Kei Arima kei2100

kei2100 / closer_test

Created December 8, 2015 13:07

closer test golang

	// Try to close the reader if the io.Closer interface is implemented
	if closer, ok := src.(io.Closer); ok {
	closer.Close()
	}

kei2100 / ulimit sysctl

Created October 30, 2015 06:15

ulimit sysctl memo

	cat <<EOF >> /etc/security/limits.conf
	root soft nofile 65536
	root hard nofile 65536
	root soft stack 16384
	root hard stack 32768
	root soft nproc 16384
	root hard nproc 32768

	* soft nofile 65536
	* hard nofile 65536

kei2100 / HotpUtil.java

Last active August 29, 2015 14:16

RFC4226 HOTP generator

	import org.apache.commons.codec.digest.HmacUtils;

	import java.nio.ByteBuffer;

	public class HotpUtil {

	private static final int LONG_BYTE_SIZE = Long.SIZE / Byte.SIZE;

	private static final int MAX_DIGITS = 9;

kei2100 / gist:ac19822280dc4aff997a

Created December 27, 2014 08:40

Java grep stacktrace log

pcregrep -nM '^.+\n(\w+\.)+\w*Exception:.*(\n\s+at .+|\nCaused by: .+(\n### .+)*)+' log

kei2100 / proxy.js

Created October 30, 2014 06:52

local tcp proxy using tcp-proxy.js

	var tcpProxy = require('tcp-proxy');

	var servers = [];

	[
	{dst: '192.168.33.10:3306', src: 3306},
	{dst: '192.168.33.10:6379', src: 6379},
	{dst: '192.168.33.10:11211', src: 11211}
	].forEach(function(config) {
	var destHost = config.dst.split(':')[0];

kei2100 / mysql dump database

Created October 27, 2014 04:07

mysql dump database

	mysqldump -uroot --opt {database} > {database}.dump
	mysqladmin -uroot create {database}
	mysql -uroot {database} < {database}.dump

kei2100 / gist:5c14f3163b1d85331e83

Last active August 29, 2015 14:06

mysql yum install

	yum install http://dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
	yum install mysql mysql-community-devel mysql-community-server

	edit my.cnf

	mysql_install_db
	/etc/init.d/mysqld start

	CREATE DATABASE mydb;
	GRANT ALL PRIVILEGES ON . TO 'myuser'@'%' IDENTIFIED BY 'mypass' WITH GRANT OPTION;

kei2100 / webstrom_setting_memo

Created December 23, 2013 05:46

WebStorm setting memo for node.js development

	Preference > JavaScript > Libraries

	* Node.js vXX.XX Core Modules -> check
	* Node.js Globals -> check

kei2100 / nodebrew.rb

Created December 21, 2013 13:49

chef recipe nodebrew

	#
	# Cookbook Name:: base-vagrant
	# Recipe:: nodebrew
	#
	# Copyright 2013, YOUR_COMPANY_NAME
	#
	# All rights reserved - Do Not Redistribute
	#

	# install nodebrew

kei2100 / backup_jenkins.sh

Created December 8, 2013 05:27

Jenkins backup script