todgru

SSH Tunnel

Our db is hosted on Amazon. Our web server can connect to the db. Connections to the db are not allowed outside of the web server.

Run ssh tunnel locally:

This creates a tunnel from my local machine to the web server:

ssh -N -L 3307:my-rds-db.us-east-1.rds.amazonaws.com:3306 ec2-my-web-server.compute-1.amazonaws.com

pithyless

class Integer
  N_BYTES = [42].pack('i').size
  N_BITS = N_BYTES * 16
  MAX = 2 ** (N_BITS - 2) - 1
  MIN = -MAX - 1
end

p Integer::MAX              #=> 4611686018427387903
p Integer::MAX.class        #=> Fixnum
p (Integer::MAX + 1).class  #=> Bignum

nzakas

function SimpleMap() {  
    this._data = {};
}

SimpleMap.prototype = {
    
    get: function(key) {
        return this.has(key) ? this._data[key] : null;
    },

mullnerz

The command I use to archive a single website

wget -mpck --html-extension --user-agent="" -e robots=off --wait 1 -P . www.foo.com

Explanation of the parameters used

• -m (Mirror) Turns on mirror-friendly settings like infinite recursion depth, timestamps, etc.

mslinn

$ # see https://github.com/krobertson/deb-s3
$ sudo apt-get install ruby2.1-dev
$ sudo gem install deb-s3
$ cd ~/pound
$ aws s3api create-bucket --bucket mslinn-ppa --acl public-read
{
    "Location": "/mslinn-ppa"
}
$ deb-s3 upload --bucket mslinn-ppa pound_2.7f-0ubuntu1_amd64.deb 
$ deb-s3 verify -b mslinn-ppa

hynek

$ env APP_ENV=dev APP_PROMETHEUS_PORT=7000 SECRET_WHOIS_DEV_APP_PROMETHEUS_CONSUL_TOKEN=abc python app.py
WhoisConfig(env='dev', prometheus=Prometheus(address='127.0.0.1', port='7000', consul_token='abc'))

dusenberrymw

Quick cheat sheet of helpful tmux commands

1. tmux new - Create and attach to a new session.
2. tmux new -s NAME_HERE - Create and attach to a new session named NAME_HERE.
3. CTRL-b, d - Detach (i.e. exit) from the currently-opened tmux session (alternatively, tmux detach). Note, this means press and hold CTRL, press b, release both, press d.
4. tmux ls - Show list of tmux sessions.
5. tmux a - Attach to the previously-opened tmux session.
6. tmux a -t NAME_HERE - Attach to the tmux session named NAME_HERE.
7. CTRL-d - Delete (i.e. kill) currently-opened tmux session (alternatively tmux kill-session).
8. CTRL-b, [ - Enter copy mode, and enable scrolling in currently-opened tmux session. Press q to exit.
9. CTRL-b, " - Split window horizontally (i.e. split and add a pane below).

sebble

#!/bin/bash

USER=${1:-sebble}

STARS=$(curl -sI https://api.github.com/users/$USER/starred?per_page=1|egrep '^Link'|egrep -o 'page=[0-9]+'|tail -1|cut -c6-)
PAGES=$((658/100+1))

echo You have $STARS starred repositories.
echo

rain-1

WannaCry|WannaDecrypt0r NSA-Cyberweapon-Powered Ransomware Worm

• Virus Name: WannaCrypt, WannaCry, WanaCrypt0r, WCrypt, WCRY
• Vector: All Windows versions before Windows 10 are vulnerable if not patched for MS-17-010. It uses EternalBlue MS17-010 to propagate.
• Ransom: between $300 to $600. There is code to 'rm' (delete) files in the virus. Seems to reset if the virus crashes.
• Backdooring: The worm loops through every RDP session on a system to run the ransomware as that user. It also installs the DOUBLEPULSAR backdoor. It corrupts shadow volumes to make recovery harder. (source: malwarebytes)
• Kill switch: If the website www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com is up the virus exits instead of infecting the host. (source: malwarebytes). This domain has been sinkholed, stopping the spread of the worm. Will not work if proxied (source).

update: A minor variant of the viru

pierrejoubert73

How to add a collapsible section in markdown

1. Example

Click me

Heading

1. Foo
2. Bar
   • Baz

• Qux