The Sand Trap - 2022-06-16

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12:26 AM

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Autofill is very helpful

4 hours later…

Nobody Needs Names

4:38 AM

hahaha

7 hours later…

12:04 PM

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:thonk:

12:34 PM

lol

1 hour later…

2:00 PM

@WezloOvOo I'm just pitnicking the picknitters :P

@WezloOvOo I went to the park and saw a load of grannies having lunch and making little woolen toys. They were picnicking knitknitters

6

pitnicking is when you fall into a pit and it makes you get scratched or stub your toe

@pxeger i hope you didnt steal any. You wouldn't nick picnicking knitknitters' wool would you?

Rhabarberbarbara

← 4 messages moved from The Nineteenth Byte

we were kinda disrupting the parallel conversation, so I moved us

respectable

i cant stop saying picnicking knitknitters in my head now lol

2:07 PM

chat.stackexchange.com/transcript/message/61378413#61378413 is just as irrelevant btw

oops, missed it

← 1 message moved from The Nineteenth Byte

thx

2 hours later…

4:36 PM

@pxeger Rhabarberbarbara is great, and one thing I love about it is that it works almost as well when translated into English.

4:58 PM

Read this question, then the top answer, then the comment thread on the top answer... o_0

5:11 PM

????

6:05 PM

@DLosc This?

6:19 PM

@user @pxeger Sorry, should've said accepted answer

6:35 PM

@Dorian Yeah, if he ends up stealing your heart please report back, so we can add this to our list of bike scams to watch out for... — Michael 3 hours ago

6:50 PM

"...but in this case why did he engage me at all?" Here's an interesting idea: to establish an alibi for something else. In Higashino Keigo's novel The Devotion of Suspect X, the murderer wanted to make it look as if the crime was committed one night later than it actually was. As part of this, he steals an old beat-up bike that was secured with a chain, despite their being several newer unsecured bikes at the railway station, as he need to be sure that the owner would report it to the police. (He used the bike to move the body, then dumps the body and bike, to establish the fake date). — Simon Crase yesterday

Announcement on behalf of VyxalBot:

in Vyxal, 2 mins ago, by Vyxal Bot

@user I am doing an announcement. Shadow the Hedgehog is a b*tch-a$$ mfer. He pissed on my fricking wife.

1 hour later…

8:07 PM

@DLosc yeah I got that, the "????" was in response to reading those comments lol

2 hours later…

9:57 PM

@PyGamer0 Y'all making me do so much work lol.

10:11 PM

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tmw you log into your sock after nearly a few months

@forest Hey there

Hey.

I have an account on Crypto

I am 1 day old

ok

:^)

Nuke time?

10:17 PM

/mode #off-topic-tnb +b ruse@*.*

nuke'd

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@forest You use...Discord bots to nuke people?

> Discord

Bruh that's IRC.

Ah ok

Similar enough syntax

That's horrifying. And Discord sucks.

Whoa, what's so bad about it?

10:21 PM

The culture. The closed nature of the overall architecture.

Wait, don't tell me, are you concerned about privacy?

No that's not why.

Culture? Every server has its own culture

I like IRC and IRC isn't private, generally.

@ruse Wait, are you actually underage too?

No lol

I've been overage for quite a long time now

10:23 PM

heh

I joined SE when I was around 15

That would have been before the age limit was in place.

When did that happen?

Not sure. Shortly after GDPR?

I'm sure the answer is on MSE.

Well, anyway, I'm not in the EU so even if the age limit was in place then, it'd be legal

Seems to have been in place early as 2015, apparently

10:26 PM

Mods are required to escalate no matter what for anyone under 16.

It's supposed to be up to the CMs to determine if they're actually in the EU, for whatever reason.

Ah

TIL there was an age limit of 90

Yeah we don't want old people on this site, scaring people away with their... smelly toenails... /s

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Watching a video about operating systems rn and for some reason, there's a big screen in the background with scrolling green numbers

It's not even a movie, it's just a course

A hex dump or something?

Possibly, I can't make out the individual numbers (if they're numbers)

But it doesn't seem to have anything to do with the video itself

10:36 PM

It just looks like the left column are offsets.

0306896 03ea 7a29 4001 9999 d3ad 3bff 044b 27aa
0306912 1729 b657 25fe a640 1452 c5f4 efcf 25b4
0306928 36a6 a72c 224e 6fe5 5dd3 364d dfce 7c4f
0306944 5478 dbec 2923 b821 6f3d 098f 0d40 88e2
0306960 b906 d19f c370 292e b725 077b 9ded 7f93
0306976 d5c4 82d9 6d0c 6393 1d09 f910 fdd1 ee91
0306992 999f 909d 8f74 cf15 167b 1576 959d 3ec8
0307008 1532 924f d5fd 96aa afc1 2be6 b50b 570c
0307024 b3e2 64dd 86e5 2171 bef5 a207 fa04 7287

Something like that (was od -Ad -tx2 /dev/urandom).

But I can only see the thumbnail.

@user just to give that movie-hacker vibe yknow? ya gotta have screens filled with console text scrolling faster than someone can read

Going into fullscreen mode doesn't make it any clearer

@des54321 They're actually not scrolling very fast at all, just very blurry

Oh that is blurry.

@user looks theyre far enough back that theyre out of focus, so making the image bigger isnt going to help

Yeah

10:40 PM

Oh wait

I know what it is. It's xxd.

00000000: a33e 7307 151b 1d8e 6749 f47a 6f14 9cb1  .>s.....gI.zo...
00000010: 81bb e1a6 b98d f010 b6df c05d c14a 3494  ...........].J4.
00000020: b906 1a78 c372 e288 a1e0 3b2a f8a5 1163  ...x.r....;*...c
00000030: 44b0 1b84 2922 d2cf 115a b2c0 6d89 85e3  D...)"...Z..m...
00000040: f213 a4bd a43f 6494 184d c353 9035 f5ce  .....?d..M.S.5..
00000050: 3466 533b 87bb 0e69 e0fa 1ce7 43f1 4fae  4fS;...i....C.O.
00000060: 5584 0187 dc75 6b41 5ad4 890b 0716 4b6b  U....ukAZ.....Kk

You just can't see the decoded text on the right because he's in the way.

Ah

You can tell because of the spacing between the offsets and hex, and the fact that there's a colon (which you can barely see in the image). And if you look to the far right, you can see the start of the decoded text.

Is there a Linux command to stagger output from another command? Because each next line was only showing up every half second or so

Several commands can do that.

Could be pv, could be dd, could be tail -f. Could be that it's reading from some special device that's only spitting out data slowly.

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Now that you mention it, the text is visible occasionally

Huh, didn't know pv existed

10:45 PM

It means "pipe verbose". It's great.

Not ideal if something is very high-speed because you'll be doing some context switches so you can't splice().

Oh wait, no it can use splice(), nvm.

I mean, still will require some context switches but it wouldn't have to keep messing with page tables.

You can also use dd status=progress as well, although that I don't think will use splice() at all.

And unlike pv, you have to specify a block size with dd manually or it'll use 512, which is sub-optimal.

I think GNU did some empirical testing and found that 256k was the best blocksize for the average device.

That's a pretty big difference from the default

Would it be a breaking change to make dd use 256kb by default?

It uses 512 because that's common for block devices.

Also I was wrong. Seems it's 128k:

$ strace -e trace=read,write -s10 -x pv /dev/urandom > /dev/null
[...]
write(1, "\x6b\x41\xaf\xab\xa6\xe5\x4b\x60\x3a\x1f"..., 131072) = 131072
read(3, "\x92\xe8\x8a\xe9\x95\x3c\xbf\xc1\x36\x16"..., 131072) = 131072
write(1, "\x92\xe8\x8a\xe9\x95\x3c\xbf\xc1\x36\x16"..., 131072) = 131072
read(3, "\xea\x57\xd4\x9f\xb9\xd7\xe0\xdc\xa0\xeb"..., 131072) = 131072

@user But you could manually tell it to use a larger block size. That's what most people do.

E.g. dd if=foo of=bar bs=256k or so.

... what

But if you're just copying, then you should use cp instead since it supports holes for the filesystems that support it.

Whereas dd is ideal for precision file carving and the like.

I'm gonna need some time to digest that :P

@emanresuA I don't get how neither the adults serving it nor the children drinking it didn't realize it was floor sealant

11:03 PM

@user tl;dr "If you wanna copy data fast, just use cp."

Ah ok

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Jun '2216

The Sand Trap

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