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@subfuzion
subfuzion / curl.md
Last active May 3, 2024 09:26
curl POST examples

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

@cecilemuller
cecilemuller / 2019-https-localhost.md
Last active May 2, 2024 16:43
How to create an HTTPS certificate for localhost domains

How to create an HTTPS certificate for localhost domains

This focuses on generating the certificates for loading local virtual hosts hosted on your computer, for development only.

Do not use self-signed certificates in production ! For online certificates, use Let's Encrypt instead (tutorial).

@joepie91
joepie91 / random.md
Last active April 27, 2024 22:59
Secure random values (in Node.js)

Not all random values are created equal - for security-related code, you need a specific kind of random value.

A summary of this article, if you don't want to read the entire thing:

  • Don't use Math.random(). There are extremely few cases where Math.random() is the right answer. Don't use it, unless you've read this entire article, and determined that it's necessary for your case.
  • Don't use crypto.getRandomBytes directly. While it's a CSPRNG, it's easy to bias the result when 'transforming' it, such that the output becomes more predictable.
  • If you want to generate random tokens or API keys: Use uuid, specifically the uuid.v4() method. Avoid node-uuid - it's not the same package, and doesn't produce reliably secure random values.
  • If you want to generate random numbers in a range: Use random-number-csprng.

You should seriously consider reading the entire article, though - it's

In this tutorial we're going to build a set of parser combinators.

What is a parser combinator?

We'll answer the above question in 2 steps.

  1. What is a parser?
  2. and, what is a parser combinator?

So first question: What is parser?

@jchandra74
jchandra74 / PowerShell Customization.md
Last active March 1, 2024 01:02
PowerShell, Cmder / ConEmu, Posh-Git, Oh-My-Posh, Powerline Customization

Pimping Up Your PowerShell & Cmder with Posh-Git, Oh-My-Posh, & Powerline Fonts

Backstory (TLDR)

I work as a full-stack developer at work. We are a Windows & Azure shop, so we are using Windows as our development platform, hence this customization.

For my console needs, I am using Cmder which is based on ConEmu with PowerShell as my shell of choice.

Yes, yes, I know nowadays you can use the Linux subsystem on Windows 10 which allow you to run Ubuntu on Windows. If you are looking for customization of the Ubuntu bash shell, check out this article by Scott Hanselman.

@O-I
O-I / weighted_random_sampling.md
Last active February 21, 2024 19:02
[TIx 8] Weighted Random Sampling in Ruby

One of the many reasons I love working with Ruby is it has a rich vocabulary that allows you to accomplish your goals with a minimal amount of code. If there isn't a method that does exactly what you want, it's usually possible to build an elegant solution yourself.

Let's take the example of simulating the rolling of a die.

We can represent a die as an array of its faces.

die = [*?⚀..?⚅]
# => ["⚀", "⚁", "⚂", "⚃", "⚄", "⚅"]
@zoellner
zoellner / utf16test.js
Created May 28, 2020 20:37
write utf-16 encoded files in node.js (both utf16be and utf16le)
const fs = require('fs');
// our demo string is in 'default' utf8 with emoji character assuming you are using an editor that supports those.
// if not, you can test this gist by setting utf8string to the equivalent '->\ud83d\ude03\ud83e\uddd2\ud83c\udffc\u00fc\u010d\u0113<-'
// gist doesn't support all ZWJ sequences, so can't show this here but it works with those as well, e.g. '\ud83d\udc68\ud83c\udffc\u200d\ud83d\udcbb'
const utf8string = '->😃🧒🏼üčē<-';
// this is what you'd usually do to write to a utf-8 encoded file
fs.writeFileSync('test-utf8.txt', utf8string);
@dleske
dleske / k8s-update-secret.md
Last active January 29, 2024 17:12
k8s: Updating a Secret

Hopefully helped another k8s newbie with the following. The question was, how do you update a single key in a secret in k8s? I don't know anything about secrets but I will probably want to know this in the future, so here we go.

First, to create a dummy secret:

apiVersion: v1
kind: Secret
metadata:
  name: test-secret
data:
@DavidWells
DavidWells / aws-lambda-redirect.js
Created June 28, 2018 20:48
How to do a 301 redirect from an AWS lambda function
exports.handler = (event, context, callback) => {
const response = {
statusCode: 301,
headers: {
Location: 'https://google.com',
}
};
return callback(null, response);
}
@paul-appsinyourpants
paul-appsinyourpants / Console color in ruby
Created February 18, 2011 22:49
Add color to console logging easily in ruby
COLOR_ESCAPES = {
:none => 0,
:bright => 1,
:black => 30,
:red => 31,
:green => 32,
:yellow => 33,
:blue => 34,
:magenta => 35,
:cyan => 36,