kephin

kubectl get services                # List all services 
kubectl get pods                    # List all pods
kubectl get nodes -w                # Watch nodes continuously
kubectl version                     # Get version information
kubectl cluster-info                # Get cluster information
kubectl config view                 # Get the configuration
kubectl describe node <node>        # Output information about a node
kubectl get pods                         # List the current pods
kubectl describe pod <name>              # Describe pod <name>
kubectl get rc                           # List the replication controllers

kephin

echo kevin | base64 #a2V2aW4K
echo a2V2aW4K | base64 -D # kevin

kephin

const express = require('express')

const app = express()

app.use(express.json()) // for parsing application/json
app.use(express.urlencoded({ extended: true })) // for parsing application/x-www-form-urlencoded

app.get('/:greet', (req, res) => {
  // curl http://localhost:8080/hello\?name\=kevin
  console.log('====================================')

kephin

/*
<button onclick="start()">Start</button>
<button onclick="cancel()">Cancel</button>
*/

let cancelTokenSource
const start = () => {
  cancelTokenSource = axios.CancelToken.source()
  axios
    .get('http://localhost:8080', { cancelToken: cancelTokenSource.token })

kephin

# openssl
openssl genrsa -out private.pem 2048
openssl rsa -in private.pem -pubout -out public.pem

# ssh-keygen
ssh-keygen -t rsa -P "" -b 4096 -m PEM -f jwtRS256.key
ssh-keygen -e -m PEM -f jwtRS256.key > jwtRS256.key.pub

kephin

// 1
let body = []
proxyRes.on('data', chunk => {
  body.push(chunk)
})
proxyRes.on('end', () => {
  body = Buffer.concat(body).toString()
    .replace(/\/dist\/rsa-ui/g, `${MLISA_BASE_URL_PREFIX}/dist/rsa-ui`)
  isTextFile(req)
    ? res.end(body)

kephin

Common Options

-#, --progress-bar Make curl display a simple progress bar instead of the more informational standard meter.

-b, --cookie <name=data> Supply cookie with request. If no =, then specifies the cookie file to use (see -c).

-c, --cookie-jar <file name> File to save response cookies to.

kephin

// mock Date.now
const realDateNow = Date.now
Date.now = jest.fn(() => 11421423523)

// set back
Date.now = realDateNow

kephin

describe('...', () => {
  const RealDate = Date;

  function mockDate(isoDate) {
    global.Date = class extends RealDate {
      constructor(...args) {
        if (args.length) return new RealDate(...args);
        return new RealDate(isoDate);
      }
    };

kephin

// Start a method chain that will throw an error:
// --> foo() [catches error]
// -----> bar() [catches / rethrows error]
// --------> baz() [throws error]

foo();

function foo() {
  try {
    bar();