terrywang’s gists

terrywang / match.java

Created February 17, 2014 02:39

Java code backup ;-) To Compile: javac Match.java Usage: java Match <pattern> <text>

	/**
	* The Match class implements Brute Force pattern matching.
	*
	* @author Terry Wang
	* @version 0.2
	*/
	public class Match {

	/** variable to record the position of matching */
	private static int position = 0;

terrywang / vcheck.c

Last active August 29, 2015 13:56

Check Linux VM hardware assisted virtualization type {Xen HVM,KVM,VMware}. Based on the C program written by http://www.vpsee.com

	/*
	* Use CPUID opcode from EAX register to determine Linux VM Virtualization type {Xen HVM,KVM,VMware}
	* Based on the c program written by http://www.vpsee.com ;-)
	*/
	#include <stdio.h>
	#include <string.h>

	#define HYPERVISOR_INFO 0x40000000

	#define CPUID(idx, eax, ebx, ecx, edx) \

terrywang / rsync.rb

Last active November 2, 2016 17:15

rsync Homebrew formula for OS X, with fileflags, crtimes and hfs-compression patches. May be merged to https://github.com/Homebrew/homebrew-dupes soon ;-)

	require 'formula'

	class Rsync < Formula
	homepage 'http://rsync.samba.org/'
	url 'http://rsync.samba.org/ftp/rsync/src/rsync-3.1.0.tar.gz'
	sha1 'eb58ab04bcb6293da76b83f58327c038b23fcba3'

	depends_on :autoconf

	def patches

terrywang / Berkshelf

Last active October 25, 2019 23:20

Vagrantfile sample for Vagrant, the following plugins are required: vagrant-berkshelf, vagrant-omnibus, vagrant-proxyconf, vagrant-vbguest, vagrant-proxyconf. Berksfile defines cookbooks and their dependencies. Run berks install to install cookbooks and dependencies.

	site :opscode

	cookbook 'nginx', '~> 2.4.4'

terrywang / jdk.sh

Last active March 27, 2019 05:33

Oracle JDK Download Script, the magic cookie comes from oab-java6 ;-) It **ONLY** works for latest Oracle JDK 7 and 8 update releases.

	#!/bin/bash
	# --------------------------------------
	#
	# Title: Oracle JDK Download Script
	# Author: Terry Wang
	# Email: i (at) terry (dot) im
	# Homepage: http://terry.im
	# File: jdk.sh
	# Created: 28 August, 2013
	#

terrywang / .bashrc

Last active December 6, 2023 08:52

Bash 5.2.x dot files for Linux and macOS, extracted from Ubuntu which by default does NOT use $HOME/.bash_profile for interactive login shells.

	# ~/.bashrc: executed by bash(1) for non-login shells.
	# see /usr/share/doc/bash/examples/startup-files (in the package bash-doc)
	# for examples

	# If not running interactively, don't do anything
	# [ -z "$PS1" ] && return
	case $- in
	i) ;;
	*) return;;
	esac

terrywang / chef_solo_bootstrap.sh

Last active December 14, 2015 10:10 — forked from ryanb/chef_solo_bootstrap.sh

Chef Solo bootstrap script using rbenv and ruby-build.

	#!/bin/bash
	# --------------------------------------
	#
	# Title: Chef Solo Bootstrap
	# Author: Terry Wang
	# Email: i (at) terry (dot) im
	# Homepage: http://terry.im
	# File: bootstrap-ubuntu.sh
	# Created: Feb, 2013
	#

terrywang / iptables.rules

Last active December 11, 2015 12:38

Generic iptables rules template, ready to be used;-)

	*filter
	# Allow all loopback (lo) traffic and drop all traffic to 127.0.0.0/8 that doesn't use lo
	-A INPUT -i lo -j ACCEPT
	-A INPUT -d 127.0.0.0/8 -j REJECT
	# Accept all established inbound connections
	# -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
	# conntrack match is recommended
	-A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
	# Allow all outbound traffic
	# It can be modified to allow certain traffic ONLY

terrywang / dumpAccountImage.sh

Last active March 26, 2017 10:04

Extract / dump Mac OS X user account picture using dscl (Directory Service command line utility) and convert (hexdump into binary) it to to a JPEG file. NOTE: The resolution can vary depending on the original size of the photo and what version of the operating system you're using when it is saved.

dscl . -read /Users/username JPEGPhoto | tail -1 | xxd -r -p > /path/to/accountImage.jpg

terrywang / wiki_backup.sh

Last active December 9, 2015 20:39

Wiki backup script, use mysqldump to dump confluence wiki database, pipe it to xz for compression and then pipe to pv to display progress and finally > wiki.xz

	#!/bin/sh

	# One liner
	# mysqldump to stdout, pipe to xz for compression and then pipe to pv redirect to xz file
	# pv is OPIONTAL, it is for showing the progress ONLY
	# The - after xz -z is OPTIONAL, by default xz reads from stdin and writes to stdout
	mysqldump -u confluenceuser -ppassword confluence \| xz -z \| pv > wiki_$(date +"%Y%m%d").xz

	# Other 2 equivalant variants
	# mysqldump -u confluenceuser -ppassword confluence \| xz -z \| > wiki_$(date +"%Y%m%d").xz

Terry Wang terrywang