

P.S. this if for a client - so I kind of want to get it to work.

:D

Serg

understandable

RolandiXor

3:12 AM

(N'aw mean)

Nathan Osman

Yup, I've asked questions on Stack Exchange sites while working for clients too :)

@RolandiXor I recently switched to Chromium. Ducks.

Serg

3:30 AM

Chromium Ducks ? Ooo, that should be a fun release :D

Seriously someone should make Ducks OS. Boot sound ? Squawking ducks !

Nathan Osman

There's a joke about rubber ducks in there somewhere.

Serg

I think I've posted that in the chat before, but someone has made Pony OS, referece to MLP

@NathanOsman LaTex Ducks Reader perhaps ? :D

apt-cache search rubber

rubber - automated system for building LaTeX documents

I called it !

gtg guys, see you later

RolandiXor

3:45 AM

@NathanOsman :D

Nathan Osman

I still like Firefox's user experience but it was just becoming unusable on my desktop.

Scrolling was jerky, opening tabs took forever, and things weren't always working right.

RolandiXor

I've switched Opera, believe it or not, and as of yesterday I'm using Maxthon more and more.

I'd have switched to Vivaldi but flash won't work

Nathan Osman

One day Flash will die.

RolandiXor

Firefox is "nice", but I've still got a problem with their position on you know what.

Nathan Osman

@RolandiXor Yeah, Mozilla itself is not really... well... I don't agree with some of their decisions. Let's put it that way.

Both corporate decisions and technical ones.

RolandiXor

3:57 AM

@NathanOsman back

Same here.

I only use Firefox occasionally now. I like it as a browser, for it's customizability and such, but otherwise, I'd rather move on.

A.B.

4:36 AM

Morning all :)

Nathan Osman

I wonder why George didn't greet you...

Le sigh...

RolandiXor

@GeorgetheDev.

Nathan Osman

I fixed him now. (He keeps getting disconnected for some reason.)

RolandiXor

He has troubling focusing. He may need sleep or food.

Nathan Osman

I'll give him some fish.

(He prefers cod.)

RolandiXor

4:50 AM

Nice choice.

A.B.

He @GeorgetheDev :)

Thank you for the fish. ;)

Serg

@NathanOsman should have told me before. I had sardines tonight. Could share

A.B.

5:12 AM

@Serg Sardines?

:)

Serg

@A.B. hehe you want some too ? I can share my last can

SmokeDetector

[ SmokeDetector ] Bad keyword in title: How To Build Muscle Quick by user438789 on askubuntu.com

A.B.

@Serg Sure, give me one or two :)

Nathan Osman

5:30 AM

I had a "fun" time patching the Stagefright vulnerability on my Nexus 6 today.

A.B.

With some bread

Nathan Osman

My phone downloaded the update ZIP but of course it couldn't be automatically applied because the phone was rooted and had a custom bootloader.

So I reflashed the system partition and tried again but it still wouldn't apply the ZIP.

So I had to reflash recovery before I was able to successfully apply the patch.

A.B.

@NathanOsman :) I have disabled the automatic MMS download.

Nathan Osman

Then I had to re-root the phone.

@A.B. That's a good option until you can apply the patch.

A.B.

Common this are simple steps ;)

Nathan Osman

5:33 AM

They are fairly straightforward if you know what you're doing.

A.B.

Sure, I have to update in the next days

Nathan Osman

But they are also slow and tedious.

A.B.

Which ROM do you use?

Nathan Osman

If you don't know what you're doing, I can almost guarantee you'll erase the userdata partition and your data will be gone forever.

A.B.

Yes, that's right :)

I have to update the Nexus S of my wife too

Nathan Osman

5:34 AM

@A.B. I use a stock kernel with kexec enabled.

My Nexus 5 had Stock, Cyanogen, FirefoxOS, Ubuntu Touch, and SalfishOS installed (yes, all of them).

RolandiXor

5:49 AM

Hax.

Nathan Osman

None of those (other than Cyanogen) work on the Nexus 6, AFAIK.

Takkat

6:12 AM

Ha ha - this downvote reason is a new one:

sorry had to -1 this one. looks like a collection of "everything" — IIIIIllllllllIlllllIIIIIIIIlll 4 hours ago

Journeyman Geek

6:29 AM

@NathanOsman: at the same time?

A.B.

@serg my solution =)

0

A: merge two different files having different line number of lines

Simple using awk ;) awk 'FNR==NR{a[i++]=$0; max=i; next} {if ((NR % max) == 0) {i=max-1} else {i=(NR%max) - 1}; printf "%s,%s\n",$0,a[i]}' file2 file1 Example output 61346877,212 41724134,1231 85406965,324234 59647779,213 25199749,212 86213,1231 45417131,324234 41905714,213 19415458,212 18285...

Rinzwind

@Serg yes. thanks :D

Serg

oO gsettings not working in gnome 15.04 ?

My script with setting languages works just fine in Unity, but not in gnome

in fact even manually it doesnt work

gsettings set org.gnome.desktop.input-sources current 3

no effect, I'm still with source 0

A.B.

6:46 AM

@Serg try gconftool-2 or gconftool

Serg

@A.B. your awk version is pretty cool ! I'm still trying to understand how it works

A.B.

@Serg :)

Serg

Ooooo, so you read small file first, get it into array, and count the number of elements as max

A.B.

yes

Serg

After the Number of records total becomes unequal to number of records in file, it goes to the second bracket

A.B.

6:49 AM

=)

modulo is your friend

Serg

that's clever, very clever

wish I could upvote second time

A.B.

@Serg Your commendation is enough =)

@Serg By the way rubber, do you have an example?

yes, I know man rubber ;)

Serg

please excuse our technical difficulties. Serg is currently unavailable due to laughing at man rubber. Bad request 404 not found

Nathan Osman

@JourneymanGeek yes, at the same time.

@Serg 503 Service Unavailable?

:P

Serg

Duck OS all the way !

oh lawd, where was I ?

oh, yes, awk

dammit , with the birds ! ducks, awks, penguins ! I even changed all of my hostnames to birds. Except one, anaconda. insert Nicki Minaj joke here

Nathan Osman

6:57 AM

Eh no.

Anyway, bedtime.

Goodnight all.

George the Dev

@NathanOsman See you later.

Nathan Osman

@GeorgetheDev Thanks!

George the Dev

@NathanOsman You're welcome!

Serg

@NathanOsman good night ! sweet dreams !

A.B.

cu @NathanOsman

Serg

7:03 AM

@muru can I ask why on askubuntu.com/q/660451/295286 you said chmod 777 is a bad idea ? Granting rwx permission to the group and others ?

SmokeDetector

[ SmokeDetector ] Bad keyword in body, pattern-matching website in body: Caralluma is just a heavenly place, by bertlitito on askubuntu.com

Serg

@A.B. small question. If file2 contains trailing newline at the end, wouldn't that also get stored in the array ?

referring back to the awk code

A.B.

hmm, yes

Serg

let me test

yeah, that appears to be the case

or not, wait

yup,

$ cat -A file2
212$
1231$
324234$
213$
$

result for that is

$ awk 'FNR==NR { a[i++]=$0; max=i;next} { if ((NR % max) == 0) {i=max-1} else {i=(NR%max) - 1}; printf NR":"FNR":%s,%s\n",$0,a[i]}' file2 file1
6:1:61346877 A,212
7:2:41724134,1231
8:3:85406965,324234
9:4:59647779,213
10:5:25199749,
11:6:86213,212
12:7:45417131,1231
13:8:41905714,324234
14:9:19415458,213
15:10:1828594,
16:11:56543876,212
17:12:70603415,1231

A.B.

=\

Serg

7:12 AM

aha, if I do FNR==NR && NF that takes care of the blanks

nope

because that breaks the modulo and totals . . .

A.B.

maybe i should remove all blank lines with a command before the awk thing

:)

Serg

I think you could leave that as a side note

muru

@Serg granting write to everyone is always a bad idea, unless you explicitly mean it

Further, using octal modes clobber whatever other permissions the file has

Doing chmod +x is very different from doing chmod 555.

My standing policy is: Answer has 777, doesn't warn it's a bad idea? -1, no further questions asked.

Serg

@muru how so ? I thought letter and octal modes were the same ?

muru

@Serg Take a file with, say, rw-r--r--. Do chmod +x on it and chmod 555 on it. See for yourself.

Ah. Example was meant to be rw-rw-r--

Serg

7:24 AM

OK, with 555 i get -r-xr-xr-x

+x gives -r-xr-xr-x

same ?

muru

@Serg starting from the original permissions?

Serg

oh, wait

muru

@Serg You just nuked the write permissions you already had. +x, OTOH, doesn't affect anything other than the execute permissions.

Rinzwind

muru is correct ;)

Serg

I know he is correct, I'm just trying to understand

$ touch newfile2

$ ls -l newfile2
-rw-rw-r-- 1 xieerqi xieerqi 0 Aug 12 01:25 newfile2

$ chmod +x newfile2

$ ls -l newfile2
-rwxrwxr-x 1 xieerqi xieerqi 0 Aug 12 01:25 newfile2*

$ chmod 555 newfile2

$ ls -l newfile2
-r-xr-xr-x 1 xieerqi xieerqi 0 Aug 12 01:25 newfile2*

OK . . .

difference in write premissions

I see now

Rinzwind

7:28 AM

+x adds execution to the permissions
555 rewrites the permissions read+execute

Serg

yup, exactly right

So, 755 is safer

full permissions for the owner, read+execute for others

muru

@Serg It is? Go back to my example (the correction I posted)

Rinzwind

you hardly ever need more than 644 for files and 755 for dirs

muru

6 mins ago, by muru

Ah. Example was meant to be rw-rw-r--

Rinzwind

and if you go for 777 sticky bit would be advisable (/tmp is 777 with sb)

Serg

7:31 AM

$ touch newfile3

$ chmod 755 newfile3

$ ls -l newfile3
-rwxr-xr-x 1 xieerqi xieerqi 0 Aug 12 01:31 newfile3*

@Rinzwind 644, that's read-write for owner, read for others. For scripts we need execute as well. So 744 ?

Takkat

@Serg I always find a conversion table helpful to understand permissions.

Rinzwind

@Serg I believe on our servers scripts do no have "write" set. Just read and execute

Serg

@Takkat I know the permissions. But I was confused at first with why muru was downvoting answers that had chmod 777 there, but it makes sense now

@Rinzwind so if you need to modify script you change the permissions and when done change them back ?

Takkat

7:48 AM

@Serg knowing how they work and knowing the conversion by heart are two things I never get right... I always have to look this up. ;)

Serg

@Takkat Well, for me personally, I like to practice my octal conversion. I keep imagining those numbers as bits

6 = 110

4=010

2=001

and so on

douh . . .wait

1=001

2=010

4=100

6=110

Rinzwind

@Serg nope. we create a symlink pointing to the new updates.

Serg

now its right

Takkat

exactly what my brain suffers so much too. I can't count to more than 3 in decimal.

well, 5 when I had enough coffee

Serg

I've been through Digital circuits 1, 2, Computer Organization 1, and Process Control Systems class, so it's kinda shame for me not to know the octal, hex, and binary tables

Binary joke we all know. There's 10 kinds of people, those who understand binary and dont

Takkat

7:54 AM

you do know them but you can't rely on that ;)

Serg

True, cannot rely on memory completely

By the way, anyone knows how to list all schemas with gconftool-2 ?

--dump flag

gotta go chown my sleep back to myself. See you later guys !

@muru thanks for pointing out the bit about write permissions, by the way.

muru

@Serg welcome. Good night!

A.B.

8:29 AM

@Fabby he o/

Fabby

@Rinzwind done!

@A.B. Good morning!

I'm editing stuff...

Mmmh... Only 2 answers since my last editing spree...

user136984

Oh dear... I forgot my password! All I knew is that the previous night I went crazy and set it to something that I associate with chocolate cakes! :D

user136984

So I had to go into recovery mode and reset it as it was my user account one... :P

user136984

So I've had a fun morning! Never done that before! :D

A.B.

@ParanoidPanda common, some simple steps =)

user136984

8:39 AM

Yes, I've now realised how simple it would be for someone to break into my machine if they had physical access... Isn't that a major security risk to allow root shell access just like that? I mean what if the machine is stolen or something?

Fabby

@A.B. See comments: he forgot the @A.B.

@ParanoidPanda 3 words: full disk encryption.

Takkat

I choose my passwords carefully so that I will never forget them. "Never" can be as short as 3 hours... ;)

Fabby

And a warning:

user136984

Yeah, I've been thinking about that...

Fabby

"with great security comes great responsibility". If you fµçk up that password: you've lost everything (unless you have an unencrypted back-up in a safe)

user136984

8:42 AM

:D

Fabby

@Takkat I can remember all my passwords of the last 20 years...

Takkat

looool

user136984

I can remember the really long complicated ones (like 200 characters), however it's the shorter ones that beat me... :P

Takkat

<-- hates it when my password does not meet the requirements

Fabby

@Takkat yes... That means they're not using a hash system...

Takkat

8:44 AM

some don't want special chars... fail

others need special chars...

then they need at least one, two, three, what-not numerals, and capitals too. But not the special char I always use.

Fabby

I remember a bank a few years ago where you could only use upper case, numbers, special characters and a max length of 8

Takkat

At least I found out that a valid Ubuntu password may contain spaces.

Fabby

@Takkat :D

Rinzwind

8:59 AM

@Fabby far too late!

@ParanoidPanda nope. it is intended.

@Takkat I know one that accepts unicode chars you type but you actually need to type the unicode's code when entering the password.

Takkat

@Rinzwind which makes it even easier to remember it ;P

Rinzwind

it was a bug but a funny one :D

Fabby

9:27 AM

@Rinzwind Sorry... Did someone else butt in on time?

(oh, they did! (whew)

Rinzwind

@Fabby serg <3

@SmokeDetector what about askubuntu.com/questions/660511/safe-in-use-product ?

Fabby

@Rinzwind flagged... :-)

Ask Ubuntu Meta

10:22 AM

1

Q: Tag Warning Is Now Live for "Wireless"

Following up in the discussion about Tag Warnings on Ask Ubuntu, we have added a tag warning for wireless on Ask Ubuntu! We've only added one for now because we'd like wait until we have a better tracking system in place (which we don't have right now) before we add more. Specifically, we'd ...

discussion featured

Ubuntu Questions on U&L

10:41 AM

0

Q: Allow a user to create & read files, but not modify or delete

I would like to give a user permissions to create and read files in a particular directory, but not to modify or delete files. This is on Ubuntu Linux. I think this is impossible with standard Unix file permissions, but perhaps this is possible using ACLs? If it helps, the user will always be co...

ubuntu permissions acl

user136984

@ThomasW.: Ok, it's fine by the way, I found the 6th patch... :)

Fabby

11:00 AM

Off-line for a couple of hours!

user136984

VTC this EOL question.

Ask Ubuntu Meta

0

Q: Get rid of Windows answers?

Isn't it time to get rid of this answer and enforce the policy of closing Windows questions, here, here, ... as off-topic? I'd rather leave a comment "We're sorry, but this site is all about Ubuntu and the people here are very good at dual-booting and removing Windows, but not very good at getti...

discussion support

Rinzwind

11:38 AM

dupe askubuntu.com/questions/660535/…

blade19899

12:11 PM

Firefox 40 is out

A.B.

12:25 PM

wow

user136984

@blade19899: I know! I announced here when it came out! :D

user136984

It's great isn't it?

user136984

But what's new...? :P

Byte Commander

Don't know, I saw no change.

All add-ons still work.

Except Shumway, which probably did never really work?

I just realized that all flash content that worked after disabling adobe flash was really HTML5...

Oli

@ParanoidPanda Off-screen rendering magic I think is the biggest improvement for us. Should speed things up, lower CPU, higher economy, more stopping power, etc

Byte Commander

12:45 PM

lower CPU? Sounds great!

Could be really true... But not less RAM.

Oli

@ByteCommander Pah, who needs free RAM anyway

Byte Commander

Me!?

2G is not really much...

Run Firefox and PyCharm and there's not much left any more...

Oli

Sell kidney, buy RAM. Simples.

Sorry that's silly.

Sell friend/relative's kidney, buy RAM.

4

Serg

Swap all the things to disk !

Byte Commander

1:05 PM

Going to get a new one soon anyway, but not yet... :-/

Serg

By the way, who's on Gnome ?

A.B.

@Serg me

Serg

@A.B. oh . . . I think I asked this already , but does gsettings set org.gnome.desktop.input-sources current 1 for example switch your current language to second item of the language choices ?

It works flawlessly in Unity, but for some reason not in gnome.

A.B.

let me check

Serg

gconftool-2 hasn't given me clues as to how i can set language there

A.B.

1:19 PM

works here gsettings set org.gnome.desktop.input-sources current 1

% gsettings set org.gnome.desktop.input-sources current 1
% gsettings get org.gnome.desktop.input-sources current
uint32 1

GNOME 3.16

Serg

o.O