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terrywang / vcheck.c
Last active Aug 29, 2015
Check Linux VM hardware assisted virtualization type {Xen HVM,KVM,VMware}. Based on the C program written by http://www.vpsee.com
View vcheck.c
/*
* 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
terrywang / match.java
Created Feb 17, 2014
Java code backup ;-) To Compile: javac Match.java Usage: java Match <pattern> <text>
View match.java
/**
* 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
terrywang / .conkyrc
Last active Oct 12, 2015
Terry's conky config on Dell Latitude E6410 & Optiplex 9020
View .conkyrc
# Terry's conky config
# .conkyrc since Ubuntu 8.04 LTS
background yes
use_xft yes
xftfont DejaVu Sans:size=9
xftalpha 0.1
update_interval 1.0
total_run_times 0
own_window yes
own_window_type normal
View runkexec
#!/bin/bash
#
# runkexec
#
### BEGIN INIT INFO
# Provides: runkexec
# Required-Start:
# Required-Stop:
# Default-Stop:
# Description: Enable or disable fast system rebooting
@terrywang
terrywang / iptables.rules
Last active Oct 13, 2015
iptables rules for the Confluence wiki box
View iptables.rules
*filter
-P INPUT DROP
-P FORWARD ACCEPT
-P OUTPUT ACCEPT
-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
# -A INPUT -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -p tcp -m tcp --dport 22 -j ACCEPT
-A INPUT -p tcp -m tcp --dport 80 -j ACCEPT
-A INPUT -p icmp -m icmp --icmp-type 8 -j ACCEPT
@terrywang
terrywang / wiki_backup.sh
Last active Dec 9, 2015
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
View wiki_backup.sh
#!/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
@terrywang
terrywang / iptables.rules
Last active Dec 11, 2015
Generic iptables rules template, ready to be used;-)
View iptables.rules
*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
terrywang / chef_solo_bootstrap.sh
Last active Dec 14, 2015 — forked from ryanb/chef_solo_bootstrap.sh
Chef Solo bootstrap script using rbenv and ruby-build.
View chef_solo_bootstrap.sh
#!/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
terrywang / tunnel.sh
Last active Feb 28, 2016
SSH Tunnel
View tunnel.sh
#!/bin/bash
# --------------------------------------
#
# Title: SSH Tunnel / Socks5 Proxy Script
# Author: Terry Wang
# Email: i (at) terry (dot) im
# Homepage: http://terry.im
# File: tunnel.sh
# Created: 1 Oct, 2012
#
@terrywang
terrywang / rsync.rb
Last active Nov 2, 2016
rsync Homebrew formula for OS X, with fileflags, crtimes and hfs-compression patches. May be merged to https://github.com/Homebrew/homebrew-dupes soon ;-)
View rsync.rb
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