Jonas Gao JonasGao

Embedded Variables

The ngx_http_core_module module supports embedded variables with names matching the Apache Server variables. First of all, these are variables representing client request header fields, such as $http_user_agent, $http_cookie, and so on. Also there are other variables:

$arg_name
argument name in the request line

Enable #enable-devtools-experiments flag in chrome://flags section.
Open Chorme Devtools and check Settings > Experiments > Allow extensions to load custom stylesheets.

Create the following four files in a dedicated folder.

3.1. devtools.html

<html>
<head></head>
<body><script src="devtools.js"></script></body>

Use Proxy for Git/GitHub

Generally, the Git proxy configuration depends on the Git Server Protocol you use. And there're two common protocols: SSH and HTTP/HTTPS. Both require a proxy setup already. In the following, I assume a SOCKS5 proxy set up on localhost:1080. But it can also be a HTTP proxy. I'll talk about how to set up a SOCKS5 proxy later.

SSH Protocol

When you do git clone ssh://[user@]server/project.git or git clone [user@]server:project.git, you're using the SSH protocol. You need to configurate your SSH client to use a proxy. Add the following to your SSH config file, say ~/.ssh/config:

ProxyCommand nc -x localhost:1080 %h %p

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

Ctrl-Key: ^[
Octal: \033
Unicode: \u001b
Hexadecimal: \x1B
Decimal: 27

@developit/replaceall

~80b ponyfill for String.prototype.replaceAll() with good performance.

Why ponyfill? Because this is a proposal for a spec, and polyfilling it in-place before it gets solidified could break code that relies on an incorrect implementation.

Details

Alternate Version

There are several ways to clone a repository from github. Similar from other providers, such as bitbucket, gitlab, etc.

https://git-scm.com/book/en/v2/Git-on-the-Server-The-Protocols

Mostly, we use

http
ssh

Sample clone commands:

layout	post
title	How to Sync Microsoft OneDrive with Ubuntu 18.04 and 20.04 (64 bit)
tags	ubuntu-18.04, ubuntu-20.04
date	2020-04-23

There are many instructions to syncronize your files with OneDrive cloud-based storage in Linux. However they typically address multiple Linux distributions that often causes a confusion or an use of some commands which have not been actually tested before publishing. This instruction is for Ubuntu 18.04 and 20.04 (64 bit) only.

In order to install onedrive, first you need to install some dependencies and set up git.

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

	" status bar colors
	au InsertEnter * hi statusline guifg=black guibg=#d7afff ctermfg=black ctermbg=magenta
	au InsertLeave * hi statusline guifg=black guibg=#8fbfdc ctermfg=black ctermbg=cyan
	hi statusline guifg=black guibg=#8fbfdc ctermfg=black ctermbg=cyan

	" Status line
	" default: set statusline=%f\ %h%w%m%r\ %=%(%l,%c%V\ %=\ %P%)

	" Status Line Custom
	let g:currentmode={

	let mapleader=" "

	""" Plugins --------------------------------
	set surround
	set multiple-cursors
	set commentary
	set argtextobj
	set easymotion
	set textobj-entire
	set ReplaceWithRegister