taoso

PostgreSQL is Enough

Background and Cron Jobs

Virtual Networking on Linux

In the Linux Kernel, support for networking hardware and the methods to interact with these devices is standardized by the socket API:

                +----------------+
                |   Socket API   |
                +-------+--------+
                        |
User space              |

ANSI Escape Sequences

Standard escape codes are prefixed with Escape:

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

Diagrams

Markdown Preview Enhanced supports rendering flow charts, sequence diagrams, mermaid, PlantUML, WaveDrom, GraphViz, Vega & Vega-lite, Ditaa diagrams. You can also render TikZ, Python Matplotlib, Plotly and all sorts of other graphs and diagrams by using Code Chunk.

Please note that some diagrams don't work well with file exports such as PDF, pandoc, etc.

Flow Charts

This feature is powered by flowchart.js.

Problem

Now tmux, mosh and iTerm2 support the OSC 52 sequence that enables clipboard sharing. However, there is a trap that prevents them from working together.

Mosh accepts OSC 52 sequences with the c; option. However, tmux doesn't send that option when it emits OSC 52 sequences, which means you cannot use tmux and mosh together with the default configuration.

Workaround

You can override the OSC 52 sequence generated by tmux by adding the following line to your tmux.conf.

Python udp broadcast client-server example

⚠️ ❗ ATTENTION ❗ ⚠️

This gist is deprecated and will not be edited in the future. Consider visit ninedraft/python-udp repo. It will not be deleted, however.

⚠️ ❗ ATTENTION ❗ ⚠️

ASUSWRT-MERLIN custom DDNS Script for Cloudflare

for Cloudflare as DDNS

using Cloudflare API v4

Using

put ddns-start at /jffs/scripts/, setting values and set DDNS type to Custom at web Admin panel.

Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!

openssl genrsa -des3 -out rootCA.key 4096

	package main

	import (
	"fmt"
	"reflect"
	"syscall"
	"unsafe"
	)

	func a() int {

	" 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={