Vincent Batts vbatts

emojisum

🙏 📎 Emoji that checksum! 🎉 💩

I attempted a curated list of 256 emojis that are not entirely similar. Using http://www.webpagefx.com/tools/emoji-cheat-sheet/ to compare them. I went with 256 as that is 8bit/1byte, and the hexadecimal output that is 2 hex characters.

So 1 emoji is 2 hex positions.

new home

walkthrough: buildah on knative

The buildah utility is a versitile container build tool that does not require a daemon (everything is direct invocation). See my "deep dive" for a few hands on use-cases.

Recently knative was announced. It is a project to enable the kubernetes primitives needed to build a functions-as-a-service. There are a plumbing services needed around this use-case, "build" is one of them. Building containers is largely an indepenent goal and story of "serverless" or "FaaS", but I get why they are grouped together.

	package main

	import (
	"compress/gzip"
	"crypto/sha256"
	"encoding/json"
	"flag"
	"fmt"
	"io"
	"log"

	package crc4

	func Checksum(b []byte) uint8 {
	crc := 0xFFFF
	for bI := 0; bI < len(b); bI++ {
	bit := uint8(0x80)
	for bitI := 0; bitI < 8; bitI++ {
	xorFlag := ((crc & 0x8000) == 0x8000)
	crc = crc << 1
	if ((b[bI] & bit) ^ uint8(0xFF)) != uint8(0xFF) {

	root@slackware64-current:/home/vbatts# which go
	/usr/bin/go
	root@slackware64-current:/home/vbatts# go version
	go version go1.4.2 gccgo (GCC) 5.4.0 linux/amd64
	root@slackware64-current:/home/vbatts# export GOPATH=`mktemp -d`
	root@slackware64-current:/home/vbatts# export GOBIN=/usr/local/bin
	root@slackware64-current:/home/vbatts# go get github.com/vbatts/sl-feeds/cmd/sl-feeds
	root@slackware64-current:/home/vbatts# sl-feeds --sample-config > /tmp/sl-feeds.conf
	root@slackware64-current:/home/vbatts# sl-feeds --config /tmp/sl-feeds.conf -d /tmp/
	Writing to: "/tmp/"

	package main

	import (
	"log"

	"github.com/davecgh/go-spew/spew"
	grf "github.com/grafeas/client-go"
	)

	func main() {

	package main

	// spurred from discussion around https://github.com/kubernetes/kubernetes/pull/54257#issuecomment-338274869

	import (
	"flag"
	"fmt"
	"go/ast"
	"go/build"
	"go/parser"

	FROM buildpack-deps:stretch-scm

	# gcc for cgo
	RUN apt-get update && apt-get install -y --no-install-recommends \
	g++ \
	gcc \
	libc6-dev \
	make \
	pkg-config \
	&& rm -rf /var/lib/apt/lists/*

	ARG IMAGE=fedora
	ARG IMAGE_TAG=29

	FROM ${IMAGE}:${IMAGE_TAG}

	LABEL com.hashbangbash.image=${IMAGE}:${IMAGE_TAG}@${DIGEST}
	LABEL com.hashbangbash.image.repo=${IMAGE}
	LABEL com.hashbangbash.image.tag=${IMAGE_TAG}
	LABEL com.hashbangbash.image.digest=${DIGEST}

	package main

	import (
	"fmt"
	)

	func main() {
	var str = "apples and bananas; apples and bananas; apples and bananas; apples and bananas;"
	fmt.Println(ReplaceAll(str, "an", "op"))
	}