jrelo

# Unpack
gzip -cd /boot/initramfs.example | cpio -i

# Repack
find . | cpio --dereference -o -H newc | gzip > /boot/initramfs.example

jrelo

/**
  * Divide  : Divide the n-element array into two n/2-element
  *           sub-arrays
  * Conquer : Sort the two sub-arrays recursively using
  *           merge sort
  * Combine : Merge the two sorted subsequences to form the
  *           sorted array
  **/

#include<stdio.h>

jrelo

http://brainwreckedtech.wordpress.com/2012/01/08/howto-convert-vdis-between-fixed-sized-and-dynamic-in-virtualbox/ http://www.webdesignblog.asia/software/linux-software/resize-virtualbox-disk-image-manipulate-vdi/#comment-474

While there is no way to actually switch a VDI between fixed-size and dynamic, you can clone the existing VDI into a new one with different settings with VBoxManage.

VBoxManage clonehd [old-VDI] [new-VDI] --variant Standard
VBoxManage clonehd [old-VDI] [new-VDI] --variant Fixed

If you want to expand the capacity of a VDI, you can do so with

jrelo

TARGET = test

CC = gcc

CFLAGS = -c -v

VPATH = src
SRC = test.c
OBJ = $(SRC:.c=.o)

jrelo

via: http://groups.google.com/group/phillycocoa/browse_thread/thread/2d05f3eac5a7d260?hl=en

revert file:
git checkout HEAD path/to/file
OR
git checkout filename

pluck one file from another branch
git checkout Branch path/to/file

jrelo

Links

• The top 5 proactive measures to minimize MySQL downtime
• The small improvements of MySQL 5.6: Duplicate Index Detection
• Keynotes, BOFs, and the Community Networking Reception at Percona Live MySQL Conference and Expo
• Analyzing Slow Query Table in MySQL 5.6
• Percona Toolkit by example – pt-stalk
• innodb_stats_on_metadata and slow queries on INFORMATION_SCHEMA
• [Webinar: SQL Query

jrelo

#!/bin/sh
#
# Use posixregex CLI tool from: https://github.com/syzdek/dmstools/blob/master/src/posixregex.c

RE_IPV4="((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])"

posixregex -r "^(${RE_IPV4})$" \
   127.0.0.1 \
   10.0.0.1 \
   192.168.1.1 \

jrelo

#!/usr/bin/perl -w
##############################################################################
##  
##  Written by: Jared Cheney <[email protected]>
##
##  Original Template written by: 
##     Brandon Zehm <[email protected]> and Jared Cheney <[email protected]>
##  
##  License:
##  

jrelo

#!/usr/bin/env bash

set -x

NS="ns1"
VETH="veth1"
VPEER="vpeer1"
VETH_ADDR="10.200.1.1"
VPEER_ADDR="10.200.1.2"

jrelo

#!/bin/bash
#more methods: http://rtomaszewski.blogspot.com/2012/11/how-to-forcibly-kill-established-tcp.html
if [ $# -lt 1 ];
  then
  printf "Usage: $0 <IP>\n" $#
  exit 0
fi
raddr=$1
printf "Killing TCP connections to/from ${raddr}...\n"
iptables -I INPUT -s ${raddr} -p tcp -j REJECT --reject-with tcp-reset