olih

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq

steinwaywhw

• 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 \" \

kizbitz

#!/bin/bash

# Example for the Docker Hub V2 API
# Returns all images and tags associated with a Docker Hub organization account.
# Requires 'jq': https://stedolan.github.io/jq/

# set username, password, and organization
UNAME=""
UPASS=""
ORG=""

jlinoff

// License: MIT Open Source
// Copyright (c) Joe Linoff 2016
// Go code to prompt for password using only standard packages by utilizing syscall.ForkExec() and syscall.Wait4().
// Correctly resets terminal echo after ^C interrupts.
package main

import (
	"bufio"
	"fmt"
	"os"

cecilemuller

How to setup Let's Encrypt for Nginx on Ubuntu 18.04 (including IPv6, HTTP/2 and A+ SLL rating)

---

Virtual hosts

Let's say you want to host domains first.com and second.com.

Create folders for their files:

codekoala

#!/bin/bash -e

# Setup a Root CA in vault
# Generate and sign an Intermediate cert
#
# Requires:
# * A running vault server already initialzed and unsealed
# * Environment variable VAULT_TOKEN is set
# * vault cli (https://www.vaultproject.io)
# * httpie (https://github.com/jkbrzt/httpie)

gunjanpatel

Revert the full commit

Sometimes you may want to undo a whole commit with all changes. Instead of going through all the changes manually, you can simply tell git to revert a commit, which does not even have to be the last one. Reverting a commit means to create a new commit that undoes all changes that were made in the bad commit. Just like above, the bad commit remains there, but it no longer affects the the current master and any future commits on top of it.

git revert {commit_id}

About History Rewriting

Delete the last commit

Deleting the last commit is the easiest case. Let's say we have a remote origin with branch master that currently points to commit dd61ab32. We want to remove the top commit. Translated to git terminology, we want to force the master branch of the origin remote repository to the parent of dd61ab32:

dogrocker

Oh my zsh.

Install with curl

sh -c "$(curl -fsSL https://raw.githubusercontent.com/robbyrussell/oh-my-zsh/master/tools/install.sh)"

Enabling Plugins (zsh-autosuggestions & zsh-syntax-highlighting)

• Download zsh-autosuggestions by

pandafulmanda

Python3 Virtualenv Setup

Requirements

• Python 3
• Pip 3

$ brew install python3

g0t4

Link to these links: https://git.io/vKSVZ

Module 1:

• Run jenkins from war file: jenkins -jar jenkins.war
• Run jenkins from docker:

docker run -d \
           --restart unless-stopped \
           --name jenkins \