albertywu

# filter rows in a file by line number / position
awk

# filter rows in a file by regex
grep

# filter cols in a file
awk

# transform rows by regex

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Map

replaces lines with a substring match of that line (capture groups)

sed -E 's/regex/string/'

echo "a secret: 12345" | sed -E 's/a secret: (.*)/\1/'

(outputs 12345)

albertywu

read plist -> xml file

defaults read -app Terminal | plutil -convert xml1 -o plist.xml -r -- -

albertywu

/**
 * @param {number[][]} matrix
 * @param {number} target
 * @return {boolean}
 */
var searchMatrix = function(matrix, target) {
  if (matrix.length === 0) return false
  let filteredRows = getFilteredRows(matrix, target)
  let filteredCols = getFilteredCols(matrix, target)

albertywu

/**
 * Encodes a tree to a single string.
 *
 * @param {TreeNode} root
 * @return {string}
 */
var serialize = function(root) {
  let result = []
 

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#!/usr/bin/env bash

# --- NORMAL-MODE BENCHMARKS ---
echo "--- web-code-base normal ---"
docker system prune --all --force
docker pull 027047743804.dkr.ecr.us-west-1.amazonaws.com/web-code-base@sha256:ddfb3a6aecf3fa9fbafceb600f5d670efed472196b0dc405fc23b897a2a100d1
time IMAGE="web-code-base:normal-build" docker-compose --file tools/ci/scripts/docker/docker-compose-base.yml build web-code-base

echo "--- web-code normal ---"
docker system prune --all --force 

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#!/bin/sh

# Called by "git push" after it has checked the remote status, 
# but before anything has been pushed.  

# If this script exits with a non-zero status nothing will be pushed.
#
# This hook is called with the following parameters:
#
# $1 -- Name of the remote to which the push is being done

albertywu

#!/bin/bash
# reproduces this failure locally: https://buildkite.com/uber/web-code-runner/builds/3499312#49338f5b-c4e8-4d4b-8b60-c2961f22657f

function docker_login_ecr {
  local DOCKER_CREDENTIAL_UBER_REGISTRY="027047743804.dkr.ecr.us-west-1.amazonaws.com"
  aws --region=us-west-1 ecr get-login-password | docker login --username AWS --password-stdin $DOCKER_CREDENTIAL_UBER_REGISTRY
}

docker_login_ecr # so we can pull down image from buildkite

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package main

import (
	"bytes"
	"fmt"
	"os"
	"os/exec"
	"strings"
)

albertywu

# run a command inside a docker container
docker run --rm node ls

# run multiple commands inside a docker container
docker run --rm node bash -c "ls && pwd"

# pipe commands from stdin
echo "ls && pwd" | docker run --rm -i node bash

# pipe commands from script