atomlab

Wireguard setup on Ubuntu 16.04/18.04

Install

# sudo add-apt-repository ppa:wireguard/wireguard
# sudo apt-get update
# sudo apt-get install wireguard

Generate keys

corvuscrypto

package main

import (
	"fmt"
	"os"
	"os/exec"
	"os/signal"
	"strconv"
	"syscall"
)

kwilczynski

provider "aws" {
    region = "us-east-1"
  }
  
  variable "lifecycle_rule" {
    default = {
      enabled = true
    }
  }
  

ross-newman

#!/bin/bash
echo "Building Debina 10 QEMU instance..."
wget https://cdimage.debian.org/cdimage/ports/10.0/powerpc/iso-cd/debian-10.0-powerpc-NETINST-1.iso
sudo apt install qemu
# Create new disk for install
qemu-img create -f qcow2 debian10.qcow2 2000M
# Boot the install image
qemu-system-ppc -L pc-bios -boot d -M mac99 -m 1024 -net nic,model=sungem -net user -hda debian10.qcow2 -cdrom ./debian-10.0-powerpc-NETINST-1.iso -g 1024x768x8
# Run the image
qemu-system-ppc -L pc-bios -boot c -prom-env "boot-device=hd:,\yaboot" -prom-env "boot-args=conf=hd:,\yaboot.conf" \

CAFxX

📂 Minimize allocations in Go

A collection of tips for when you need to minimize the number of allocations in your Go programs.

Use the go profiler to identify which parts of your program are responsible for most allocations.

⚠️ Never apply these tricks blindly (i.e. without measuring the actual performance benefit/impact). ⚠️

Most of these tricks cause a tradeoff between reducing memory allocations and other aspects (including e.g. higher peak memory usage, higher CPU usage, lower maintainability, higher probability of introducing subtle bugs). Only apply these tricks if the tradeoff in every specfic case is globally positive.

kwilczynski

SUBSYSTEM=="power_supply", KERNEL=="AC", ATTR{online}=="0", RUN+="/bin/systemctl start battery.target"
SUBSYSTEM=="power_supply", KERNEL=="AC", ATTR{online}=="1", RUN+="/bin/systemctl start ac.target"

kwilczynski

version: '2'

services:
  unifi:
    container_name: 'unifi'
    hostname: 'raspberry'
    image: 'jacobalberty/unifi:arm32v7-beta'
    network_mode: 'host'
    environment:
      TZ: 'Europe/Berlin'

kwilczynski

version: '2'

services:
  pihole:
    container_name: 'pihole'
    hostname: 'raspberry'
    image: 'pihole/pihole:latest'
    ports:
      - '53:53/tcp'
      - '53:53/udp'

kwilczynski

for f in *.txt; do \
    ( r=$(echo $f | sed -e 's/.*_//; s/\.txt//'); mkdir -p $r; grep -E '^ERROR' $f | \
        awk '{ print $2 }' | awk '{ print length, $0 }' | sort -n | awk '{ print $2 }' | \
            while read i; do ecl --config foundit --region $r allocators --all -f "instanceId:$i" --output json > "${r}/${i}.txt"; done ) &
done

danopia

package main

import (
	"fmt"
	"strings"

	"github.com/google/uuid"
	"github.com/olekukonko/tablewriter"
)