mmasashi

Prepare for OS update (事前準備)

• Backup data to Time machine drive
• Backup some important data to HDD drive manually
• Make a list which directory should be copied into the new OS

Clean Install Yosemite (Yosemiteのクリーンインストール)

Create YOSEMITE Boot USB Drive (Yosemiteのブートドライブを作成)

mmasashi

# gzsplit.rb
# split gz files into pieces 
# usage: ruby gzsplit [file-name] [lines-per-file]
require 'zlib'
require 'fileutils'

OUTPUT_DIR = "splited_files"

file_name = ARGV[0] || "20130910-03_01_00.gz"
lines_per_file = ARGV[1] ? ARGV[1].to_i : 5

mmasashi

#!/bin/bash

tcpdump -s0 -i eth0 -X port 44567 -w test.cap

mmasashi

ubuntu@box432:~$ lsb_release -a
No LSB modules are available.
Distributor ID:    Ubuntu
Description:    Ubuntu 12.04.5 LTS
Release:    12.04
Codename:    precise

ubuntu@box432:~$ sudo apt-get install libboost-all-dev
Reading package lists... Done
Building dependency tree

mmasashi

We're using git's Merge commit history to list features&bug fixes in a release tag.  But I found cases where no merge commit was made as a result of `git merge`.  According to this article (http://arjanvandergaag.nl/blog/clarify-git-history-with-merge-commits.html) it's due to fast-forward merge.  To prevent it from happening, use `--no-ff` option when you merge.  e.g. `git merge --no-ff feature/u483-asdf-asdf`  This create a merge commit even if fast-forward merge is possible.  Or, you can make it default with `git config --add merge.ff false`
Omit them needless merge commits. Add them to convey information.

mmasashi

RSpec::Matchers.define :terminate do |code|
  actual = nil

  def supports_block_expectations?
    true
  end

  match do |block|
    begin
      block.call

mmasashi

## rvm bash install script reading memo
## Based on https://github.com/wayneeseguin/rvm/blob/1.25.28/binscripts/rvm-installer

#!/usr/bin/env bash

# enable extended pattern matching
# shopt command changes the shell optional behavior
# extglob option enables you to write like `ls !(b*)`
# http://stackoverflow.com/questions/216995/how-can-i-use-inverse-or-negative-wildcards-when-pattern-matching-in-a-unix-linu
shopt -s extglob

mmasashi

cat /dev/urandom | LC_CTYPE=C tr -dc '[:alnum:]' | head -c 40 && echo

mmasashi

$ gem -v
2.0.3
$ gem list rubygems-update
$ gem uninstall -v 2.0.3 rubygems-update 

$ gem install -v 1.8.24 rubygems-update
$ update_rubygems
$ gem -v
1.8.24

mmasashi

dir_path=$(cd $(dirname $0);pwd)