davidejones

import math


def binary_search(haystack, needle, start=None, end=None):
    start = 0 if not start else start
    end = len(haystack) if not end else end
    midpoint = math.floor((end - start)/2) + start
    # do we match the midpoint or have only one element then we are done
    if needle == haystack[midpoint] or len(haystack[start:end]) == 1:
        return midpoint

davidejones

def selection_sort(u, s=[]):
    unsorted = list(u)
    sorted = [] if not s else s
    minimum = None
    index = -1
    # loop over every number
    for i, item in enumerate(unsorted):
        # if the number is less than the minimum or we have no minimum yet set it
        if not minimum or item < minimum:
            minimum = item

davidejones

// if the aws elb is passing host as ip force redirect to domain
// this is for pci fixes
if ($host ~ "\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}") {
  rewrite ^/(.*) $scheme://www.somewebsite.com/$1 permanent;
}

davidejones

# how-to-clean-log-file (http://unix.stackexchange.com/questions/92384/how-to-clean-log-file)
> logfile
cat /dev/null > logfile
dd if=/dev/null of=logfile
truncate logfile --size 0

# how to get a file octal permissions
stat -c "%a"

# check a makefile for tabs and line endings

davidejones

CFLAGS  = -std=gnu99 -Wall -Wextra -Os -nostdlib -m32 -march=i386 \
  -Wno-unused-function \
  -ffreestanding -fomit-frame-pointer -fwrapv -fno-strict-aliasing \
  -fno-leading-underscore \
  -Wl,--nmagic,-static,-Tmingw.com.ld
all:
	gcc $(CFLAGS) -o hello.o hello.c
	objcopy -O binary hello.o hello.com

davidejones

import math
from functools import reduce


def bit_count(x):
    """ The minimum bits needed to represent a number """
    # return math.ceil(math.log(x + 1) / math.log(2))
    return math.ceil(math.log2(x))

davidejones

import os
import requests
import tarfile


def download_github_repo_tar(token, org, repo, branch, to_path):
    """
    Downloads a stream tar.gz file from github of a certain organisation/branch/repo
    and extracts csv files to tmp directory for parsing

davidejones

#!/usr/bin/env bash

# grep
#	-i	case insensitive
#	-l	output file names only
#
#	Any line that begins with zero or more spaces
#	followed by word "featured"
#	followed by zero or more spaces
#	followed by ":"

davidejones

#!/usr/bin/env bash

# color pick the homepage
image_filename="public/$(sed -n 's/.*data-color="\([^"]*\).*/\1/p' public/index.html)"
echo "Picking color from : ${image_filename}"
if type "colorific" > /dev/null && [ -f $image_filename ]; then
    picked_color=$(echo $image_filename | colorific | cut -d# -f7)
    echo "Picked color : ${picked_color}"
    sed -i "/^[[:space:]]*.home-blog-bg/,/}$/ s/background-color:.*/background-color: #$picked_color;}/g" public/index.html
else

davidejones

#!/usr/bin/env bash

# image magick extract image from gif
convert Collaboration.gif[4] collaboration-static.gif

# ffmpeg extract image from timestamp
ffmpeg -ss 00:00:04 -i Collaboration.mp4 -vframes 1 collaboration.png
ffmpeg -ss 00:00:12 -i Alerts.mp4 -vframes 1 alerts.png
ffmpeg -ss 00:00:09 -i API.mp4 -vframes 1 api.png
ffmpeg -ss 00:00:07 -i APM.mp4 -vframes 1 apm.png