surendharreddy

alias dnsa='function _dnsA(){ echo "$(dig +short A $1)"; };_dnsA' # Find A records for a domain
alias dnsc='function _dnsCNAME(){ echo "$(dig +short CNAME $1)"; };_dnsCNAME' # Find CNAME records for a domain
alias digr='function _digRedirect(){ echo "$(curl -Ls -o /dev/null -w %{url_effective} $1)"; };_digRedirect' # Find redirect URL for a domain
alias ip='ipconfig getifaddr en0' # Get local IP address
alias ipe='dig @resolver4.opendns.com myip.opendns.com +short' # Get external IP address

surendharreddy

Connecting to WiFi on Ubuntu without GUI

Navigate to /etc/netplan/50-cloud-init.yaml

network:
    ethernets:
         eth0:
             dhcp4: true
 match:

surendharreddy

Install Python on Mac using pyenv

1. Install dependencies using homebrew

brew install pyenv
brew install zlib
brew install sqlite

surendharreddy

const delay = (ms) => new Promise((res) => setTimeout(res, ms));

async function execute(count = 0) {
  for (let i = 1; i < count; i++) {
    // Run logic here
    await delay(i * 1000);
  }
}

execute(10);

surendharreddy

findme () {
    echo "Internal IP: $(ifconfig en0 inet | grep inet | awk '{print $2}')"
    echo "External IP: $(dig @resolver4.opendns.com myip.opendns.com +short)"
}

findme

surendharreddy

unbind-key C-b
set-option -g prefix C-f

# Refresh with source file
bind-key R source-file ~/.tmux.conf

# Use zsh as default shell
set-option -g default-shell /bin/zsh

# Enable mouse support

surendharreddy

brew cask install adoptopenjdk/openjdk/adoptopenjdk8
brew cask install android-sdk

# [alternative] echo to profile and source
export JAVA_HOME=`/usr/libexec/java_home -v 1.8`
export ANDROID_HOME=/usr/local/share/android-sdk

echo y | sdkmanager "system-images;android-29;google_apis;x86"
yes | sdkmanager --licenses

surendharreddy

from airflow import DAG
from airflow.operators import BashOperator
from datetime import datetime
import os
import sys

args = {
  'owner': 'airflow'
  , 'start_date': datetime(2017, 1, 27)
  , 'provide_context': True

surendharreddy

/**
 *  Base64 encode/decode
 *  Inspired by: https://github.com/davidchambers/Base64.js/blob/master/base64.js
 */
const chars =
  'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/='
export const Base64 = {
  btoa: (input) => {
    let str = input
    let output = ''

surendharreddy

function mapValues(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    result[key] = fn(obj[key], key);
    return result;
  }, {});
}

function pick(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    if (fn(obj[key])) {