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Vagrant with Ansible Provisioner on Windows

Long story short, ansible does not work on a Windows control machine, so you basically have to:

• either run ansible --connection=local ... in the target vm
• set up a separate control vm where ansible is installed via shell provisioner

Below are Vagrantfile examples for both approaches

Within the Target VM

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# Install tmux on rhel/centos 7

# install deps
yum install gcc kernel-devel make ncurses-devel

# DOWNLOAD SOURCES FOR LIBEVENT AND MAKE AND INSTALL
curl -OL https://github.com/libevent/libevent/releases/download/release-2.1.8-stable/libevent-2.1.8-stable.tar.gz
tar -xvzf libevent-2.1.8-stable.tar.gz
cd libevent-2.1.8-stable
./configure --prefix=/usr/local

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Bento, a project by the same company that makes Chef, is a Packer-based project for building base boxes. Unlike http://vagrantbox.es, Bento just uses base operating systems from the manufacturers with no pre-installed software. All the boxes are hosted on S3 in the following format:

https://opscode-vm-bento.s3.amazonaws.com/vagrant/PROVIDER/opscode_OS-VERSION_chef-provisionerless.box

For example, Ubuntu 13.04 lives here for VirtualBox:

https://opscode-vm-bento.s3.amazonaws.com/vagrant/virtualbox/opscode_ubuntu-13.04_chef-provisionerless.box

And the VMWare equivalent box lives:

harrifeng

Either you use .babelrc to specify environment specific settings (plugins or transforms for example) using the env key:

{
  "presets": ["es2015", "stage-0", "react"],
  "env": {
    "development": {
      "plugins": [
        ["transform-object-rest-spread"],
 ["transform-react-display-name"],

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open -a Google\ Chrome\ Canary --args --disable-web-security

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# 1) Create your private key (any password will do, we remove it below)

$ cd ~/.ssh
$ openssl genrsa -des3 -out server.orig.key 2048


# 2) Remove the password

$ openssl rsa -in server.orig.key -out server.key

harrifeng

ACM大量习题题库 

ACM大量习题题库 
现在网上有许多题库，大多是可以在线评测，所以叫做Online Judge。除了USACO是为IOI准备外，其余几乎全部是大学的ACM竞赛题库。

USACO

http://ace.delos.com/usacogate

美国著名在线题库，专门为信息学竞赛选手准备

harrifeng

import sys
import signal
from threading import Thread
from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler

class PUTHandler(BaseHTTPRequestHandler):
    def do_PUT(self):
        print "----- SOMETHING WAS PUT!! ------"
        print self.headers
        length = int(self.headers['Content-Length'])

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# Torndb is a very thin wrapper around MySQLdb that makes it even easier to use MySQL.
# Because it is very light, one can just go through the one-file python source
# to learn how to use it.

# Installation: pip install torndb
# Official doc: http://torndb.readthedocs.org/en/latest/
# Source: https://github.com/bdarnell/torndb/blob/master/torndb.py

from torndb import Connection

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#!/usr/bin/tclsh8.5
#
# Usage: git-unmerged branch1 branch2
# 
# Shows all the non-common commits in the two branches, where non-common
# commits means simply commits with a unique commit *message*.

proc getlog branch {
    lrange [split [exec git log $branch --oneline] "\n"] 0 400
}