zh-f

package main

import (
	"golang.org/x/tour/wc"
	"strings"
)

func WordCount(s string) map[string]int {
	counter := make(map[string]int)
	for _, v := range strings.Fields(s) {

zh-f

package main

import (
	"golang.org/x/tour/pic"
	"fmt"
)
	

func Pic(dx, dy int) [][]uint8 {
	fmt.Println(dx, dy)

zh-f

package com.company.retrofit2.annotation;

import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;

import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

/**

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Remove MySQL completely

1. Open the Terminal

2. Use mysqldump to backup your databases

3. Check for MySQL processes with: ps -ax | grep mysql

4. Stop and kill any MySQL processes

5. Analyze MySQL on HomeBrew:

brew remove mysql

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Set rz and sz on Mac

There are a mess of troubles in sending and receiving files from my macbook to dev server, since I had no permission to excute command scp on dev server. Here is a lightweight, quick, and convenience tools which related with ssh, called lrzsz. lrzsz is a unix communication package providing the XMODEM, YMODEM, ZMODEM file transefer protocol which usually has been already installed in most of servers.

Prerequisites

• iTerm2 is necessary. [Here][] is the official website.

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#!/usr/bin/python
# largely taken from python examples
# http://docs.python.org/library/email-examples.html

import os
import sys

from email import encoders
from email.mime.base import MIMEBase
from email.mime.multipart import MIMEMultipart

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linux查看httpd进程数

ps -ef | grep httpd | wc -l

查看Apache的并发请求数及其TCP连接状态

netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'

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git rebase --interactive HEAD~2

#  we are going to squash c into b 
pick b76d157 b
pick a931ac7 c

# squash c into b
pick b76d157 b
s a931ac7 c

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# Add Neutron security groups for ping and ssh

neutron security-group-rule-create   \
        --protocol icmp              \
        --direction ingress          \
        --remote-ip-prefix 0.0.0.0/0 \
        default

neutron security-group-rule-create   \
        --protocol tcp               \

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OS

Linux

$ vim ~/.config/pip/pip.conf
or $ vim ~/.pip/pip.conf

Windows

%APPDATA%\pip\pip.ini