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How To Work With Multiple Github Accounts on a single Machine

Let suppose I have two github accounts, https://github.com/rahul-office and https://github.com/rahul-personal. Now i want to setup my mac to easily talk to both the github accounts.

NOTE: This logic can be extended to more than two accounts also. :)

The setup can be done in 5 easy steps:

Steps:

• Step 1 : Create SSH keys for all accounts
• Step 2 : Add SSH keys to SSH Agent

windsting

While accessing serial port on Raspberry Pi 4 with Manjaro(ARM Mate) installed like:

stcgal -P auto

got an error:

Serial port error: [Errno 13] could not open port /dev/tty1: [Errno 13] Permission denied: '/dev/ttyUSB0'

windsting

Use alt-f and alt-b to jump forward and backward in command line on macOS

On macOS, the default behavior of key combination alt-f and alt-b are insert characters ƒ and ∫, which is conflict with the navigation.

To cope with this, you need to change settings of terminal emulator application.

Terminal - the default one on macOS

The operation below is tested on Version 2.10 (433).

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#!/usr/bin/env python
#coding=utf-8

from config import *
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
from collections import namedtuple
import os
import sys
import time

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#!/usr/bin/env python
#coding=utf-8

# 7个鸡蛋，放进3个不同的碗，允许有空碗，有多少种放法？
#   use function `place` to get answer
#   and `place_non` for **avoid empty bowl**

def gen_counts(prev, cur):
    str =  f"{cur}" if prev == "" else f"{prev},{cur}"
    return str

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Anti-GFW

All these command tested on Ubuntu 18.04.

BBR

# add config
sudo echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
sudo echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf

windsting

汉语注音与汉语拼音对照表

此表摘自维基百科的页面 注音符號

部分“字源”中的字形图片缺失，可以到上面的页面进行查阅。

声母

注音	字源	拼音	例子

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/*! normalize.css v2.1.3 | MIT License | git.io/normalize */

/* ==========================================================================
   HTML5 display definitions
   ========================================================================== */

/**
 * Correct `block` display not defined in IE 8/9.
 */

windsting

Starting Postgresql in Windows without Install

Problem

This is a question that comes up quite often by windows users, so thought we would share how we normally do it. The question is

Can you run a PostgreSQL server on your windows desktop/server box without having to install anything?

The answer is

windsting

为 UTF-8 编码的文本文件添加 BOM

应用场景

• 在 macOS 和 Windows 下同步 Cocos2D 项目

  Cocos2D 项目，在 macOS 下用 Xcode 编辑后，UTF-8 编码文件保存时不带 BOM，导致在 Windows 下用 Visual Studio 编译期报错，给这些文件添加 BOM 后，可以解决这些编译期错误，并且不会导致 Xcode 中编译有问题。

系统需求