kemadz

#!/bin/sh
# Chroot Part of ArchLinux Virtualbox Guest Install Script

# timezone and hwclock
echo 'Asia/Shanghai' > /etc/timezone
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
# hardware clock in local time
hwclock --systohc --localtime

# hostname

kemadz

#!/bin/sh
# LiveISO Part of ArchLinux Virtualbox Guest Install Script

# system clock
# date `date +%m%d%H%M%Y.%S --date='-8 hour'`
ntpdate time.asia.apple.com

# partitions
sgdisk --zap-all /dev/sda
sgdisk \

kemadz

#user http http;
worker_processes 1;
worker_rlimit_nofile 64000;

error_log /var/log/nginx/error.log info;

events {
	worker_connections 16000;
	use epoll;
}

kemadz

RHEL Express

Introduction

• RHEL(Red Hat Enterprise Linux)
  • Most popular Enterprise Linux distribution.
  • The de facto standard.
  • It's open source.
  • But software updates are available only through a paid subscription service.
• CentOS(Community ENTerprise Operating System) RECOMMENDED

• Building from the source of RHEL.

kemadz

#include <stdio.h>

float InvSqrt(float x)
{
    float xhalf = 0.5f * x;
    int i = *(int*)&x;
    i = 0x5f375a86 - (i>>1);
    printf("%d", i);
    x = *(float*)&i;
    printf("%f", x);

kemadz

<?php
$cmd = 'date';
$desc = array(
    0 => array('pipe', 'r'),
    1 => array('pipe', 'w'),
    2 => array('pipe', 'w')
);
$pwd = '~';
$env = array();

kemadz

#!/usr/bin/python
# -*- coding: utf-8 -*-

import struct

'''
同花顺自选股文件格式：

0000000: 0900 0721 3030 3039 3731 0711 3630 3036  ...!000971..6006
0000010: 3738 0721 3030 3231 3134 0721 3030 3232  78.!002114.!0022

kemadz

#!/bin/sh
# Funtoo Install Script Chroot Part for Virtualbox

# 校准系统, UTC标准时间
echo "-*- Adjusting the time -*-"
ntpdate time1.google.com

# 创建分区
echo "-*- Partitioning the disk -*-"
sgdisk \

kemadz

#!/bin/sh
# Funtoo Install Script Chroot Part for Virtualbox

# 更新环境变量
source /etc/profile
export PS1="(chroot) $PS1"

# 设置时区和硬件时钟
echo "-*- locale -*-"
ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime

kemadz

ACCEPT_KEYWORDS="~amd64"
FEATURES="ccache mini-manifest parallel-fetch"
CHOST="x86_64-pc-linux-gnu"
CFLAGS="-march=core2 -O2 -pipe"

MAKEOPTS="-j3"
GENTOO_MIRRORS="http://mirrors.sohu.com/gentoo"
# GENTOO_MIRRORS="http://mirrors.163.com/gentoo"

# FETCHCOMMAND="/usr/bin/axel -a -n5 \"\${URI}\" -o \"\${DISTDIR}/\${FILE}\""