kaiix

import socket
from pyos import Scheduler
from pyos import NewTask
from pyos import Accept, Send, Receive


def handle_client(client, addr):
    print "Connection from",  addr
    while True:
        data = yield Receive(client, 65536)

kaiix

# http://blog.hakril.net/articles/0-understanding-python-by-breaking-it.html

def get_ref(obj):
    """ returns a c_size_t, which is the refcount of obj """
    return ctypes.c_size_t.from_address(id(obj))

kaiix

/var/log/mongodb/mongod.log {
    hourly
    missingok
    rotate 5
    compress
    delaycompress
    notifempty
    create 0640 mongodb mongodb
    sharedscripts
    postrotate

kaiix

on cuckoo()
	set dateStr to time string of (current date)
	set meow to POSIX path of (path to resource "meow.mp3")
	display notification dateStr with title "Meow"
	do shell script ("afplay " & meow)
end cuckoo

script main
	cuckoo()
end script

kaiix

import math
from collections import Counter

def tf(word, doc):
  word_counter = Counter(doc.split())
  return word_counter(word) / sum(word_counter.values())
  
def idf(word, corpus):
  return math.log(len(corpus) / (1 + sum(1 for doc in corpus if word in doc)))
  

kaiix

EC2 相關設定

記憶體

1. 設定swap（預設為60, 當系統使用到超過40% memory, 就會嘗試使用swap）

   sysctl -w vm.swappiness=0   # from 60 -> 0
   

kaiix

#include <unistd.h>
#include <stdio.h>
#include <setjmp.h>
#include <signal.h>

jmp_buf j;

void try()
{
    printf("call try\n");

kaiix

Linux NetFilter, IP Tables and Conntrack Diagrams

IPTABLES TABLES and CHAINS

IPTables has the following 4 built-in tables.

1) Filter Table

Filter is default table for iptables. So, if you don’t define you own table, you’ll be using filter table. Iptables’s filter table has the following built-in chains.

kaiix

import csv
import os
import plistlib


def parse_safari_reading_list_plist():
    plist = plistlib.load(
        open(os.path.expanduser('~/Library/Safari/Bookmarks.plist'), 'rb'))

    items = []

kaiix

__kubectl_init_completion()
{
    COMPREPLY=()
    _get_comp_words_by_ref "$@" cur prev words cword
}

__kubectl_get_pod()
{
    if declare -F _init_completion >/dev/null 2>&1; then
        _init_completion -s || return