ookangzheng

• Use curl to get the JSON response for the latest release
• Use grep to find the line containing file URL
• Use cut and tr to extract the URL
• Use wget to download it

curl -s https://api.github.com/repos/jgm/pandoc/releases/latest \
| grep "browser_download_url.*deb" \
| cut -d : -f 2,3 \
| tr -d \" \

ookangzheng

Introduction

This tutorial will help you transfer your folders / files between two server using rclone and ssh-agent.
It was tested between two Ubuntu 16.04 servers.

Installation

First things first. We need to install the neccessary packages:

apt-get update -y

ookangzheng

http://download.xs4all.nl/test/10GB.bin
http://ftp.iinet.net.au/test500MB.dat
http://lg-tor.fdcservers.net/10GBtest.zip
http://lg.ams2-c.fdcservers.net/10GBtest.zip
http://lg.chi2-c.fdcservers.net/10GBtest.zip
http://lg.den2-c.fdcservers.net/10GBtest.zip
http://lg.fra2-c.fdcservers.net/10GBtest.zip
http://lg.la2-c.fdcservers.net/10GBtest.zip
http://lg.lon-c.fdcservers.net/10GBtest.zip
http://lg.mad-c.fdcservers.net/10GBtest.zip

ookangzheng

About

• I faced bandwidth issues between a WG Peer and a WG server. Download bandwidth when downloading from WG Server to WG peer was reduced significantly and upload bandwidth was practically non existent.
• I found a few reddit posts that said that we need to choose the right MTU. So I wrote a script to find an optimal MTU.
• Ideally I would have liked to have run all possible MTU configurations for both WG Server and WG Peer but for simplicity I choose to fix the WG Server to the original 1420 MTU and tried all MTUs from 1280 to 1500 for the WG Peer.

Testing

• On WG server, I started an iperf3 server
• On WG peer, I wrote a script that does the following:
  • wg-quick down wg0
• Edit MTU in the /etc/wireguard/wg0.conf file

ookangzheng

# Configuration for Alacritty, the GPU enhanced terminal emulator.

# Import additional configuration files
#
# Imports are loaded in order, skipping all missing files, with the importing
# file being loaded last. If a field is already present in a previous import, it
# will be replaced.
#
# All imports must either be absolute paths starting with `/`, or paths relative
# to the user's home directory starting with `~/`.

ookangzheng

const { exec } = require('child_process')
const { promisify } = require('util')
const chalk = require('chalk')

// See: https://docs.npmjs.com/about-audit-reports#severity
const SEVERITY_LEVELS = ['low', 'moderate', 'high', 'critical']
const SEVERITY_THRESHOLD = 'critical'
const run = promisify(exec)

ookangzheng

#!/bin/bash

# Global variable declarations
format="json"
directories=() 
current_directory=`pwd`
report_directory="${current_directory}/report/"
fresh_report_directory="0"

# usage

ookangzheng

Setup Gitea on Raspberry Pi (3b+)

These instructions are based on this article: https://docs.gitea.io/en-us/install-from-source/.

Setup Raspberry Pi with minimal Raspbian image. You need to connect to the HDMI port and set the following:

Use Noobs to install Raspian.

Open menu Preferences > Raspberry Pi Settings

ookangzheng

# Command to download file via bittorrent magnet link using aria2.
# See website and documentation at https://aria2.github.io
# -d specifies the directory to store the downloaded file
# --seed-time=0 disables seeding after download has completed

aria2c -d ~/Downloads --seed-time=0 "magnet:?xt=urn:btih:248D0A1CD08284299DE78D5C1ED359BB46717D8C"

ookangzheng

Conventinal Commit Messages

See how a minor change to your commit message style can make a difference. Examples

Have a look at CLI util git-conventional-commits to ensure this conventions and generate changelogs

Commit Formats

Default