untrothy's comments

untrothy | 10 years ago | on: Guess my word

Or you could just look at the json file where the anwsers are stored :)

untrothy | 11 years ago | on: 9 truths that computer programmers know that most people don't

Off the top of my head and according to what he meant by single number:

- As a single entity: I usually think in decimal so you could write a "single" decimal number (e.g. 234) and convert it to binary and the 1 and 0 character mean Yes / No.

- As a single character: You could just write a random character (e.g. ॐ ), specifying that is has to be interpreted as a number in Base N+1 and ॐ + 1 = 10. This is useless though.

untrothy | 11 years ago | on: Patch to Log SSH Passwords – One Year Results

I changed my port from 22 to a higher one and the user attempts are completely gone.

Only nuisance is that the higher ports may be blocked, for example my uni blocks my new ssh port so I can't connect to the vps when I'm on campus.

untrothy | 11 years ago | on: Making Connections to Facebook More Secure

I'm guessing they used something like scallion [0] or Shallot [1].

Bench marking Shallot on an Intel [email protected]:

  time ./shallot ^a      -> 0.09 sec user
  time ./shallot ^aa     -> 0.12 sec user
  time ./shallot ^aaa    -> 0.12 sec user
  time ./shallot ^aaaa   -> 0.47 sec user
  time ./shallot ^aaaaa  -> 5.92 sec user
  time ./shallot ^aaaaaa -> 118 sec user
Unfortunately OpenCL doesn't work with the nouveau drivers so I can't test scallion.

Who knows how much they spent trying to brute force that onion address.

EDIT: Ok looks like they went the backronym route

[0] https://github.com/lachesis/scallion [1] https://github.com/katmagic/Shallot

untrothy | 11 years ago | on: Gog.com Now Supports Linux

Nowadays native games usually don't have issues and for the other ones wine often works, even with a somewhat unusual tiling window manager (Xmonad).

Performance is still not as good as on Windows though. For example I can't play Dota 2 because of low fps on linux but on windows it is playable.

untrothy | 11 years ago | on: Ask HN: Why would you disable JavaScript?

My primary browser has JS, cookies and plugins completely disabled, and when I open a link and get nothing but a white page it is pretty frustrating. I understand that with these settings i'm not going to see any fancy animations, menus, ads, games, ecc but I at least expect to see some text.

I don't expect nothing else, if I can get some text I'm happy.

untrothy | 11 years ago | on: Things You Should Know About Tor

My distro's tor setup (arch in this case) should default to not being an exit node, relevant default lines in the torrc:

  ExitPolicy accept *:6660-6667,reject *:* # allow irc ports but no more
  ExitPolicy accept *:119 # accept nntp as well as default exit policy
  ExitPolicy reject *:* # no exits allowed
Installing via `pacman -S tor` and enabling via `systemctl enable tor.service` doesn't start an exit node / relay but a simple client.

Are you using linux, windows or osx?

untrothy | 12 years ago | on: Ubuntu 14.04 LTS: Why you should not use it, at all

I hear this a lot every time arch is mentioned.

So I decided to actually write down every time my arch install stopped working. I only managed to continue doing so for a couple of months and it's only representative of my pc so take it with the usual grain of salt. I usually run pacman -Syu every day.

That being said in 2 months I had these problems:

05/10/2013 Slim changed the xsession name, I had to edit manually slim.conf

14/10/2013 linux-ck kernel upgrade broke xorg so I had to downgrade until it was fixed

29/10/2013 xmobar template had to be slightly modified

02/11/2013 Calibre didn't start, imagemagik was broken, had to downgrade until it was fixed

So 4 problems in 2 months. I'm sure I didn't write down everything since it was a little tedious.

Would i recommend you use it on a production server? Is the time you spend on paying attention worth it? I haven't the foggiest.

untrothy | 12 years ago | on: Why You Should Try a Tiling Window Manager

While i agree that xmonad is a bit of a pain to configure the first time around (especially if you're not used to writing code in haskell) I find that you can use the mouse pretty extensively with xmonad.

For example with this in my xmonad.hs:

  ((0,9), (\_ -> moveTo Next NonEmptyWS))
  ((0,8), (\_ -> moveTo Prev NonEmptyWS))
I can move between work spaces with only my mouse (In this case with the extra 2 buttons on the left).

untrothy | 12 years ago | on: Optical strontium clocks could redefine the second

I suspect galaxy distances are not very precise to begin with.

For example, the distance to the nearest galaxy: "The team refined the uncertainty in the distance to the LMC down to 2.2 percent." [1]

This kind of precision could be used for example to measure the radius of elementary particles (wild guess, I'm not even sure that makes sense given what we know about the quantum world)

[1] http://obs.carnegiescience.edu/content/distance-nearest-gala...

untrothy | 12 years ago | on: Optical strontium clocks could redefine the second

I'm not an expert so take what I say with a grain of salt, but for example 1 meter is defined to be:

"Length of the path travelled by light in a vacuum in 1⁄299,792,458 of a second (17th CGPM)" [1]

So if you manage to measure the second with better accuracy you also manage to measure distances with less uncertainty.

For our everyday lives it will probably make no difference if the uncertainty of the meter changes from 10^-10 to 10^-11, but physicists could probably use the improvement to do something interesting.

[1] http://en.wikipedia.org/wiki/Metre

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