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Prune /var/lib/docker/overlay

sudo docker system prune -a -f

sudo docker rm -v $(sudo docker ps -a -q -f status=exited)
sudo docker rmi -f  $(sudo docker images -f "dangling=true" -q)
docker volume ls -qf dangling=true | xargs -r docker volume rm

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Delete all containers

$ docker ps -q -a | xargs docker rm

• -q prints only the container IDs
• -a prints all containers

Notice that it uses xargs to issue a remove container command for each container ID

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Table of Contents

• set -e, -u, -x, -o pipefail
• set -e
• set -x
• set -u
• set -o pipefail
• Setting IFS
• Original Reference

set -e, -u, -x, -o pipefail

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import mysql.connector
from mysql.connector import errorcode

config = {
    'user': 'root',
    'password': '',
    'host': 'localhost',
    'database': 'acme'
}

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Markdown Guide

Basic Markdown Formatting

Headings

# This is an <h1> tag

This is an tag

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@import url("https://fonts.googleapis.com/css?family=Roboto+Slab:100,300,400,700");
@import url("https://fonts.googleapis.com/css?family=Raleway:300,300i,400,400i,500,500i,600,600i,700,700i,800,800i,900,900i");

* {
  margin: 0;
  border: 0;
  box-sizing: border-box;
}

:root {

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const express = require('express');
const request = require('request-promise');

const PORT = process.env.PORT || 5000;
const app = express();

app.use(express.json());

const returnScraperApiUrl = (apiKey) => `http://api.scraperapi.com?api_key=${apiKey}&autoparse=true`;