Chun-wei Kuo Domon

How-to : Crashplan & Freenas

Pre-requisites

Crashplan account
FreeNAS-9.1.1-RELEASE-x64 (a752d35)

Install

Step 0: Skip if you are using existing install

Opening and closing an SSH tunnel in a shell script the smart way

I recently had the following problem:

From an unattended shell script (called by Jenkins), run a command-line tool that accesses the MySQL database on another host.
That tool doesn't know that the database is on another host, plus the MySQL port on that host is firewalled and not accessible from other machines.

We didn't want to open the MySQL port to the network, but it's possible to SSH from the Jenkins machine to the MySQL machine. So, basically you would do something like

ssh -L 3306:localhost:3306 remotehost

	#!/usr/bin/python
	#--coding:utf-8 --
	# E-HentaiのページURLをもとにギャラリー画像を取得するスクリプト


	# パッケージのインポート
	import os
	import sys
	import re
	import urllib2

	Ruby 2.1.0 in Production: known bugs and patches

	Last week, we upgraded the github.com rails app to ruby 2.1.0 in production.
	While testing the new build for rollout, we ran into a number of bugs. Most of
	these have been fixed on trunk already, but I've documented them below to help
	anyone else who might be testing ruby 2.1 in production.

	@naruse I think we should backport these patches to the ruby_2_1 branch and
	release 2.1.1 sooner rather than later, as some of the bugs are quite critical.
	I'm happy to offer any assistance I can to expedite this process.

	#!/usr/bin/env bash

	git log --all --since=midnight --author="$USER" $* --format='%d' --numstat \
	\| awk -f <(cat <<- 'SCRIPT'
	/\(/ { NB=NB+1 ; next }
	NF==3 { ADD=ADD+$1; DEL=DEL+$2; NC=NC+1 }
	END { printf "+%d, -%d in %d commit(s), %d branch(es)\n", ADD, DEL, NC, NB }
	SCRIPT)

	#!/usr/bin/env zsh

	if [[ $# != 1 ]]; then
	cat - << USAGE
	Usage: `basename $0` <branch>
	USAGE
	return 1
	fi

	local old_branch=$(git rev-parse --abbrev-ref HEAD)

	function RSpecCommands(bang)
	if !a:bang
	noremap <Leader>t :!bundle exec rspec %<CR>
	noremap <Leader>T :!bundle exec rspec %:<C-R>=line('.')<CR><CR>
	else
	silent! nunmap <Leader>t
	silent! nunmap <Leader>T
	endif
	endfunction

	vera:bloccit monicacardinal$ bundle exec bin/rails generate model Post title:string body text
	invoke active_record
	/Users/monicacardinal/.rvm/gems/ruby-2.0.0-p247/gems/activerecord-3.2.12/lib/active_record/dynamic_matchers.rb:55:in `method_missing': undefined method `migration_error=' for #<Class:0x007fa9d3fdaca8> (NoMethodError)
	from /Users/monicacardinal/.rvm/gems/ruby-2.0.0-p247/gems/activerecord-3.2.12/lib/active_record/railtie.rb:66:in `block (3 levels) in <class:Railtie>'
	from /Users/monicacardinal/.rvm/gems/ruby-2.0.0-p247/gems/activerecord-3.2.12/lib/active_record/railtie.rb:65:in `each'
	from /Users/monicacardinal/.rvm/gems/ruby-2.0.0-p247/gems/activerecord-3.2.12/lib/active_record/railtie.rb:65:in `block (2 levels) in <class:Railtie>'
	from /Users/monicacardinal/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:36:in `instance_eval'
	from /Users/monicacardinal/.rvm/gems/ruby-2.0.0-p247/gems/activesupport-3.2.12/lib/active_support/lazy_load_hooks.rb:36

	def foo(a=:default, b)
	puts "a=#{a}, b=#{b}"
	end

	foo(:value)
	foo(:x, :y)

	# Given an array of arrays s = [ [1,2,3], [4,5,6], ... ]
	# compute the Cartesian product among the elements of s.

	require 'pp'

	s = [[1, 2], [3, 4, 5], [6, 7, 8, 9]]
	pp s[1..-1].inject(s[0]){ \|m,v\| m = m.product(v).map(&:flatten) }
	[[1, 3, 6],
	[1, 3, 7],
	[1, 3, 8],