Send a file from a given directory with :func:send_file. This
is a secure way to quickly expose static files from an upload folder or something similar.

from flask import Flask, request, send_from_directory

# set the project root directory as the static folder, you can set others.
app = Flask(__name__, static_url_path='')

@app.route('/js/<path:path>')
def send_js(path):
    return send_from_directory('js', path)

if __name__ == "__main__":
    app.run()

Things like this:

It brings useless word when we copy and paste the output.
To avoid this, we can use setTimeout with a console.log.bind:

setTimeout (console.log.bind (console, "This is a sentence."));

It's clean now!

Simply as

wget -i url.txt

url.txt is multple urls in each line. Like this:

https://ss3.bdstatic.com/70cFv8Sh_Q1YnxGkpoWK1HF6hhy/it/u=3302399998,3216746631&fm=26&gp=0.jpg
https://ss2.bdstatic.com/70cFvnSh_Q1YnxGkpoWK1HF6hhy/it/u=1588620919,359805583&fm=26&gp=0.jpg

BTW, it's very fast.

一次导入太多主题了，试了又用不上，想删了界面只提供单个删除。

还好装Xcode了，可以open ~/Library/Preferences/com.googlecode.iterm2.plist 用Xcode打开，定位到Custom Color Presets下面的主题名称上，长按住删除键即可很快删完。

const animals = [
  {sort: 'dog'},
  {sort: 'cat'},
  {sort: 'tiger'}
]

to get a random one animal:

let animal = animals[Math.floor(Math.random() * animals.length)];

git pull 时提示Authentication failed ，需要重置密码，执行这个即可

git config --system --unset credential.helper

ffmpeg运行时会默认带出一大段配置项输出，大多数时候没什么用处。

可以在ffmpeg运行时加上参数ffmpeg -hide_banner 如上图隐藏这些。

另外也可以加上参数-loglevel warning

参考 https://superuser.com/questions/326629/how-can-i-make-ffmpeg-be-quieter-less-verbose

SSE （ Server-sent Events ）是 WebSocket 的一种轻量代替方案，使用 HTTP 协议。

严格地说，HTTP 协议是没有办法做服务器推送的，但是当服务器向客户端声明接下来要发送流信息时，客户端就会保持连接打开，SSE 使用的就是这种原理。

是不是每次git pull时都要输入密码？就让它记住密码吧

git config --global credential.helper store