code logs -> 2014 -> Tue, 28 Jan 2014< code.20140127.log - code.20140129.log >
--- Log opened Tue Jan 28 00:00:54 2014
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--- Log closed Tue Jan 28 08:50:26 2014
--- Log opened Tue Jan 28 08:50:35 2014
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10:35
<@Tarinaky>
Remind me, how do I inspect the contents of a package in Aptitude?
10:35
<@Tarinaky>
Show just gives me descriptive information
10:36
<@Tarinaky>
I want to know what binaries a package has.
10:36
<@Shiz>
you don't use aptitude, but dpkg
10:36
<@Shiz>
dpkg --listfiles <package>
10:36
<@Tarinaky>
Danke!
10:37
<&jerith>
Or "apt-file list <package name>" if you don't have the .deb handy.
10:37
<@Shiz>
dpkg doesn't need the deb
10:37
<&jerith>
(You might need to install apt-file first.)
10:37
<@Shiz>
I wasn't aware of apt-file though
10:37
<@Shiz>
another thing learned
10:38
<@Shiz>
(dpkg does require that the package is installed, though. either that OR the deb)
10:38
<&jerith>
Ah.
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11:19
<@Tarinaky>
Okay. So. My diss involves patching some (existing) firmware for an Arduino Microcontroller to add a feature. I have the upstream code compiling on my laptop into a .hex file.
11:19
<@Tarinaky>
What I really need to know are what're my options for testing?
11:20
<@Tarinaky>
Unfortunately the person I could really do with talking in my department is off this week because of a bereavement.
11:20
<@Tarinaky>
And I could do with some direction :/
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11:34
<@Tarinaky>
Okay. Nm. I think I found what I need on StackOverflow.
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12:24
<@simon_>
I just learned about http://en.wikipedia.org/wiki/Operational_transformation today
12:24
<@simon_>
this is amazing!
12:24
<@simon_>
I didn't know there was a field of study dedicated to real-time "version control"
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12:32
<@RichyB>
simon_, it's how collaborative editors work. :)
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12:34
<@simon_>
RichyB, yeah :)
12:34
<@RichyB>
Also might be interesting, the CRDT papers.
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12:35
<@simon_>
CRDT papers?
12:35
<@simon_>
ah, Consistency Without Concurrency Control
12:35
<@RichyB>
CRDTs are Convergent Replicated Data Types. Fancy name for "data structure which behaves like sets with the union operator".
12:35
<@RichyB>
Yesh, that one.
12:35 * simon_ is ashamed to admit that those papers were extra-curricular in his last course, and he didn't read them.
12:35
<@RichyB>
I have yet to get around to reading those.
12:36
<@RichyB>
Anyway. It's not quite the same thing as OT (I think that you get different user-visible behaviour around nearby-edits) but they sound easier to implement.
12:37
<@simon_>
ahhh.
12:37
<@simon_>
*Commutative* Replicated Data Type
12:37
<@simon_>
ok.
12:38
<@simon_>
I've never heard about the formalisation of OT before now.
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12:39
<@simon_>
I read this interview with one of the CodeCombat.com founders (I waste too much time reading start-up fan-fiction) about using OT on CodeCombat, since apparently they have a multiplayer version, too.
12:40
<@simon_>
using commutativity is great.
12:41
<@simon_>
I think that's how you parallelize reduce(), too?
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12:43
<@simon_>
http://hal.archives-ouvertes.fr/docs/00/10/85/23/PDF/OsterCSCW06.pdf -- apparently one of the collaborative text editing algorithms that the CRDT article refers to defines an algorithm called WOOT :P
12:43
<@simon_>
err
12:43
<@simon_>
that sentence mangled up.
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12:51
<@RichyB>
simon_, IIRC the paper uses "convergent" rather than "commutative"
12:51
<@RichyB>
simon_, because commutativity and associativity aren't quite enough. You also need idempotence.
12:52
<@RichyB>
You can parallelize reduce() with just associativity, but it's easier if you have commutativity, too.
12:52
<@RichyB>
(with idempotence: you can safely apply the same edit twice)
12:53
<@RichyB>
(without idempotence: you need to someow track whether you've applied this edit or not. Boo, hiss.)
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13:11
< abudhabi_>
Has the docx encryption been broken yet or is it safe enough for now?
13:15
< Syka>
"[In] Office 2010 when you encrypt Open XML Format files (.docx, .xslx, .pptx, and so on) the default values [are] â AES, 128-bit key length, SHA1, and CBC."
13:15
< Syka>
128-bit AES?
13:15
< Syka>
eh, good enough, probably
13:16
< Syka>
abudhabi_: certainly enough to keep a casual attacker out
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13:19
<@RichyB>
aes-128-cbc is, unless you do something stupid like leaving a copy of your key lying around, probably not going to be brute-forceable with all of the computers that humanity will ever build.
13:20
< Syka>
neither is many things
13:21
< Syka>
but it's vulnerable to weak passwords (dictionary attacks!)
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13:25
<@gnolam>
The question isn't usually "what is the theoretical strength of the encryption algorithm used?" but rather "is it implemented correctly?".
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13:32
<@simon_>
RichyB, oh! thanks for clarifying that.
13:34
<@RichyB>
gnolam, with a handful of notable recent breaks
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--- Log closed Wed Jan 29 00:00:10 2014
code logs -> 2014 -> Tue, 28 Jan 2014< code.20140127.log - code.20140129.log >

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