xtao

import imaplib, email, email.parser, email.policy
import html2text
import pprint, sys

#
# Utilities for Debug
#
pp = pprint.PrettyPrinter(indent=4, width=80)

def myprint(str):

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# 生成 dhparam.pem 文件, 在命令行执行任一方法:

# 方法1: 很慢
openssl dhparam -out /etc/nginx/ssl/dhparam.pem 2048

# 方法2: 较快
# 与方法1无明显区别. 2048位也足够用, 4096更强
openssl dhparam -dsaparam -out /etc/nginx/ssl/dhparam.pem 4096

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# http://code.activestate.com/recipes/474088-tail-call-optimization-decorator/

#!/usr/bin/env python2.4
# This program shows off a python decorator(
# which implements tail call optimization. It
# does this by throwing an exception if it is 
# it's own grandparent, and catching such 
# exceptions to recall the stack.

import sys

xtao

In this article, I will share some of my experience on installing NVIDIA driver and CUDA on Linux OS. Here I mainly use Ubuntu as example. Comments for CentOS/Fedora are also provided as much as I can.

Table of Contents

• Install NVIDIA Graphics Driver via apt-get
• Install NVIDIA Graphics Driver via runfile
  • Remove Previous Installations (Important)
  • Download the Driver
  • Install Dependencies
  • Creat Blacklist for Nouveau Driver

• Stop lightdm/gdm/kdm

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## Internal
- SSH
- Python
- YAML

## Concepts
- Inventory
- Playbooks
 - Roles
  - Tasks/Handlers/Vars

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# author: jiangchengyao@gmail.com

[mysql]
prompt = [\\u@\\h][\\d]>\\_

[mysqld]
# basic settings #
user = mysql
sql_mode = "STRICT_TRANS_TABLES,NO_ENGINE_SUBSTITUTION,NO_ZERO_DATE,NO_ZERO_IN_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER"
autocommit = 1

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#! /usr/bin/perl

while ($line = <>){
    if (($line !~  /BEGIN TRANSACTION/) && ($line !~ /COMMIT/) && ($line !~ /sqlite_sequence/) && ($line !~ /CREATE UNIQUE INDEX/)){

       	if ($line =~ /CREATE TABLE \"([a-z_]*)\"(.*)/){
       		$name = $1;
       		$sub = $2;
       		$sub =~ s/\"//g;
       		$line = "DROP TABLE IF EXISTS $name;\nCREATE TABLE IF NOT EXISTS $name$sub\n";

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""" Consistent load-balancing.

We have a few servers and we want a load-balancer to
distribute incoming requests across them in a deterministic
and consistent way - without keeping any counter to make the
decision.

Removing a backend server should not impact users on other
servers.

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import urllib

response = urllib.urlopen('http://192.168.77.21:9001/v2/coreinfowatcher?watch=1&heartbeat=1')
for line in response:
    print line