obalunenko

Kafka Topics

List existing topics

bin/kafka-topics.sh --zookeeper localhost:2181 --list

Describe a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --describe --topic mytopic

Purge a topic

bin/kafka-topics.sh --zookeeper localhost:2181 --alter --topic mytopic --config retention.ms=1000

... wait a minute ...

obalunenko

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

obalunenko

#!/bin/sh

git ls-files |grep  ".go" | grep -v "vendor"|  xargs wc -l

obalunenko

"Help, I keep getting a 'Permission Denied (publickey)' error when I push!"

This means, on your local machine, you haven't made any SSH keys. Not to worry. Here's how to fix:

1. Open git bash (Use the Windows search. To find it, type "git bash") or the Mac Terminal. Pro Tip: You can use any *nix based command prompt (but not the default Windows Command Prompt!)
2. Type cd ~/.ssh. This will take you to the root directory for Git (Likely C:\Users\[YOUR-USER-NAME]\.ssh\ on Windows)
3. Within the .ssh folder, there should be these two files: id_rsa and id_rsa.pub. These are the files that tell your computer how to communicate with GitHub, BitBucket, or any other Git based service. Type ls to see a directory listing. If those two files don't show up, proceed to the next step. NOTE: Your SSH keys must be named id_rsa and id_rsa.pub in order for Git, GitHub, and BitBucket to recognize them by default.
4. To create the SSH keys, type ssh-keygen -t rsa -C "your_email@example.com". Th

obalunenko

sudo ln -s  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/CoreFoundation.framework /Library/Frameworks/
sudo ln -s  /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/System/Library/Frameworks/Security.framework /Library/Frameworks/

obalunenko

package main

import (
	"fmt"
	"reflect"
	"sort"
)

func main() {

obalunenko

Keybase proof

I hereby claim:

• I am obalunenko on github.
• I am obalunenko (https://keybase.io/obalunenko) on keybase.
• I have a public key ASBT3A5w3hYpe-Htc82Bp4xV74cZaNOQsGZ5jtWPAklCRQo

To claim this, I am signing this object:

obalunenko

#!/usr/bin/env bash

set -Eeuo pipefail

function cleanup() {
  trap - SIGINT SIGTERM ERR EXIT
}

trap cleanup SIGINT SIGTERM ERR EXIT

obalunenko

{
  "Use Non-ASCII Font" : false,
  "Tags" : [

  ],
  "Ansi 12 Color" : {
    "Green Component" : 0.81066548824310303,
    "Red Component" : 0.43880558013916016,
    "Blue Component" : 0.99898606538772583
  },

obalunenko

#!/bin/sh

set -eu

SCRIPT_NAME="$(basename "$0")"

echo "${SCRIPT_NAME} is running... "

PROTOC_VERSION=3.19.1
PROTOC_OS=""