prologic

Learn Go in ~5mins

This is inspired by A half-hour to learn Rust and Zig in 30 minutes.

Basics

Your first Go program as a classical "Hello World" is pretty simple:

First we create a workspace for our project:

m-radzikowski

#!/usr/bin/env bash

set -Eeuo pipefail
trap cleanup SIGINT SIGTERM ERR EXIT

script_dir=$(cd "$(dirname "${BASH_SOURCE[0]}")" &>/dev/null && pwd -P)

usage() {
  cat <<EOF
Usage: $(basename "${BASH_SOURCE[0]}") [-h] [-v] [-f] -p param_value arg1 [arg2...]

sourceperl

#!/usr/bin/env python3
from xml.dom import minidom
import requests

# some consts
HTTP_MULTI_STATUS = 207
PROPFIND_REQUEST = '''<?xml version="1.0" encoding="utf-8" ?>
<d:propfind xmlns:d="DAV:">
<d:prop xmlns:oc="http://owncloud.org/ns">
  <d:getlastmodified/>

Ashark

# Maintainer: Alex S. <shantanna_at_hotmail_dot_com>
# Contributor: Jonathon Fernyhough <jonathon_at_manjaro_dot_org>
# Contributor: Andrew Shark <ashark#linuxcomp.ru>

# Hardware support is limited.
# See https://forum.blackmagicdesign.com/viewtopic.php?f=21&t=56878&p=456990#p456924

pkgname=davinci-resolve
_pkgname=resolve
pkgver=15.2.3

geerlingguy

#!/usr/bin/env ansible-playbook -c local
#
# AWS STS token update playbook.
#
# Updating AWS session tokens with STS can be a pain. But MFA is good. So let's
# automate the management of the .aws/credentials file to make it not painful!
#
# Usage:
#
#  1. Save this to a file like /usr/local/bin/aws-sts-token

smellman

listen_addresses = '*'
# Tuning at: https://pgtune.leopard.in.ua/
# DB Version: 9.6
# OS Type: linux
# DB Type: dw
# Total Memory (RAM): 16 GB
# CPUs num: 20
# Connections num: 100
# Hard drive type: ssd

steven2358

FFmpeg cheat sheet

A list of useful commands for the FFmpeg command line tool.

Download FFmpeg: https://www.ffmpeg.org/download.html

Full documentation: https://www.ffmpeg.org/ffmpeg.html

Basic conversion

georgexsh

import sys

def j(lineno):
    frame = sys._getframe().f_back
    called_from = frame

    def hook(frame, event, arg):
        if event == 'line' and frame == called_from:
            try:
                frame.f_lineno = lineno

woowa-hsw0

#!/bin/bash

set -eu
umask 0022

if [[ $# -lt 1 ]]; then
    echo "Usage: $0 role_name [AWS ACCOUNT NUMBER]" >&2
    exit 1
fi

darahayes

KMS Encrypt and Decrypt Filters for Ansible

This Gist shows how you can encrypt/decrypt variables with KMS during your Ansible playbook execution. While google searching I couldn't find anything useful on the subject.

Let's say your project has a folder of playbooks called plays.

In that folder, create a folder called filter_plugins and insert kms_filters.py (included in this gist)