Hydra zh4n7wm

neovim

install

brew install neovim

config

下面介绍 podman、podman-compose 安装及使用。

文中只列出了 Ubuntu 20.04 系统的安装过程。

安装

How to Install and Use Podman on Ubuntu 20.04

设置源

If you created your key pair using AWS, you can use the OpenSSL tools to generate a fingerprint as follows:

$ openssl pkcs8 -in path_to_private_key -inform PEM -outform DER -topk8 -nocrypt | openssl sha1 -c

If you created a key pair using a third-party tool and uploaded the public key to AWS, you can use the OpenSSL tools to generate the fingerprint as follows:

$ openssl rsa -in path_to_private_key -pubout -outform DER | openssl md5 -c

wireless

install wpa_supplicant and dhcpcd

sudo pacman -S wpa_supplicant dhcpcd

get wireless network interface

NGINX to reverse proxy websockets

主要看 location 中的，注意：

proxy_read_timeout，默认是 60s，如果不设置长一点，会看到 websocket server 收到大量请求；然后从浏览器看，前端每分钟都在创建新的 websocket 连接；详见：http://nginx.org/en/docs/http/websocket.html
如果用 uvicorn，nginx 不能开启 keepalive ，否则 websocket server 会报 WARNING: Invalid HTTP request received.

map $http_upgrade $connection_upgrade {
    default upgrade;

extend virtualbox disk

shutdown guest OS

show disk info

VBoxManage showhdinfo ~/VirtualBox\ VMs/Ubuntu/Ubuntu.vdi

documents

create key group

generate key pair

crop image

import os

from PIL import Image


def crop_image(filename, w_h_ratio=0.75):
 img = Image.open(filename)

	// remove duplicate files
	// if file content with same sha256, they are same
	// usage: go run remove-duplicate-files.go <your-directory> [your-dir1 you-dir2 ...]
	// run with `-dryrun` if you just want to find the duplicate files
	package main

	import (
	"crypto/sha256"
	"flag"
	"fmt"

	#!/bin/sh
	# Last Change: 2011/10/06
	# apt-fast v0.02 by Matt Parnell http://www.mattparnell.com, this thing is fully open-source
	# if you do anything cool with it, let me know so I can publish or host it for you
	# contact me at [email protected]
	# Special thanks to Travis/travisn000 from the PCLinux Forums for making improvements that allow
	# for more complex apt-get commands. See the thread: http://www.pclinuxos.com/forum/index.php/topic,66385.0.html
	# adicionar suporte aos metalinks no aria2: http://ubuntuforums.org/showthread.php?t=1493421
	# veja também apt-metalink: http://github.com/tatsuhiro-t/apt-metalink