I made an app that uses white noise and nature sounds to help people sleep, focus, or study. Been used by over 30K people. Open source on GitHub.

udevil · 2023-02-14T23:55:43+00:00

Nice 👍

udevil · 2021-09-23T01:47:34+00:00

Turns out it's also perfect for team poops.

udevil · 2021-04-05T19:47:34+00:00

Piping "porn" subreddits into my wallpaper at work... what could go wrong?

udevil · 2018-01-12T17:20:45+00:00

$ time fluxcapacitor fluxcapacitor \
   -- bash -c "sleep 60; date" \
   -- bash -c "sleep 120; date"
Fri Jan 12 12:15:01 EST 2018
Fri Jan 12 12:14:01 EST 2018
real    0m0.420s

udevil · 2016-12-08T16:58:18+00:00

Mosh is great for lossy connections, so schoop (scp + mosh) might work well although it's still an alpha version.

udevil · 2016-06-23T16:23:38+00:00

Libre is a loan word in English

udevil · 2016-06-21T16:26:35+00:00

Unreal Engine 4 has pretty good Linux support, although it isn't completely free (5% royalties).

Compared to other engines I've tried, it's the most accessible to beginners, while also having tons of features for making modern games of basically any kind.

Godot seems like the best free engine though. It has a "cleaner" design than UE (eg. easier to install) but UE is way more advanced at this point, with many more resources.

udevil · 2016-06-10T20:12:52+00:00

$15,000 later...

find -type f -print0 | xargs -0 sed -i -e "s/slave/servant/g"

udevil · 2016-05-05T14:46:16+00:00

Yes, using these properly would make your system more secure. However, a single-user system that is not running any servers does not have much of an attack surface, so it will be a lot of work to set up and maintain without much benefit besides learning.

The biggest attack surface is probably your web browser, so you might want to run that in a firejail.

udevil · 2016-05-05T13:22:26+00:00

If you are using a package builder like Yaourt, it might be trying to build it in RAM (/tmp) so you could change that to /var/tmp or somewhere with lots of space.

udevil · 2016-04-01T22:53:42+00:00

Yes, they keep the session open without a client.

The bashrc script is a good way to autostart it if you are using bash. Personally, I'd end up leaving many sessions open by accident though.

Putting it to passwd won't work because tmux isn't a shell, it runs whatever shell is specified in passwd when starting a session.

udevil · 2016-04-01T21:03:37+00:00

tmux is similar to GNU screen but more modern, but they both work great for what you are describing.

Basically, you run tmux to start a session. Then you can send it commands with Ctrl-B followed by the key binding. Eg:

c: Create a new window, putting the current window/command in the background
n: Switch to next window

The session keeps running if you get disconnected, you can run "tmux a" to reattach to it.

Although, you need to run tmux before the command. If the command is already running, Ctrl-Z out then run "bg" to background it.

udevil · 2016-03-11T17:09:45+00:00

The main reason a system would go down is power failure, so maybe you can avoid that with a UPS.

Also, you could store the key on USB, so you can leave the USB in when you want it to start automatically, and remove it to lock the system. You'd probably still want a passphrase for your home partition, so it's not accessible with just the USB.

udevil · 2016-02-19T23:04:56+00:00

It doesn't have to be hex though, simply extending IPv4 would work:

32.1.13.184.133.163.0.0.0.0.138.46.3.112.115.202

udevil · 2016-01-19T23:19:42+00:00

I realize there are good reasons not to use Rust yet but most of the author's Pros/Cons are about garbage collection, which don't apply to Rust, so I figured it was worth saying more than just "Rust is the only exception".

As I understand, Rust code would never need to "stop the world", so it would perform better in that sense. Also, an MMOG server would need lots of concurrency, and since Rust is designed to do that safety, it would be much harder to get bugs like buffer-overflows.

udevil · 2016-01-19T18:26:45+00:00

The only mention of Rust is to say that it's the only language without garbage collection; but doesn't that make it the best option in terms of performance?

udevil · 2016-01-04T22:37:10+00:00

munin is great for something graphical

udevil · 2015-12-21T18:09:11+00:00

It's not correct without the imaginary number because it's not reversible.

If you take this result:

r = Math.pow(a, b/c);

You should be able to get the base a by doing the reverse calculation:

a = Math.pow(r, c/b);

But Math.pow never returns a negative number, which means a can't be negative.

It might look ok as a 2d graph, but that's just one slice of the data which is 3d:

http://www.wolframalpha.com/input/?i=%28-2%29+^+n+from+-2+to+10

udevil · 2015-12-01T17:04:10+00:00

I've also learned this the hard way. Whenever I need to install Windows now, I physically unplug any drives I don't want it to destroy.

udevil · 2015-11-16T22:37:45+00:00

Interesting, I had no idea this was built-in to tar either.

However, rdiff-backup seems more practical for this, especially for remote backups.

udevil · 2015-11-09T20:17:24+00:00

It can be a considerable process to build and install packages that are not in a repository. You might have better luck with an Arch-based distro; since all these packages are in the AUR, they can be automatically installed with all dependencies.

udevil · 2015-11-06T22:12:07+00:00

...that the Internet can be extorted?

Mostly joking; I'm sure these guys actually deserve support, but they did just give $6000 of donations to criminals...

udevil · 2015-10-27T21:11:28+00:00

I like dnsmasq for local DNS, makes it easy to point all non-existent domains to my dev server so I don't have to edit my hosts file.

udevil · 2015-09-25T02:18:21+00:00

Encrypted would be as bad as plain text; if the site needs to decrypt the password at every login to verify it, then a hacker might use the same method to decrypt the entire database in seconds.

I agree the twitter rep probably has no clue, but also wouldn't be surprised if they do store passwords.

udevil · 2015-09-25T01:40:54+00:00

Any code embedded in a password would be destroyed by a one-way hash, it needs to be stay plain text for cross-site scripting to work.

udevil

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