/dev/chat

I've stepped off the deep end finally. I was building kde kf5+plasma5 from the release but now am building directly from the kde git repos. <3 gentoo.

Faheem Mitha

@casey Brave

derobert

@strugee Sarge????

Surely you must be joking. That's not even wheezy - 1. It's wheezy - 4.

Faheem Mitha

3:24 PM

Does anyone know an efficient way in kde to bring up the window of an app? I can grep for the process and know the name of the app. But bringing it into plain sight is not so easy.

derobert

@FaheemMitha the magic launcher thingy can do it

I forget its proper name. I think it defaults to meta-F2

Not the K menu launcher. The other one.

@FaheemMitha ah, it appears to be called the "run command interface"

Default is Alt-F2

Faheem Mitha

Won't this just bring up another instance? And suppose there are multiple ones? How does it choose?

derobert

@FaheemMitha No, you can search for window titles. Then it'll give you an 'activate running window on workspace N' option

casey

@FaheemMitha if you have hot corners (or edges) setup, you can assign one to "show all windows" and then pick the window you want to bring to the top

derobert

There is also xwit and wmctrl

At least one of those should work if you want to script this.

(I'd try wmctrl first).

casey

3:37 PM

^^^ kwin should interface with that nicely

Faheem Mitha

@derobert Ok, I'll try it.

That seems to work. Thanks.

Seth

@FaheemMitha That's.. an interesting name.

Anyone but me see anything... wrong with this ad?

casey

-a and -R are the options you want to look at @FaheemMitha. -a activates by switching to the desktop the window is on and raising it and -R brings the window to the current desktop and activates it.

@Seth maybe that person really is a guru and installed GNU/Linux on their iphone?

derobert

@Seth Well, I think someone has a long way to go to guru status if they're trying to use a phone without turning it on first...

@casey I hear Linux has been installed on iPods, so maybe?

Faheem Mitha

@derobert How can you tell its not on? Can you install Linux on an Iphone?

Maybe the phone isn't relevant to the guru thing. Maybe the point is that smart and cool people use iphones.

@Seth Both those names sound a bit weird to my ears. Gnosmirc sounds like someone throwing up, for example.

derobert

3:49 PM

@FaheemMitha Well, at least the screen isn't. And typically when the screen isn't, neither is the touch sensor...

Faheem Mitha

Then again, LT apparently once thought Freax was a good name for his kernel.

@derobert I'm impressed you can tell so much about a screen in half-profile. Maybe it is in power saving mode?

casey

@FaheemMitha phones these days have really good viewing angles

Faheem Mitha

@casey oh

casey

though I will add my motoX can will turn on a very small portion of the screen when a notification comes in and and there won't be much to see, though If i touch the notification I do get a bit more of the screen to light up.

Faheem Mitha

@casey That's pretty fancy. I didn't know these gadgets could turn on a bit of the screen.

derobert

4:07 PM

@casey Yep. Can fairly clearly see the screen on my Nexus 5 from looking almost parallel to the screen. Viewing angle must be almost the entire 180.

Colors/brightness is a little off, but can still clearly see its on.

Also, I bet it was off because that makes the photo shoot easier, and then you don't have any rights to clear...

(Who owns the copyrights to that phone desktop background? The icons? Etc.)

Faheem Mitha

Trying to connect via ssh tunnelling for this smuxi thing. Debug error:

2014-08-25 21:42:13,341 [Main] INFO Smuxi.Frontend.EngineManager - Connecting to: tcp://127.0.0.1:7689/SessionManager
2014-08-25 21:42:13,747 [Main] ERROR Smuxi.Frontend.Gnome.EngineManagerDialog - System.Runtime.Remoting.RemotingException: Tcp transport error.

There's a lot more, of course, but does anyone have any idea what is wrong here?

derobert

Sounds like a question for the site.

Faheem Mitha

@derobert mmm

derobert

4:38 PM

Hmmm. Anyone know of a fast and reasonably secure PRNG command-line program that'll output more than 2GB? OpenSSL's rand command seems to have a 2GB limit.... And cat /dev/urandom doesn't do more than ~15MB/sec on my machine...

/me wonders if encrypting /dev/zero is fast enough

OK.

openssl enc -e -in /dev/zero -K 9e53befe67efab7bf5e2dfcb2cfb8b8e -iv 1b9704f8cf1b8dbd7150791ffed0d9aa -aes-128-ctr  | pv -pterb > /dev/null

gives ~300 MB/sec. So that's fast enough. Obviously, I shall use a different key and IV.

Braiam

5:00 PM

success!

derobert

@Braiam ?

Braiam

@FaheemMitha the reliable power grid of my country decided to be not-so-reliable while I was installing systemd

@derobert I switched my 32-bits debian to 64-bits live

derobert

Ah.

@Braiam Sounds like its time to get an UPS...

Braiam

@derobert I want to buy a real one... not the thing that sell here

derobert

@Braiam You can't get an APC or similar there?

Braiam

5:08 PM

@derobert no, only brands that you never heard about...

Faheem Mitha

5:23 PM

@Braiam So, not really so reliable, after all.

@derobert R has a random number library, which is fairly good.

Not sure what PRNG means though.

Oh, pseudorandom number generator

Braiam

@FaheemMitha not at all

Faheem Mitha

Ssh trivia question: I have an entry in .ssh/config.

Host some_name
Hostname some_ip_address
ForwardX11 yes

Never mind, found the explanation.

Ditto for the smuxi thing. I really am dumb sometimes.

derobert

5:45 PM

dl.dropboxusercontent.com/u/14889463/Zia-sda-smartlog.ods <--- smart log from failing HDD...

Faheem Mitha

Wow, that's a lot of choices. And it doesn't even mention znc.

alternativeto.net/software/quassel-irc

derobert

Amazing how fast it decided "OMG ALL MY SECTORS ARE BAD!!!"

Faheem Mitha

@derobert How did you make the graph?

derobert

@FaheemMitha Insert -> Object -> Chart

Braiam

libmeanwhile.... wtf...?

> libmeanwhile1 - open implementation of the Lotus Sametime Community Client protocol

casey

5:59 PM

@derobert same, my nexus 7 and moto X are very nearly 180 degrees

probably about 178 before glare obscures the screen image, at least in my current lighting situation

Patrick

6:12 PM

Can someone explain to me how this question got marked as a dup?

1

Q: Top show high CPU on process but idle on load average

I am running FreePBX on DigitalOcean VM. I am facing some call dropping issue in Asterisk. When looking at "htop", "top" and FreePBX GUI, I see different results of CPU utilization and can't understand if my VM is OK or needs attention w.r.t CPU. Load average shows nearly idle system while CPU ut...

load-average

I honestly don't see it. There are 2 processes using a combined total of 85% CPU, the load average should be a lot higher than 0.00

Braiam

@Patrick unix.stackexchange.com/posts/150689/revisions

at first that's exactly what the asked

Faheem Mitha

@derobert oh

@casey You have two phones?

Patrick

Ah, with the original question, I guess at a glance, I can see how it might have seemed like a dup. but reading the whole thing and looking at the screens to me makes it clear what is being asked.

casey

@FaheemMitha nexus 7 is a tablet

Faheem Mitha

@casey oh

Braiam

6:18 PM

he seems to ask why when a process has 74% of usage his load average is 0

astericks is sleeping so it doesn't count towards the load averg.

Patrick

It might have been sleeping at that exact moment when top inspected the process, but the fact that the CPU % is > 0 indicates that it has been running

Braiam

twice?

Patrick

Also, top only inspects the main thread when looking at the status. if any of the threads are active, it'll still show S

Faheem Mitha

6:45 PM

Hi @Patrick

Patrick

/me waves

Faheem Mitha

@derobert well, i decided to ask a different question about the smuxi server.

I just can't get over that name.

@Patrick so you have @slm working with you now?

Patrick

@FaheemMitha Yes, we work together. And not together, as he's half way across the country :-)

Faheem Mitha

@Patrick 21st century working-together.

He's still in NY then?

Patrick

As far as I know :-)

Faheem Mitha

6:59 PM

Shame, you don't get to hang out at the pub then.

I guess, since that is the US, that would be bar instead.

casey

we have pubs in the US, and they are generally either English or Irish themed establishments. Good to know the location of when a good futbol game is on.

Faheem Mitha

@casey futbol?

I decided to annoy @Braiam and add the debian tag to this.

Ramesh

Hi all, do I need to have static IP set for my host in order for the KVM to run?

Seth

@FaheemMitha needs more evil laugh ;p

Braiam

@FaheemMitha >:(

Faheem Mitha

7:11 PM

@Seth Muhahhahhah :-)

Seth

@FaheemMitha That's better ;p

Faheem Mitha

So, should I follow that pages advice? That is the question.

Seth

@FaheemMitha unixtools.com/linux-runlevels.html

Faheem Mitha

@Seth I know approximately what runlevels are, but doesn't the system go through multiple runlevels on the way to the "final" runlevel?

Seth

that lists 3 "multiuser" run levels.

That was all I was getting at.

Faheem Mitha

7:17 PM

Or does it just go into one runlevel? I don't know the mechanisms involved.

Seth

@FaheemMitha That's what I can't remember :(

Faheem Mitha

@Seth Ok.

Braiam

@FaheemMitha no

Gnouc

@FaheemMitha: The system only boot in to one runlevel

Faheem Mitha

@Braiam So it only hits one run level at a time? What if you switch runlevels?
Does such a script then execute again?

casey

7:22 PM

@FaheemMitha a run level switch runs all of the stop scripts in the current level and then all of the start scripts in the new level

Faheem Mitha

@Gnouc Ok. Thanks for the reply.

@casey So it would stop it and then start it. But in the example, there is no stop.

I looked at the Debian init scripts. They all look horribly complicated.

I don't want to spend half a day trying to write my own.

Gnouc

@FaheemMitha: You must write your own, if you want to more controls

You can see my updated answer for an example

Faheem Mitha

@Gnouc bummer

Patrick

oh wow, SE is down

casey

@FaheemMitha look at a simple one like /etc/init.d/hwclock.sh. This just defines a function that takes an argument then a switch to handle the argument being "stop", "start", etc, then the main code calls that function

Gnouc

7:27 PM

otherwise, you can get an example from /etc/init.d directory

Faheem Mitha

Chat was down just now, at least for me. But just for a minute.

Patrick

> Stack Exchange is currently offline, we'll be back shortly!

Gnouc

Bang: Stack Exchange is currently offline, we'll be back shortly!

Patrick

heh:
> if we get here, that means even the offline pages on sstatic are offline

in the source code to the offlline page. they're down hard :-)

Faheem Mitha

These init scripts seem to automatically background themselves. Is that a feature?

@Patrick ?

Patrick

7:29 PM

the offline page is offline

Faheem Mitha

Are these outages scheduled?

Seth

sometimes.

Faheem Mitha

@Patrick Oh, something unexpected happened?

Patrick

@FaheemMitha middle of the day? i highly doubt it

...middle of the day US time

casey

  1 test()
  2 {
  3     case "$1" in
  4         start)
  5             #START command here
  6             ;;
  7         stop)
  8             #STOP command here
  9             ;;
 10     esac
 11 }
 12
 13 test "$@"

Seth

7:30 PM

Just keep an eye here: twitter.com/StackStatus

StackExchange Status

@StackStatus

Status updates for the Stack Exchange network, including http://t.co/VY1vdMiR. You can also find more detailed updates on http://t.co/uCcZjNx5.

272 tweets, 1.5k followers, following 1 users

yay onebox.

casey

that is about the minimalist example for an init script

Seth

@casey that doesn't look too complicated, actually.

Gnouc

@FaheemMitha: Look at /lib/lsb/init-functions for more details about init function

Faheem Mitha

@Gnouc ok

@casey Thanks.

Braiam

@Seth check samba or nfs-mount ;)

Faheem Mitha

7:33 PM

@Gnouc maybe put some of that in the answer.

Does U&L currently have much stuff about roll-your-own init scripts?

And we're back.

Gosh, I was starting to have withdrawal symptoms.

@Braiam businessweek.com/news/2014-08-20/…

how does DR do on this front?

Gnouc

@FaheemMitha: Updated, add a link to good explanation of /etc/rc.local usage by Gilles

Seth

A minor firewall change had some very ill effects, we have reverted and are digging into the issue.

Tweeted by StackStatus on August 25, 2014 at 7:36 PM

Faheem Mitha

@casey you could add that, or similar, as an answer

@Gnouc Thanks. does the smuxi server example script look reasonable?

Gnouc

7:49 PM

@FaheemMitha: You mean usable?

Faheem Mitha

@Gnouc Right

Gnouc

I think it's OK

Faheem Mitha

@Gnouc Ok, thanks. You could copy it into the question, in case the blog post disappears.

Gnouc

Although it does not use init function, it uses start-stop-daemon directly

You can read man start-stop-daemon for more details

Faheem Mitha

Hmm, it would need its own user.

Are special user/groups normal in this kind of usage?

Gnouc

7:56 PM

@FaheemMitha: It depend on you

Braiam

Is dangerous out there kids!

Faheem Mitha

@Gnouc ok

Seth

@Braiam ouch.

Faheem Mitha

then I'd have to have a separate post-inst script for creating the user/group.

Gnouc

You can use nobody :)

Faheem Mitha

8:12 PM

@Gnouc I can?

Isn't that reserved for backup?

Gnouc

You can, proftpd also use nobody as default running user.

Faheem Mitha

@Gnouc Oh, good to know.

Braiam

nobody seems important... for being a nobody D:

Faheem Mitha

@Braiam Huh?

@Gnouc are there a lot of 'nix fans in Vietnam?

Gilles

8:43 PM

1

Q: "Firewall" for X applications

I don't want proprietary Skype directly accessing my Xorg server. I've already taken measures securing filesystem, network, processes/IPC, but there still a plenty of spying possibilities using X alone. Currently I use Xvfb+x11vnc+vncviewer, but it is not convenient: copy&paste works poor, no sy...

linux security privacy

Braiam

9:17 PM

@Gilles seems doable... but I wonder if anyone would take the effort when people is starting to move to wayland

Faheem Mitha

So, do the init scripts automatically handle backgrounding, or is the writer on his/her own?

Braiam

also, if I'm not mistaken the xorg protocol need a bunch of unnecessary things to be compatible

Faheem Mitha

@Gnouc what do you think of the Gentoo script posted below?

The eend things looks peculiar. I don't recognize that.

Gilles

9:34 PM

@Braiam does Wayland actually work now?

with real applications, I mean, not just glxgears

Braiam

@Gilles without a xorg-xserver in between? no

at least I haven't tested going full wayland way

but saw several packages that depends on specific libraries of wayland

Faheem Mitha

9:58 PM

In KDE from time to time I do something to make the screen turn into a bunch of tiny icons. can anyone tell me the command for that?

drs

10:09 PM

I don't think U&L is the place for this very well-written question. ServerFault? SuperUser?

Braiam

@drs don't ever send non-professional production (aka personal, testing, development) questions to Server Fault

drs

@Braiam I guess that's open to discussion?

Gilles

10:25 PM

@drs No. SF is a very exclusive crowd. But I asked an SF mod about this particular question and he said yes.

drs

@Gilles ah, k

Gilles

10:52 PM

do we really need the efficiency tag? Should it be synonymized to performance?

Braiam

@Gilles seems that that is the actual usage of the tag

btw, wut unix.stackexchange.com/q/110564/41104

arg... unix.stackexchange.com/review/suggested-edits/59249

Braiam

11:48 PM

@Gilles suggested the synonym

@Gilles isn't easier just retag that question? unix.stackexchange.com/tags/scripting/synonyms

Gilles

@Braiam retagging won't handle other questions where someone might create the tag

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