Ask Ubuntu General Room

GeoMint

22:07

@terdon your answer work so well i forgot i was using a virtual-machine :P

@terdon just copy paste outside and inside the virtual box as it is a native program

Zacharee1

I don't feel up to editing this: askubuntu.com/questions/693153/…

Anyone want to encourage my laziness?

edward torvalds

what is the difference if a ran script in terminal and run as service?

@kos what is the difference if a ran script in terminal and run as service?

Serg

@kos @ByteCommander By the way, I've just been thinking of this question here and I've thunk up another idea - padding filenames with something. In other words mv $file $file-TMP, then once all files are padded, actually add +10 to filename and move $file-TMP to new filename. So . . . again that's two loops . . . probably not good with large amounts of files . . . but i kind of have a sense there has to be a way to improve it . . .

@edwardtorvalds as service it runs in background, in terminal it occupies your terminal until done . . .unless you tell it to run in background

edward torvalds

22:23

@Serg what does it means 'it runs in background' ?

Zacharee1

@edwardtorvalds you don't see it running except in a task manager

edward torvalds

@Zacharee1 @Serg besides having run in background, what other feature is provided by services?

Serg

@edwardtorvalds what zacharee1 said ^

@edwardtorvalds other features . . . hmm let me think

edward torvalds

@Serg I can put a script in start-up, then why there is need for services?

GeoMint

@Zacharee1 i didn't knew there was an alien in linux ( sudo alien -d utserver.tar.gz )

Terrance

22:27

@edwardtorvalds A service runs in the background waiting to be called. A script usually runs then terminates, and is only used when directly called.

Serg

@edwardtorvalds AFAIK what's in /init folder is the services and those are basic programs that should run when you boot up . . .Your script is custom thing, it's not exactly necessary for the basic system to run

GeoMint

url: manpages.ubuntu.com/manpages/gutsy/man1/alien.1p.html

Serg

That;s why there is need for services. It's like wheels to the car

GeoMint

alien - Convert or install an alien binary package FFS :P

Serg

@GeoMint that's very descriptive title . . .(unknown) :D

GeoMint

22:29

chat made it :P i just pasted a link

kos

@Serg By the way using mv the files aren't copied / moved, their entry in the filesystem is changed but that's about it.

@edwardtorvalds Daemon is pretty generic. The idea is that everything which runs "on his own" is a daemon

edward torvalds

@Terrance what if the service script does not contain any while loop or something and it does its job one time and dies? 'services runs in background waiting to be called' why can't script wait on hard drive waiting to be run ?

@kos what if the service script does not contain any while loop or something and it does its job one time and dies? 'services runs in background waiting to be called' why can't script wait on hard drive waiting to be run ?

Serg

@kos wait wait wait, back up, woah, there ! mv doesn't actually copy the files ? Details please

I just mv'd ( renamed ) a file and inode didn't change . . .so . . .what does that mean ?

terdon

@GeoMint Glad to hear it :)

@edwardtorvalds you never answered my comment on your question. I can answer it but I don't know what you need yet. Do you need to check if i) the NIC is up? ii) you are connected to a network or iii) you are connected to the internet?

edward torvalds

@terdon ii)

terdon

22:34

@edwardtorvalds So you don't care if the internet is accessible, only the LAN?

Just parse ip link

GeoMint

@Zacharee1 askubuntu.com/questions/693153/… did he want a server or a client?

edward torvalds

@terdon yup, ok

Serg

@edwardtorvalds askubuntu.com/q/26542/295286

may be useful

edward torvalds

@terdon the thing is I wanted a trigger that will also say if the network has changed every time it happens

@terdon by network change I mean up or down

GeoMint

@Serg how you get a shorten url for question

Serg

22:38

@GeoMint Click Share button underneath the question

terdon

@edwardtorvalds Well, yiou can get the current status in $status using:

GeoMint

@Serg wow, it was so easy :P

terdon

ip link | grep -q 'enp3s5.* UP' && status="UP" || status="DOWN"; echo $status

Serg

@GeoMint yeah, it's pretty neat. I use it a lot when i need to reference a question or answer

edward torvalds

@terdon you are not getting me, who will notify me immediately if network has changed?

terdon

22:41

@edwardtorvalds Your script :) Hang on.

kos

@Serg If the inode doesn't change probably it's because the entry just gets attached to the new "branch" in the filesystem tree. Imagine a binary tree in C, I guess that's roughly the implementation of a filesystem

edward torvalds

@terdon hows my script will know that the network has changed without using a loop or something?

terdon

@edwardtorvalds Why would you not use a loop?

kos

@edwardtorvalds By the way did you see my answer here? askubuntu.com/questions/693002/… Let me know if it doesn't work for you somehow

edward torvalds

@terdon because I hate them :)

terdon

22:42

@edwardtorvalds Umm... You're going to have trouble writing useful programs then.

edward torvalds

@terdon David Foerster gave me the answer I wanted :) thanks btw

Terrance

@edwardtorvalds without a loop, you're going to have to set up a cron job to call your script every so often

edward torvalds

@Terrance nope

Terrance

@edwardtorvalds Then how do you propose that you are going to write a script as a service?

kos

@Serg By the way try to mv a big file (say in the GB order) everywhere but to another partition, it gets moved instantly

terdon

22:43

@edwardtorvalds Then please post it as an answer.

edward torvalds

@terdon yes I will

@Terrance does this helps to clear your doubt? askubuntu.com/questions/692281/…

Terrance

@edwardtorvalds That does, but that is using the Network Manager service

terdon

Ah, I see, so you won't write a service but instead add a script to /etc/NetworkManager/dispatcher.d that responds to the up argument.

edward torvalds

@Terrance that means I dont have to use loop :)

@terdon you are smart

(aplogize me for yellling)
PEOPLE NEED TO UNDERSTAND THE FACT THAT USING BASH TO DO STUFF IS NOT ALWAYS GOOD, NOT USING IT SOMETIMES GIVES YOU MORE ELEGANT WAY OF DOING THINGS, USE A TRIGGER, FOR EXAMPLE: LOOK UP NETWORK MANAGER WORKS :)

terdon

Note that this will make your approach less portable though. I don't know if that's a problem for you.

@edwardtorvalds Yes, it works by running BASH SCRIPTS!

edward torvalds

22:47

@terdon portability is not a problem

@terdon using bash always is bad

Terrance

@edwardtorvalds You never mentioned that it would be using the Network Manager to begin with.

terdon

@edwardtorvalds I'm just pointing out that your approach also uses bash. Or sh anyway.

edward torvalds

@Terrance I never said I dont want to use NM, so I never stopped any1 to suggest it to me

@terdon I said 'always'

Serg

@kos Just did that with deepin iso . . . so it does move instantly, but . . . what's going on there ? I'll need to research mv a little because up to this point I believed mv actually writes sequence of bytes that comprise a file into a new file

edward torvalds

@terdon triggers are better approach

terdon

22:49

shrugs

edward torvalds

@terdon you script might be less portable but the approach is not dumb as a loop

are we done on this? I have another question to ask...

@Serg @Terrance @kos technically what is the difference between service and a normal script?

1. People say service runs in background and does not occupy a terminal. I can make a script run using `&` or something and thus it will run in background.
2. People say service waits in background waiting to be executed when needed. Why can't I keep a script on hard drive and keep it waiting (which means do nothing to it) and run when needed?
3. People say service runs all the time in background. I can use `while` loop in my script and run it all the time.

kos

@Serg theunixschool.com/2012/08/… unix.stackexchange.com/questions/192800/…

terdon

@edwardtorvalds None really. The main difference is that a service is launched by the system (init, usually). It can be a script, usually is.

Zacharee1

Wow you people talk a lot

GeoMint

@Zacharee1 askubuntu.com/a/693171/228051 :D

edward torvalds

22:54

@terdon suppose I make a script and it is running, how do I call it terminal to know the current status of its?

terdon

@edwardtorvalds I don't understand.

What status? Whether your script is running? Use ps or top.

Zacharee1

@GeoMint nice, but they don't necessarily want to remove alien. I'd take that out

GeoMint

@Zacharee1 he said "how to remove them"

he should be more clear next time :p

Zacharee1

@GeoMint Is English your first language though? ;p

GeoMint

no, i am Greek

edward torvalds

22:56

@terdon I have made a script, ok? and it is running as a service, ok? now for example, suppose it has a counter, how can I know the value of that counter from terminal?

terdon

@GeoMint Don't worry, nobody's perfect.

GeoMint

:)

terdon

@edwardtorvalds You can't.

You would need to have your script print the value of the counter somewhere.

GeoMint

@terdon i like it more that i am greek ;)

edward torvalds

@terdon so there is no way to know the variables inside it?

@terdon is there anyway to change its behaviour by running it as, for example, service name <some argument> ?

terdon

22:58

@edwardtorvalds Not that I know of, no. I don't see how that would be possible. You might be ab;e to do something very convoluted and get certain shell variables if you export them through the /run interface but I doubt it. I think there was a question on U&L about this. Let me check.

edward torvalds

@kos whats your views ?

GeoMint

@Zacharee1 i installed alien and utorrent server into my vbox :P lol

kos

@edwardtorvalds Output to a named pipe, AFAIK that's the best way of making two scripts communicate

Zacharee1

@GeoMint heh

kos

@edwardtorvalds On what?

edward torvalds

22:59

@kos same thing i asked terdon, I have made a script, ok? and it is running as a service, ok? now for example, suppose it has a counter, how can I know the value of that counter from terminal?

Terrance

@edwardtorvalds For a loop, you could output the variable into a type of log that you could then call at anytime to see where it is at.

cat log

edward torvalds

@Terrance ok, but is there anyway to change its behaviour by running it as, for example, service name <some argument> in terminal?

kos

@edwardtorvalds As terdon said you can't

@edwardtorvalds chat.stackexchange.com/transcript/message/25119353#25119353

edward torvalds

so sad :(

@kos @terdon by pipe you mean like this? ls | grep something ?

Serg

@edwardtorvalds well, you cannot change behavior during run-time, but if you could always choose to log its output

BRB guys, need to switch buildings

edward torvalds

23:02

changing the behaviour of the running script is what i wanted :(

terdon

@edwardtorvalds Yes, that's a pipe. Don't use them with ls though, that's usually a bad idea.

Mateo

FIFO's are FUN!

terdon

@edwardtorvalds What are you trying to do, there's probably another way.

edward torvalds

@terdon why is that so?

terdon

Variables are internal to the script, they can't be shared.

@edwardtorvalds What, the ls? Read the link.

edward torvalds

23:03

@terdon got the variable thing

Terrance

ps -ef | grep -v grep | grep "scrub -f" > /dev/null
check=$?
while [ $check -eq 0 ]; do
rm -f /tmp/results
for CD in `cat $1.drivelist`; do
DRV=`basename $CD`
tot=`cat $DRV.tmpscrublog | tr -cd ".|" | wc -c`
tot="$(($tot - 1))"
perc="$(($tot / 4))"
echo "Drive $DRV Scrub Complete: $perc%" >> /tmp/results
done
clear
cat /tmp/results
sleep 4
ps -ef | grep -v grep | grep "scrub -f" > /dev/null
check=$?
done

^Is a while loop until the check changes

edward torvalds

@terdon I know what is ls, but why not to use pipe with it?

terdon

@edwardtorvalds Because it breaks very, very easily. Read the link.

kos

@edwardtorvalds Almost: they look like file (i.e. you can see them in your filesystem and output to them as they were files) but they act as a pipe, and a script / processes can read from them. en.wikipedia.org/wiki/Named_pipe. What are you after exactly?

edward torvalds

@kos basically I want to change the behaviour of a running script based on events :(

terdon

23:05

@edwardtorvalds You can do that, but you have to do it from the script itself.

edward torvalds

(meanwhile if anyone has energy to debate: askubuntu.com/q/693173/294611 )

terdon

Probably by using a loop.

edward torvalds

@terdon again a loop :(

terdon

@edwardtorvalds Yes. You will have to get over your dislike of loops. They are very useful tools.

edward torvalds

@terdon so we cant call the running script from terminal right?

terdon

23:06

?

kos

@edwardtorvalds Post a question about it, but be precise. "I want to change the behaviour of a running script based on events" is quite broad ;)

edward torvalds

@terdon @kos thats enough for today :) thanks :) I got your points :) gotto love loops

GeoMint

@Zacharee1 askubuntu.com/suggested-edits/87321

edward torvalds

0

Q: technically what is the difference between service and a normal script?

People say service runs in background and does not occupy a terminal. I can make a script run using & or something and thus it will run in background. People say service waits in background waiting to be executed when needed. Why can't I keep a script on hard drive and keep it waiting (which mea...

Zacharee1

@GeoMint why the kbd around the command?

edward torvalds

23:10

why vote down its a logical question

GeoMint

it has nice look :P

i can change that

Zacharee1

Yeah

Seth

scripts can be services. Services aren't always scripts.

terdon

@edwardtorvalds I didn't downvote but we just asnwered that here. Why are you asking again?

Seth

@GeoMint Please use proper code formatting for code :)

edward torvalds

23:11

not convinced enough

terdon

The difference is in the way they are run more than anything else. You run scripts, the system runs services.

edward torvalds

ok

Seth

four spaces for independent lines, backticks for inline.

Zacharee1

Or ctrl+k on highlighted text

GeoMint

@Seth can you fix it?

Seth

23:12

just did :)

GeoMint

ohh ok :D

community work :D i like this site

terdon

@Seth Or did you?

askubuntu.com/posts/693153/revisions

kos

@edwardtorvalds By the way there's no "technical" difference, it's about how you want to call things. A service run constantly between it's started and stopped, and therefore acts as a daemon. A script may act like that as well (in fact lots of services are actually script). There's no technical difference, the difference is in what you understand from the two terms.

Zacharee1

@terdon is this an edit war?

GeoMint

hahahaha

its a golf day :P lol

terdon

23:15

@Zacharee1 Hardly! Seth's edit came through while I was working on mine.

Zacharee1

ha! lol

terdon

And mods don't have edit wars. We have differences of opinion expressed through sequential editing.

5

:P

Seth

@terdon okay, so I didn't run the grammar check ;p

edward torvalds

@terdon let me bite you with this sentence "A service run constantly between it's started and stopped," what if my service has just one command in it, say, ls. how can this command run always from its start to stop? does this mean it is run every second?

Zacharee1

:l

Mateo

23:16

while true do ls sleep 10 done

edward torvalds

@Mateo it contains just one command, ls

Mateo

but format it and stuff

mine didn't

Zacharee1

ctrl+k it @Mateo

terdon

@edwardtorvalds So how do you make that into a service? I suggest you read man init.

Mateo

7 mins ago, by Seth

scripts can be services. Services aren't always scripts.

terdon

23:18

ls won't be your service, you will have a service which launches ls. The details will depend on how you set it up.

Mateo

7 mins ago, by terdon

The difference is in the way they are run more than anything else. You run scripts, the system runs services.

Nathan Osman

Unless we're talking Windows here...

...in which case "service" means something completely different.

Zacharee1

ugh

Mateo

and that is that.

edward torvalds

@terdon so simple scripts like below cannot be made a service?

#!/bin/bash
ls

GeoMint

23:18

i am going to sleep. have a good night :) \o

terdon

@NathanOsman Yes, in the Windows world they come in packs, right?

edward torvalds

@terdon btw I am going to read man init

Nathan Osman

@terdon No, they are executables run by the service manager.

terdon

@edwardtorvalds No. They can be launched via a service.

Seth

@GeoMint night!

terdon

23:19

Night @GeoMint

GeoMint

:)

kos

Oh man

@GeoMint o/

edward torvalds

@terdon can loops be used to make a service?

#!/bin/bash
while []
do
##some stuff to do
done

Nathan Osman

terdon

@edwardtorvalds It's only a service if it is launched by the service manager. If you have that script launched as a service, then it is a service.

edward torvalds

23:21

@terdon dont worry I am enabling it by systemd, but why just ls be a script :(

terdon

The same exact script launched manually by you is not a service.

@edwardtorvalds I don't understand.

edward torvalds

:'(

@terdon let me put it in another way, what makes a script to run all the time? a loop or something else?

Nathan Osman

The script runs until it completes.

edward torvalds

@NathanOsman exactly

Nathan Osman

A "service" or "daemon" is one that doesn't complete. It uses an event loop to do something.

terdon

23:24

^^

edward torvalds

@NathanOsman that is what makes me wonder, what keeps a service run in background always

Nathan Osman

For example, an HTTP daemon waits for new connections and processes them.

terdon

Edward has a thing against loops.

edward torvalds

@terdon not like that

Seth

The Windows Win32 API is one giant loop.

terdon

23:25

I don't know of any system to get a program to run endlessly that doesn't involve a loop.

kos

@terdon I think he wants a formal definition of service and script. And @edwardtorvalds I think the closest you can get to a formal definition is: a service is whatever thing is started by systemd and runs constantly (which might be a script); a script is not necessarily a service.

edward torvalds

@terdon I wonder what keeps a service run all the time, if script runs until it completes.

Nathan Osman

while(event = getNextEvent()) {
    processEvent(event);
}

^--- like that

edward torvalds

@kos I wonder what keeps a service run all the time, if script runs until it completes.

terdon

@edwardtorvalds There's another program whose job is to run the service. That program has a loop.

Mateo

23:26

here is my own very special demonstration of a fifo:

edward torvalds

@terdon you mean there is a program that runs services by putting them in a loop?

Mateo

Nathan Osman

Nice.

edward torvalds

@NathanOsman the last example you gave is of deamon?

Nathan Osman

That's a hypothetical example of how a daemon might work in its most basic sense.

terdon

23:28

@edwardtorvalds In some cases, yes. Look at what @NathanOsman showed. the processEvent(event) would be launching a script.

edward torvalds

@NathanOsman I can make any script a service right?

Mateo

could be useful if you want to output the error messages and monitor in realtime

Nathan Osman

Wait - are we talking about short-running scripts invoked at regular intervals (like cron) or a daemon that runs in the background?

terdon

@Mateo cat dog | toilet > sink

Seth

@NathanOsman daemons I think.

Nathan Osman

23:29

@edwardtorvalds "service" is generally considered a synonym for "daemon".

systemd refers to "daemons" as "services".

edward torvalds

@NathanOsman but, can I turn any script into a service?

Nathan Osman

It depends what the script does.

edward torvalds

@NathanOsman suppose that service script does one thing and dies, what will happen then?

Nathan Osman

The concept of making a script into a service doesn't really apply. Either it behaves like a service (and therefore is one) or it doesn't (perhaps computing a value and immediately exiting).

@edwardtorvalds Nothing will happen. It's dead :P

Seth

@NathanOsman this.

13 mins ago, by Mateo

7 mins ago, by Seth

scripts can be services. Services aren't always scripts.

edward torvalds

23:31

@NathanOsman so you suggest the only way to keep a service alive is a loop ?

Fabby

@ParanoidPanda yes, or I wouldn't have upvoted! :P

Nathan Osman

@edwardtorvalds Either a spinloop (very bad idea) or an event loop.

edward torvalds

spinloop?

@Seth I get "scripts can be services" and but not "Services aren't always scripts"

Nathan Osman

while(true) {
    if(somethingToDo()) {
        doStuff();
    }
}

^--- spinloop (and don't ever do that)

Serg

@Mateo thank you for teaching me ( indirectly ) new stuff today . . .mkfifo O_O

edward torvalds

23:33

@NathanOsman because it might eat a lop of cpu right?

Fabby

@A.B. Thank you! :-)

Nathan Osman

@edwardtorvalds It will eat your CPU :)

edward torvalds

@terdon you know why I hate loops: Nathan Osman @edwardtorvalds It will eat your CPU :)

terdon

@edwardtorvalds Well, if you do it that way, sure!

edward torvalds

loops, loops I hate thy guts :)

Mateo

23:34

@Serg won't be able to forget that one now ;p

Fabby

@KGIII "Yearling" silver badge!!!

terdon

This one won't though:

while(true){
if(somethingToDo()) {
doStuff();
}
else{
sleep 1
}
}

edward torvalds

@terdon thats why loops are last choice for me, until then i keep digging

Nathan Osman

Event loops are okay.

edward torvalds

@NathanOsman noted :)

terdon

23:35

@edwardtorvalds You misunderstand. There is nothing wrong with loops. What Nathan showed is just a bad loop.

Seth

@edwardtorvalds Apache isn't written in bash :)

Nathan Osman

And I clearly pointed out that it was a bad loop.

terdon

@NathanOsman Anything wrong with something like this? while :; do something; wait 1; done?

edward torvalds

@Seth in C ?

Nathan Osman

@terdon Well, it is far less taxing on the CPU since it yields control for a second each time through the loop.

terdon

23:36

@edwardtorvalds to put it another way, pick any 10 random programs, you have a 99% chance that all of them will have at least one loop.

Nathan Osman

But an event loop relies on the operating system to "wake" it when an event comes in for processing.

Fabby

@A.B. Yeah, well, while you lot were partying for my Yearling badge I was actually helping out a friend with ALS (Lou Gherig's disease to you Americans) with cleaning up a parts list... :P CC @KGIII @ByteCommander

Nathan Osman

The OS will provide a syscall like "waitForEvent()" that will "hang" until an event comes in.

Zacharee1

@Fabby ALS is the name here too

terdon

@NathanOsman Which is great if you can use it, if there is an event that can be handled that way, but that's not always the case.

Zacharee1

23:37

Everyone's too lazy for the full name

Nathan Osman

@terdon True. And then you rely on a timer or a loop similar to yours.

edward torvalds

@terdon I want to run a service using event loop,and you know that I want to use NM events

Fabby

@Zacharee1 Ah? When did that change???

KGIII

Well then happy AU Birthday @Fabby. :D (Still sort of AFK. Got hugely busy today.)

Zacharee1

@Fabby idk, but I've just never heard people actually say Lou Gherig's Disease

edward torvalds

23:39

@Fabby if ( Fabby its your birthday today? == true )
{ happy birthday :) }

Zacharee1

@KGIII it's 6:40PM

terdon

@edwardtorvalds Yes, that should be fine. However, note that NM itself will almost certainly be running a loop. You can't really program without loops. They are essential for most thigns.

Fabby

@KGIII Double thanks then! No need to reply from your phone! 2morrow is another day!

@edwardtorvalds Yeah: One year on Ask Ubuntu-birthday!

terdon

Happy birthday Fabby!

Zacharee1

@edwardtorvalds {print("Happy Birthday")}?

Fabby

23:39

Yearling silver badge!

So only to people here it matters...

>:-)

Mateo

oh, I have one that is even better

Zacharee1

Wow

Mateo

fifo's with looping now

edward torvalds

I am Member for 1 year, 4 months

Zacharee1

The USB port on my Teensy just fell off... -_-

My school Teensy, might I add

oops

terdon

23:42

@Mateo fifofifofifofifofifofifofifofifo?

edward torvalds

@terdon I dont know, you should look this:

file /usr/sbin/NetworkManager
/usr/sbin/NetworkManager: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib64/ld-linux-x86-64.so.2, for GNU/Linux 2.6.32, BuildID[sha1]=de48f56393766e83c578b41f72de201e2a272e38, stripped

Seth

YouTube - Mactini -The Peter Serafinowicz Show Christmas Special - BBC Two-CosmoPod.mp4

►

2

Fabby

@terdon :D

Nathan Osman

Wut. The source tarball for GNU Hello is over 700 KB.

Fabby

@edwardtorvalds Is your collection script working now???

terdon

23:43

@edwardtorvalds Yes, I guarantee you there will be some loops in its code.

edward torvalds

@Fabby am on it, but the concept of script is disturbing me

@terdon ok maybe

@NathanOsman do you know that NetworkManager can trigger events?

Fabby

@edwardtorvalds Why?

edward torvalds

@Fabby thats why I am eating the brains of people here :)

Nathan Osman

I haven't worked with NetworkManager, I'm afraid.

Zacharee1

@Seth XD

Fabby

23:44

Because your script is not event-driven??? :D

edward torvalds

@Fabby I am confused between a script and service

Fabby

@Seth watching

Zacharee1

@Seth thanks for helping me get over the grief of losing my Teensy :p

Mateo

Fabby

@edwardtorvalds A script is interpreted code...

edward torvalds

23:45

@Fabby my doubt:

People say service runs in background and does not occupy a terminal. I can make a script run using & or something and thus it will run in background.
People say service waits in background waiting to be executed when needed. Why can't I keep a script on hard drive and keep it waiting (which means do nothing to it) and run when needed?
People say service runs all the time in background. I can use while loop in my script and run it all the time.
People say service starts on boot and runs on its own. What stops me from keeping my script in start-up list.

Fabby

@edwardtorvalds a Service SHOULD be compiled code...

edward torvalds

@Fabby always?

Mateo

it just keeps printing it over and over ;)

terdon

Here you go, this is from NM's source:

		while (priv->queued_calls) {
			data = priv->queued_calls->data;
			priv->queued_calls = g_slist_remove (priv->queued_calls, data);

			_call_check_authorization_complete_with_error (data, "error creating DBUS proxy");
		}

A loop!

Seth

@Zacharee1 :p

edward torvalds

23:46

@terdon maybe a event loop

Zacharee1

Good thing Teensies are cheap

Seth

@Mateo what did you use to make that gif?

Zacharee1

tehbestgifz.com @Seth

No idea what's at that address. Visit at your own risk :p

terdon

@edwardtorvalds Not that one, as far as I can tell, no. It looks like it will run as long as priv->queued_calls is defined.

Mateo

@Seth lol, only the best silentcast, but then quick shrunk it in gimp

Journeyman Geek

23:47

lol

I inspired that!

Seth

@Zacharee1 it's nothing ;p

@Mateo yay

Mateo

from your ppa @Seth

Seth

speaking of that, you reminded me an update is waiting on me >.>

terdon

And here you go, an infinite loop from NetworkManager:

	while (TRUE) {
		switch (*value) {
		case '\0':
			return;
		case '\\':
		case '+':
		case '#':
		case ':':
			g_string_append_c (str, '+');
		default:
			g_string_append_c (str, *value);
		}
		value++;
	}

Zacharee1

Hmm. Should I reboot to Ubuntu?

Seth

23:48

I'm procrastinating because I hate quilt.

Zacharee1

I think I will

Goodbye for now!

Journeyman Geek

heh

I'm toying with moving back to ubuntu

Nathan Osman

@terdon That's not the same as a spinloop :P

Seth

@JourneymanGeek yes you did!

Journeyman Geek

Well sorta

terdon

23:49

@NathanOsman 'S still an infinite loop :)

Seth

@JourneymanGeek Just Do It™

Nathan Osman

@terdon In fact, that loop could be written better this way:

Journeyman Geek

SMB is being flaky as hell on fedora and since I'm connecting remotely anyway, I'm pondering running fedora on the back end, and sticking the Linux LiveCD Downloads (tm) to a VM

Nathan Osman

while (*(++value)) {
    switch (*value) {
    case '\\':
    case '+':
    case '#':
    case ':':
        g_string_append_c (str, '+');
    default:
        g_string_append_c (str, *value);
    }
}

terdon

@NathanOsman How does that one exit? The original seems to exit if \0 is given.

Nathan Osman

23:50

@terdon The same way.

The loop condition evaluates if *value is equal to \0.

terdon

Isn't *value a pointer?

Nathan Osman

It's a dereferenced pointer.

It returns the value of the pointer.

terdon

Ah, OK.

My C-fu is pitifu.

Nathan Osman

Lol.

terdon

:)

Nathan Osman

23:52

Actually wait.

Seth

@NathanOsman When you do your packaging do you use bzr dh-make at all?

Nathan Osman

I just found two problems with my example.

Mateo

hm, can you view your own +1's on g+

Nathan Osman

But my original point still stands.

@Mateo I think so but I forget the URL.

@Seth I don't invoke it directly, no.

kos

@NathanOsman *(++value) moves the pointer instead of increasing? :D

Nathan Osman

23:53

At least, I don't ever remember doing it.

Zacharee1

urgh

Stupid Windows Update

Nathan Osman

@kos Oh that part works - but it skips the first character.

I should make it into a for() loop.

terdon

Loooooooop! Nooooooo!

kos

@NathanOsman Unless I'm dead wrong ++value increases the memory location pointed by value by sizeof(type), where type is value's type, and dereferencing aftwerards will evaluate to the value at the new location (if not just segfaulting)

Seth

@NathanOsman mind going over your workflow? I'm trying to find an easy way to pull from upstream without starting over.

Nathan Osman

23:57

@kos That's correct.

@Seth The workflow for what? Putting together debian/rules?

Mateo

Apple Engineer Talks about the New 2015 Macbook

►

3

there it is ;)

Seth

@NathanOsman hmm, nvm. I guess you're always packaging your stuff so it's not really the same.

Nathan Osman

Oh I've packaged other people's stuff on occasion too :P

Just not very often.

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