vbatts

package main

import (
        "bufio"
        "fmt"
        "io"
        "log"
        "os"
        "os/exec"
        "sort"

vbatts

batts.lan. {
        # i compiled in this unbound plugin, to get recursive lookups. On centos it needed the 'unbound-devel' package.
        unbound
        cache
        forward . 192.168.0.1
        errors
        log
}
 
. {

vbatts

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}

vbatts

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"))
}

vbatts

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.

vbatts

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/*

vbatts

package main

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

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

vbatts

package main

import (
  "log"

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

func main() {

vbatts

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/"

vbatts

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) {