chris-kobrzak

kafkacat -L -b <BROKER_URL:PORT> -t <KAFKA_TOPIC>

chris-kobrzak

find /var/log/apt -name 'history.log*' -exec zgrep -- '<YOUR SEARCH TERM>' {} +

chris-kobrzak

const {asin, cos, sin, sqrt, PI} = Math

const EARTH_RADIUS_KM = 6371
const METERS_IN_KM = 1000

// const deg2rad = n => Math.tan(n * (Math.PI / 180))
const convertDegToRad = degries => degries * (PI / 180)

/**
 * is One Point within Another

chris-kobrzak

// Dependency injection helper
const injectLambdaDependencies = (handle, dependencyMap) => (event, context) => {
   const enhancedContext = Object.assign({}, context, dependencyMap)

   return handle(event, enhancedContext)
}

// Dependencies, possibly returned by a factory
const dependencyMap = { doSomething: () => 'foo bar' }

chris-kobrzak

#!/usr/bin/env bash

# - consumes a list of URL paths from a file called `paths.txt` (a simple
# new-line separated list),
# - concatenates them with base URLs (that can be defined with environment
# variables),
# - hits these URLs every <interval> seconds in a seqential way
# - waits a little longer every <batch> and <bigBatch> URLs to ease out
# the pressure on your server

chris-kobrzak

#!/usr/bin/env bash

for directory in */ ; do
  dirTimestamp="$(GetFileInfo -d "$directory")"

  (
    cd "$directory"
    # In this case img files have no extensions
    for fileName in `find . -type f -maxdepth 1 ! -name "*.*"`; do
      fileTimestamp="$(GetFileInfo -d "$fileName")"

chris-kobrzak

import React, { Component } from 'react'
import { withRouter } from 'react-router'

const topCoordinates = [0, 0]

const { scrollTo } = window

class ScrollToTopHandler extends Component {
  // Arrow method, requires stage 2 Babel preset
  render = () => null

chris-kobrzak

# Get the most recent commit ID
git rev-parse HEAD

# Detect if feature branch has been rebased on master
git checkout <your-feauture-branch>

git checkout master

masterHeadId=`git rev-parse HEAD`

chris-kobrzak

// Low-level, generic validation functions
// Signature: any => boolean
const hasLength = value => value.length > 0

const hasLettersAndDotsOnly = value => (
  value.match(/^[a-z\.]+$/gi) !== null
)

/*
Map input fields to "types" that we want to validate in a certain way. This

chris-kobrzak

export default function buildObjectFromClass (className) {
  return Object.getOwnPropertyNames(className.prototype)
    .filter(propertyName => propertyName != 'constructor')
    .reduce((result, propertyName) => {
      result[propertyName] = className.prototype[propertyName]
      return result
    }, {})
}