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@ShirtlessKirk
ShirtlessKirk / luhn.js
Last active July 9, 2025 20:11
Luhn validation algorithm
/**
* Luhn algorithm in JavaScript: validate credit card number supplied as string of numbers
* @author ShirtlessKirk. Copyright (c) 2012.
* @license WTFPL (http://www.wtfpl.net/txt/copying)
*/
var luhnChk = (function (arr) {
return function (ccNum) {
var
len = ccNum.length,
bit = 1,
@andreyvit
andreyvit / tmux.md
Created June 13, 2012 03:41
tmux cheatsheet

tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)

Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:

remap prefix to Control + a

@stantonk
stantonk / scalaforpy
Last active August 28, 2021 10:13
Scala for Python Programmers, examples
/*
Notes:
Despite Scala's appearances, it is, in fact, a Statically Typed language.
It has just eliminated a great deal of the "type vomit" people are used
to seeing in Statically Typed languages (e.g. C, C++, Java). It often
can infer the type on its own. It also combines functional and
object-oriented programming paradigms in a fashion that feels similar
to Python.
*/
@dominicsayers
dominicsayers / elasticsearch.md
Last active August 12, 2024 08:14
Configuring ElasticSearch to use less memory

What I actually did

/etc/security/limits.conf

elasticsearch hard memlock 100000

/etc/default/elasticsearch

@jtferns
jtferns / cmder_split.md
Last active March 26, 2023 14:39
Create simple 4-way split of Cmder for windows cmd prompting...

Setup

  1. Launch Cmder
  • step1
  1. Right-click on the console tab
  2. Select New Console... to launch the ConEmu console create dialog
  • step2
  1. In the New Console Split section, select the To right radio option click the Start button
  • step3
  1. Congrats, you now have a half-n-half or 50-50 horizontal split!
@Jamesits
Jamesits / caddy.sh
Last active December 11, 2024 17:47
Install Caddy Server on Ubuntu with Systemd.
# Should work on all Debian based distros with systemd; tested on Ubuntu 16.04+.
# This will by default install all plugins; you can customize this behavior on line 6. Selecting too many plugins can cause issues when downloading.
# Run as root (or sudo before every line) please. Note this is not designed to be run automatically; I recommend executing this line by line.
apt install curl
curl https://getcaddy.com | bash -s personal dns,docker,dyndns,hook.service,http.authz,http.awses,http.awslambda,http.cache,http.cgi,http.cors,http.datadog,http.expires,http.filemanager,http.filter,http.forwardproxy,http.geoip,http.git,http.gopkg,http.grpc,http.hugo,http.ipfilter,http.jekyll,http.jwt,http.locale,http.login,http.mailout,http.minify,http.nobots,http.prometheus,http.proxyprotocol,http.ratelimit,http.realip,http.reauth,http.restic,http.upload,http.webdav,net,tls.dns.auroradns,tls.dns.azure,tls.dns.cloudflare,tls.dns.cloudxns,tls.dns.digitalocean,tls.dns.dnsimple,tls.dns.dnsmadeeasy,tls.dns.dnspod,tls.dns.dyn,tls.
@ajdavis
ajdavis / watcher.py
Created January 4, 2017 13:14
Script based on the Python "watchdog" module to run tasks when files change.
#!/usr/bin/env python
import os
import re
import threading
import time
import subprocess
from os.path import splitext, expanduser, normpath
import click
@developius
developius / Dockerfile
Last active May 9, 2018 18:18 — forked from alexellis/Dockerfile
Sentiment Analysis function for FaaS
FROM python:2.7-alpine
RUN pip install textblob
RUN python -m textblob.download_corpora
ADD https://github.com/alexellis/faas/releases/download/0.5.1-alpha/fwatchdog /usr/bin
RUN chmod +x /usr/bin/fwatchdog
WORKDIR /root/
COPY handler.py .
@aunyks
aunyks / snakecoin-server-full-code.py
Last active May 19, 2025 01:22
The code in this gist isn't as succinct as I'd like it to be. Please bare with me and ask plenty of questions that you may have about it.
from flask import Flask
from flask import request
import json
import requests
import hashlib as hasher
import datetime as date
node = Flask(__name__)
# Define what a Snakecoin block is
class Block:
@ruanbekker
ruanbekker / cheatsheet-elasticsearch.md
Last active September 17, 2025 09:41
Elasticsearch Cheatsheet : Example API usage of using Elasticsearch with curl