huangzworks

集群

CLUSTER INFO 打印集群的信息

CLUSTER NODES 列出集群当前已知的所有节点（node），以及这些节点的相关信息。

节点

diyism

0. DOS usb boot -> ubuntu live iso usb boot(too big), minimal_linux_live_20-Jan-2017_64-bit.iso(only 6.8MB)
1. diskgenius for dos -> testdisk("No Log\Proceed\Intel\Analyse\Quick Search", better than fdisk), gnome-disks
2. norton ghost for dos -> "fsarchiver savefs" "fsarchiver restfs", remastersys
3. windows xp -> debian+de(lxde, xfce), kali, ubuntu
4. ntldr boot.ini -> grub menu.lst, boot-repair
5. RemapKey/KeyTweak -> xmodmap -pke > ~/.Xmodmap then modify it, it will be loaded automatically
6. myboard.exe -> myboard.py + modified xorg-server + modified libgtk2.0-0 + fcitx-googlepinyin
7. MagicMover(D:\Program Files) -> remastersys restored sda1 + UnionFS-FUSE(pivot_root) sda2
8. WinHex -> wxHexEditor, bless, (sublime hexviewer only can edit one line)
9. emEditor(PHP/C braces outline, csv editor) -> sublime(ctrl+r to list functions, addon packages: AlignTab,SublimeCodeIntel,Codecs,ConvertToUTF8), SciTE(to view log files)

Jerry-Fix

#!/bin/bash

lines=$(sudo ss -lp   | grep $1 | awk '{print $3}' | cut -d: -f2 | sort | wc -l)

if [ "$1" == "mongod" ]
then
  portarray=(`sudo ss -lp | grep $1 | awk '{print $3}' | cut -d: -f2 | sort | head -n $(($lines/2)) 2>/dev/null`)
else
	portarray=(`sudo ss -lp | grep $1 | awk '{print $3}' | cut -d: -f2 | sort 2>/dev/null`)
fi

Jerry-Fix

#!/bin/bash
# Checkresults are returned as text or integer.
# The script expects one parameter: The check you want to perform .
# The second paramter, the value you want to grep, is optional.
# The third parameter, the adapter number, is optional. If adapter number is missing, ALL is set.
# Thanks to https://twiki.cern.ch/twiki/bin/view/FIOgroup/DiskRefPerc
# for the nice overview

# LSI Logic / Symbios Logic MegaRAID SAS 2208

fxn

ActiveRecord::ConnectionAdapters::PostgreSQLColumn.class_eval do
  prepend Module.new {
    def mpq?
      type == :mpq
    end
  
    def simplified_type(field_type)
      field_type == 'mpq' ? :mpq : super
    end

iwinux

openssl s_client -connect github.com:443 -showcerts 2>&1 < /dev/null | sed -ne '/-BEGIN CERTIFICATE-/,/-END CERTIFICATE-/p' | sed -ne '1,/-END CERTIFICATE-/p' > /tmp/github.com.pem

openssl x509 -in /tmp/github.com.pem -sha1 -noout -fingerprint

antirez

#!/usr/bin/tclsh8.5
#
# Usage: git-unmerged branch1 branch2
# 
# Shows all the non-common commits in the two branches, where non-common
# commits means simply commits with a unique commit *message*.

proc getlog branch {
    lrange [split [exec git log $branch --oneline] "\n"] 0 400
}

othercat

<?xml version="1.0"?>
<root>
  <item>
    <name>Enable at only Preview</name>
    <item>
      <name>Use J and K to Up and Down</name>
      <identifier>remap.app_preview_jk2UpDown</identifier>
      <only>PREVIEW</only>
      <autogen>--KeyToKey-- KeyCode::J, KeyCode::CURSOR_DOWN</autogen>
	  <autogen>--KeyToKey-- KeyCode::K, KeyCode::CURSOR_UP</autogen>

liweinan

#对non-lock queue的简单分析#

今天看到 @梁斌penny 在打擂：http://coderpk.com

内容如下：

游戏规则： 比赛由pennyliang，就是本人梁斌同志坐庄，我提交baseline代码（可执行程序），和部分代码，方便统一游戏规则。 10亿数据（每个数据看作一个同志），1个队列，10个线程push，10个线程pop,走完一遍，考察总耗时，耗时最短的获胜。我的代码在我自己机器10亿数据排队进出,耗时1分28秒，内存峰值256MB（CPU16核，真8核那种，Intel(R) Xeon(R) CPU E5540 @ 2.53GHz）

rainly

--
-- Setup - Add plpgsql, create a parent table, create an initial child table,
--         create the trigger and the initial trigger function. 
--

-- We'll need plpgsql, so create it in your db if it's not already available.
CREATE LANGUAGE plpgsql;

-- Create a table to act as parent with the appropriate columns for your data.
CREATE TABLE my_schema.my_data (name varchar(24), create_date timestamp);