vncsna

set -e, -u, -o, -x pipefail

The set lines

• These lines deliberately cause your script to fail. Wait, what? Believe me, this is a good thing.
• With these settings, certain common errors will cause the script to immediately fail, explicitly and loudly. Otherwise, you can get hidden bugs that are discovered only when they blow up in production.

• set -euxo pipefail is short for:

set -e
set -u

f9n

Unbound Cheat Sheet

Installation

$ yum install -y unbound

Setup SSL keys for unbound-control

donvito

package main

import (
	"crypto/aes"
	"crypto/cipher"
	"crypto/rand"
	"encoding/hex"
	"fmt"
	"io"
)

robertkraig

FILE SPACING:

 # double space a file
 sed G

 # double space a file which already has blank lines in it. Output file
 # should contain no more than one blank line between lines of text.
 sed '/^$/d;G'

miguelmota

package ciphers

import (
	"crypto/rand"
	"crypto/rsa"
	"crypto/sha512"
	"crypto/x509"
	"encoding/pem"
        "log"
)

chrisveness

/**
 * Generates a MongoDB-style ObjectId in Node.js. Uses nanosecond timestamp in place of counter; 
 * should be impossible for same process to generate multiple objectId in same nanosecond? (clock 
 * drift can result in an *extremely* remote possibility of id conflicts).
 *
 * @returns {string} Id in same format as MongoDB ObjectId.
 */
function objectId() {
    const os = require('os');
    const crypto = require('crypto');

shrinath-shenoy

# Install pip install cryptography, path issue with openssl/aes.h will occur. The reason is Apple deprecated openssl and the compiler can't find the one installed by homebrew.
# So the following line will help.
env LDFLAGS="-L$(brew --prefix openssl)/lib" CFLAGS="-I$(brew --prefix openssl)/include" pip install cryptography

ihoneymon

[공통] 마크다운 markdown 작성법

영어지만, 조금 더 상세하게 마크다운 사용법을 안내하고 있는
"Markdown Guide (https://www.markdownguide.org/)" 를 보시는 것을 추천합니다. ^^

아, 그리고 마크다운만으로 표현이 부족하다고 느끼신다면, HTML 태그를 활용하시는 것도 좋습니다.

1. 마크다운에 관하여

kimus

UFW

I use Ubuntu’s Uncomplicated firewall because it is available on Ubuntu and it's very simple.

Install UFW

if ufw is not installed by default be sure to install it first.