Checking Out GitHub PRs

Example .git/config

[remote "upstream"]                                                            
    url = https://github.com/scikit-learn/scikit-learn                         
    fetch = +refs/heads/*:refs/remotes/upstream/*                              
    fetch = +refs/pull/*/head:refs/remotes/upstream/pr/*

Setup docker on CoreOS

A great intro to docker on CoreOS - it's as easy as

docker pull ubuntu
docker run -name="test" -t -i ubuntu /bin/bash

http://tonyhb.com/unsuck-your-vagrant-developing-in-one-vm-with-vagrant-and-docker

Force google-chrome to start new session

This command will force Google Chrome to start a new session, and disables any proxy settings you currently have

google-chrome --user-data-dir=/tmp --no-proxy-server

Data portals

http://data.gov

https://data.cityofchicago.org/browse?limitTo=datasets&utf8=%E2%9C%93

https://data.lacity.org/browse?limitTo=datasets&utf8=%E2%9C%93

SOCKS proxy with firefox about:config and ssh

A simple socks proxy can be made as follows

First, open Firefox and type about:config in the address bar

change the following items

network.proxy.socks localhost
network.proxy.socks_port 4321
network.proxy.type 1
network.proxy.socks_remote_dns true

ssh to your favorite machine with the -D flag
i.e.

ssh -D 4321 root@myserver.com

This will setup a SOCKS proxy to myserver.com and also protect your DNS requests

Links:
http://bityard.blogspot.fr/2009/01/make-openssh-socks-proxy.html

Unmount busy filesystem and find process linux

sudo umount /mntumount: /mnt: device is busy.
        (In some cases useful info about processes that use
         the device is found by lsof(8) or fuser(1))

lsof /mntCOMMAND   PID     USER   FD   TYPE DEVICE SIZE/OFF NODE NAME
bash            19005       user  cwd DIR   8,17        4096         2           /mnt


sudo kill -9 19005

Set iptables rulesets

Redirecting traffic to different ports - in this caser, redirect standard http requests and https requests to a server which doesn't run as root (all ports < 1000 require root access)

sudo iptables -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-port 8080
sudo iptables -t nat -A PREROUTING -p tcp --dport 443 -j REDIRECT --to-port 8443

To show the new rules, do

iptables -t nat --list